Securities Regulation

U.S. securities regulation is built on two foundational statutes enacted after the 1929 market crash: the Securities Act of 1933 and the Securities Exchange Act of 1934. The '33 Act requires registration of new securities offerings with the SEC and mandates full disclosure to investors before they buy — the "full and fair disclosure" philosophy that governs the entire framework. The '34 Act established the Securities and Exchange Commission (SEC) itself, created ongoing disclosure requirements for public companies (10-Ks, 10-Qs, 8-Ks), and prohibits fraud and manipulation in securities markets. The system doesn't judge whether an investment is a good one — the SEC doesn't approve or disapprove investments for merit — only whether investors have been given material facts to make their own decisions. Today the SEC oversees approximately 6,000 public companies, broker-dealers, investment advisers, and exchanges, with enforcement tools including civil injunctions, fines, disgorgement of profits, and criminal referrals. Securities offering exemptions — Regulation D (private placements), Regulation A+ (mini-IPOs up to $75 million), and Regulation Crowdfunding (up to $5 million) — provide pathways for raising capital from investors without a full registered public offering.

Current Law (2026)

Legal Authority

• 15 U.S.C. § 77a — Securities Act of 1933 (short title)
• 15 U.S.C. § 77b — Definitions (security, issuer, person, sale, underwriter, accredited investor)
• 15 U.S.C. § 77c — Exempt securities (government securities, bank securities, insurance, short-term commercial paper)
• 15 U.S.C. § 77d — Exempt transactions (secondary sales, private offerings, small offerings)
• 15 U.S.C. § 77d-1 — Crowdfunding requirements (intermediary registration, disclosure, investment limits)
• 15 U.S.C. § 77e — Registration requirement (illegal to sell or offer unregistered securities through interstate commerce)
• 15 U.S.C. § 77f — Registration statements (filing requirements, signature, fees)
• 15 U.S.C. § 77g — Required information (Schedule A for domestic securities, Schedule B for foreign)
• 15 U.S.C. § 77h — Effective date (20 days after filing unless SEC accelerates or issues stop order)
• 15 U.S.C. § 77j — Prospectus requirements (must contain registration statement information)
• 15 U.S.C. § 77k — Civil liability for false registration statements (buyer can sue all signers, directors, underwriters, experts)
• 15 U.S.C. § 77h-1 — Cease-and-desist proceedings (SEC administrative enforcement)

Implementing Regulations (17 CFR — SEC)

• 17 CFR Part 229 (Regulation S-K) — Standard instructions for filing forms: non-financial disclosure requirements for registration statements and periodic reports — business description, risk factors, management discussion, executive compensation, related party transactions

• 17 CFR Part 230 (Regulation D) — Rules governing limited offer and sale exemptions: Rule 504 (offerings up to $10M), Rule 506(b) (unlimited private placement to accredited investors + up to 35 sophisticated non-accredited), Rule 506(c) (general solicitation with accredited investor verification)

• 17 CFR Part 227 (Regulation Crowdfunding) — Rules for crowdfunding offerings up to $5M: investor limits based on income/net worth, Form C filing, intermediary requirements, ongoing reporting

• 17 CFR Part 230, Rules 251-263 (Regulation A+) — Mini-IPO framework: Tier 1 (up to $20M/year, state registration required) and Tier 2 (up to $75M/year, state preempted, ongoing reporting)

• 17 CFR Part 240 (General Rules and Regulations, Securities Exchange Act of 1934) — The core SEC Exchange Act rulemaking (554 sections) — every ongoing obligation of public companies, broker-dealers, and market participants flows through here. Key rule families:

  • Rule 10b-5 — Anti-fraud: the foundational securities fraud rule — unlawful to employ any device, scheme, or artifice to defraud, make untrue statements or omit material facts, or engage in acts that operate as a fraud in connection with the purchase or sale of any security; basis for most SEC enforcement actions and private civil suits
  • Rules 10b5-1 and 10b5-2 — Insider trading standards: 10b5-1 defines trading "on the basis of" material nonpublic information (awareness standard — if you know it, you're on notice) and governs pre-planned trading programs (10b5-1 plans) that provide an affirmative defense when adopted in good faith without MNPI; 10b5-2 establishes duties of trust or confidence for misappropriation cases (family relationships, express confidentiality agreements, and history of sharing confidences)
  • Rule 10b-18 — Issuer repurchase safe harbor: conditions under which a company buying back its own stock won't be deemed to have manipulated the price — single daily broker, timing restrictions (last 30 minutes of regular session), volume limits (25% of average daily trading volume), and price limits (at or below the prevailing market price)
  • Rules 10A-1/2/3 — Auditor independence and audit committee governance: auditors must report illegal acts to audit committee; audit committees must have financial literacy and independence requirements; listing standards must require independent audit committees with authority to hire and oversee auditors — post-Sarbanes-Oxley reforms
  • Rules 10C-1, 10D-1 — Compensation committee standards and executive clawback: 10C-1 requires listing standards for independent compensation committees; 10D-1 (the Dodd-Frank "clawback rule" effective 2023) requires listed companies to recover incentive-based executive compensation paid in error based on financial results that were later restated — applies to current and former executive officers for 3 years
  • Rules 12b-2 and 12g — Definitions and registration thresholds: 12b-2 defines key terms (affiliate, significant subsidiary, public float, fiscal year); 12g-1 sets the threshold triggering required Exchange Act registration — companies with a class of equity securities held by 2,000+ persons (or 500+ non-accredited investors) and $10M+ in total assets must register, triggering ongoing periodic reporting obligations
  • Rules 13a and 15d — Periodic and current reports: 13a-1 (annual 10-K), 13a-13 (quarterly 10-Q), 13a-11 (current 8-K for material events), 13a-14 (CEO/CFO certifications under Sarbanes-Oxley §302) — the disclosure backbone for public companies; Rule 15d imposes the same reporting obligations on issuers who filed registration statements under the Securities Act but whose securities aren't exchange-listed
  • Rules 13d and 13g — Beneficial ownership reporting: any person or group acquiring 5% or more of a registered equity class must file Schedule 13D within 10 days (long form — discloses purpose and plans) or Schedule 13G (short form for passive investors); amendments required on any material change; hedge funds and activists use these filings to signal hostile intent, driving significant market reaction
  • Rules 14a (proxy) and 14c — Proxy solicitation rules: 14a-2 (exemptions), 14a-3 (delivery of proxy materials), 14a-8 (shareholder proposals — 300-word limit, company can exclude on specified grounds), 14a-9 (anti-fraud for proxy statements), 14a-16 (internet delivery "notice and access" — companies may post proxy materials online instead of mailing); 14a-101 (Schedule 14A format for proxy statements including executive compensation "say-on-pay" disclosures, director independence, audit committee report)
  • Rules 14d and 14e — Tender offer rules: 14d-1 governs commencement of cash tender offers (20 business day minimum offer period); 14e-1/2 prohibit fraudulent tender offer practices and require target board to respond within 10 business days; 14e-3 prohibits trading on material nonpublic information about a pending tender offer (stricter than general 10b-5 — no tipper-tippee relationship required)
  • Rules 15c3-1 and 15c3-3 — Broker-dealer financial requirements: 15c3-1 (net capital rule) requires broker-dealers to maintain liquid capital above a minimum based on their business — the "haircut" approach deducts a percentage of each securities position's value based on its risk profile; 15c3-3 (customer protection rule) requires broker-dealers to segregate customer fully paid securities and maintain a reserve account equal to the net amount owed to customers — prevents firms from using customer assets to fund proprietary positions (designed after the 1970 brokerage failures)
  • Rules 16a and 16b — Insider reporting and short-swing profits: Section 16 officers, directors, and 10%+ shareholders must report transactions within 2 business days (Form 4, filed electronically with SEC); short-swing profits — any profit from matching buy/sell transactions within 6 months — are recoverable by the issuer regardless of intent; Form 3 (initial report) and Form 5 (annual catch-all) complete the reporting scheme
  • Rules 17a-3 and 17a-4 — Broker-dealer recordkeeping: 17a-3 specifies records that broker-dealers must create (blotters, ledgers, confirmations, customer account records); 17a-4 specifies retention requirements — most records must be kept 6 years, with the first 2 years in an accessible location; electronic storage is permitted with WORM (write once, read many) requirements and independent third-party access

• 17 CFR Part 242 (Regulation NMS) — National market system: order protection rule (trade-through prohibition), access rule, minimum pricing increments, market data governance — the framework governing equity market structure

• 17 CFR Part 246 (Regulation RR — Credit Risk Retention) — The Dodd-Frank Act's "skin in the game" rule for asset-backed securitization (22 sections — jointly issued by the SEC, Federal Reserve, FDIC, OCC, FHFA, and CFPB; implements Section 941 of Dodd-Frank's mandate that securitizers retain credit risk). Key provisions:

  • § 246.3 — Base requirement: a sponsor of a securitization transaction (or majority-owned affiliate) must retain an economic interest in at least 5% of the credit risk of the securitized assets; the retained interest cannot be sold, transferred, or hedged during the required retention period — the rule is designed to ensure that the party originating and packaging ABS has ongoing financial exposure to the credit quality of the underlying loans
  • § 246.4 — Standard retention forms: the sponsor may satisfy the 5% requirement by retaining an eligible vertical interest (a proportional slice of each class of ABS issued — 5% of every tranche, senior and subordinate alike), an eligible horizontal residual interest (a first-loss position equal to at least 5% of the fair value of all ABS interests — the equity tranche), or any combination; the vertical approach provides the same credit exposure as all investors; the horizontal approach concentrates the sponsor's exposure in the most junior, first-loss position
  • § 246.5 — Revolving pool securitizations (credit card ABS, dealer floorplan ABS): the sponsor retains a seller's interest equal to 5% of the pool balance; the seller's interest fluctuates as the pool turns over — the sponsor's share of a revolving securitization trust (where new assets continuously replace maturing ones) must be maintained at the 5% level
  • § 246.7 — Commercial mortgage-backed securities (CMBS): an alternative structure for CMBS where a third-party purchaser (the "B-piece buyer") buys the most subordinated 5%+ of the deal at arm's length and retains it without hedging; the B-piece buyer must conduct independent due diligence on each loan in the pool and agree to hold the risk position — this structure recognizes that commercial real estate has specialist investors with the expertise to perform the first-loss role
  • § 246.9 — Open market CLOs: collateralized loan obligations assembled by a manager who selects loans on the open market (rather than originating them) satisfy the rule if the CLO manager retains 5% of each class or the equivalent horizontal interest; the rule was initially interpreted to apply to CLO managers who were not loan originators, creating litigation (the DC Circuit struck down the application to CLO managers in Loan Syndications and Trading Assoc. v. SEC, 2018); the final rule was amended to clarify that open-market CLO managers must retain the interest
  • § 246.12 — Hedging and transfer prohibition: sponsors may not sell or transfer the retained interest (except to majority-owned affiliates) or enter into any credit derivative or other hedging transaction that reduces or limits the sponsor's financial exposure to the retained interest during the retention period; this prohibition is the enforcement mechanism of the rule — without it, sponsors could formally retain the interest while economically eliminating their exposure
  • § 246.13 — QRM exemption: securitizations composed entirely of Qualified Residential Mortgages (QRM) — defined identically to the CFPB's "Qualified Mortgage" standard under Regulation Z — are exempt from the 5% retention requirement; the QRM exemption reflects a congressional judgment that well-underwritten residential mortgages meeting ability-to-pay standards do not need the additional safeguard of sponsor retention
  • § 246.15 — Commercial loan and CRE exemption: qualifying commercial loans, qualifying commercial real estate loans, and qualifying automobile loans meeting conservative underwriting standards specified in §§ 246.16–246.18 are subject to a 0% retention requirement

  Regulation RR applies to the US ABS market — roughly $2–3 trillion in new issuance annually across mortgage-backed securities, CLOs, auto ABS, credit card ABS, and CMBS. The rule transformed the capital structure of securitization: sponsors must now capitalize the retained interest at regulatory capital levels (for bank sponsors), which increased the cost of securitization and reduced the relative economics of originate-to-distribute models that were central to the pre-2008 crisis. The QRM/QM safe harbor has shaped residential mortgage underwriting: originating conforming loans that fit the QM definition allows bank originators to sell them into agency MBS (Fannie/Freddie) without any retention obligation, while non-QM jumbo and non-agency mortgages trigger the 5% requirement.

• 17 CFR Part 243 (Regulation FD — Fair Disclosure) — the SEC rule that closed the era of selective earnings guidance: when a public company intentionally discloses material nonpublic information to a securities professional (broker-dealer, investment adviser, institutional investment manager, holder of 5%+ of any class of equity), the company must simultaneously make public disclosure by filing a Form 8-K or using another broadly disseminated method; for non-intentional leaks, the company must disclose publicly within 24 hours or before the start of the next trading day (whichever comes later). Key provisions:

  • § 243.100 — Core rule: applies to the "issuer" (any Exchange Act-registered public company, including closed-end funds) and "any person acting on its behalf" — senior officials and investor relations staff; the trigger is disclosure to a market professional or security holder, not to the general public; exclusions include disclosures to persons who owe a duty of trust or confidence (lawyers, accountants, investment bankers working for the company) and communications made in ordinary course to customers, vendors, or journalists
  • § 243.101 — Definitions: "intentional" means the disclosing person knew or was reckless in not knowing that the information was both material and nonpublic — thus a well-intentioned earnings call comment that inadvertently reveals material data still requires prompt remediation disclosure; "public disclosure" means filing a Form 8-K with the SEC or disseminating information through a method reasonably designed to achieve broad, non-exclusionary public distribution (including social media channels announced in advance as official disclosure channels — SEC guidance post-SEC v. Netflix, 2013)
  • § 243.102 — No Rule 10b-5 liability: a failure to make a Reg FD-required public disclosure is not itself a violation of Rule 10b-5 anti-fraud rules — Reg FD creates its own enforcement basis (civil penalties, injunctions) but does not convert selective disclosure into securities fraud per se; however, if the selective disclosure was intentional and trading occurred on the leaked information, separate insider trading liability may attach
  • § 243.103 — No effect on reporting status: a Reg FD violation does not affect a company's "current filer" or "well-known seasoned issuer" (WKSI) status for purposes of shelf registration — preserving the company's capital markets access even while the SEC investigates the disclosure violation

  Regulation FD (enacted in 2000 at 65 FR 51738) fundamentally changed how public companies communicate with Wall Street analysts. Before Reg FD, the practice of "selective disclosure" — briefing favored analysts on earnings outlook before public announcements — gave those analysts' clients a trading advantage that retail investors lacked. The rule forced companies to communicate through broadly accessible earnings calls (now routinely webcast to all investors simultaneously), press releases, and Form 8-K filings. The result: the analyst community lost its informational edge, earnings surprise volatility increased as a broader set of investors had access to the same information simultaneously, and the investor relations function transformed from a relationship-management role to a compliance-heavy public communications operation. No major amendments: Reg FD has remained unchanged since 2000; the SEC has issued guidance letters addressing social media disclosure (2013) and COVID-era communication practices but has not reopened the rulemaking.

• 17 CFR Part 244 (Regulation G — Non-GAAP Financial Measures) — the SEC rule requiring public companies that disclose non-GAAP (generally accepted accounting principles) financial measures to accompany those disclosures with the most directly comparable GAAP measure and a reconciliation showing how the non-GAAP figure relates to the GAAP figure. Adopted in 2003 under Sarbanes-Oxley § 401(b) (15 U.S.C. § 7261). Key provisions:

  • § 244.100 — Core disclosure rule: whenever a registrant publicly discloses material information that includes a non-GAAP financial measure (adjusted EBITDA, free cash flow, non-GAAP EPS, core revenue, etc.), the disclosure must also include: (a) the most directly comparable GAAP financial measure; and (b) a reconciliation of the non-GAAP measure to the comparable GAAP measure, by schedule or other clearly understandable method; the requirement applies to all forms of public disclosure — press releases, earnings calls, investor presentations, websites, SEC filings, and interviews
  • § 244.101 — Definitions: a "non-GAAP financial measure" is any numerical measure of an issuer's historical or future financial performance, financial position, or cash flow that includes or excludes amounts that are included or excluded in the comparable GAAP measure; excluded from the definition are operating measures that do not purport to measure financial performance (store count, subscriber count), non-financial statistical operating measures, and measures calculated per-share under GAAP; "registrant" includes domestic public companies and foreign private issuers using GAAP-based financial statements
  • § 244.102 — No safe harbor from anti-fraud: compliance with Regulation G's reconciliation requirements does not shield a company from liability under Rule 10b-5 or other anti-fraud provisions if the non-GAAP measure is presented in a misleading way — reconciliation is necessary but not sufficient for a non-misleading disclosure

  Regulation G addresses the widespread corporate practice of emphasizing non-GAAP metrics in investor communications while de-emphasizing GAAP results. Companies frequently report "adjusted EBITDA," "core EPS," or "non-GAAP operating income" that exclude stock-based compensation, restructuring charges, acquisition costs, and other items — sometimes making reported performance look substantially better than GAAP results. Regulation G's reconciliation requirement ensures investors can evaluate what was excluded and why. The SEC has issued guidance (C&DIs) interpreting how the rule applies to specific non-GAAP adjustments, and SEC Regulation S-K Item 10(e) extends similar requirements to non-GAAP measures in SEC filings. Recent enforcement: the SEC has increasingly pursued enforcement actions against companies that characterize recurring charges as "non-recurring" in non-GAAP adjustments, or present non-GAAP measures more prominently than GAAP equivalents in formal filings.

Implementing Regulations (12 CFR — Federal Reserve Board)

• 12 CFR Part 220 (Regulation T) — Credit by Brokers and Dealers: the Federal Reserve's margin lending rule governing credit extended by broker-dealers to their customers for purchasing or carrying securities — as distinct from Regulation U (which governs banks and non-broker lenders) and Regulation X (which governs borrowers). Regulation T has governed securities credit at broker-dealers since the Securities Exchange Act of 1934 authorized the Federal Reserve to set margin requirements:

  • § 220.4 — Margin account: the central account type under Regulation T; a broker-dealer may extend credit to a customer in a margin account to purchase margin securities (exchange-listed equities, Nasdaq stocks, and debt convertible into margin stock); the initial margin requirement is 50% of the current market value of the purchased securities — meaning a customer buying $100,000 of stock must deposit at least $50,000 in cash or acceptable securities; the broker-dealer finances the remaining 50% as a margin loan; FINRA and exchange maintenance margin rules (typically 25-30%) govern ongoing collateral requirements after the initial purchase
  • § 220.5 — Special cash account: the most restrictive account type; in a special cash account, the customer must pay for securities in full within normal settlement time (T+1 for equities since May 2024); no credit extension is permitted; if a customer sells securities before paying for them (a "freeriding" violation), the account must be frozen for 90 days, requiring full prepayment for all subsequent purchases; the 90-day restriction is the enforcement mechanism for the cash account's no-credit rule
  • § 220.6 — Special memorandum account (SMA): a bookkeeping device that records excess equity in a margin account; when market appreciation increases the value of securities above the required margin level, the excess is credited to the SMA and can be used to purchase additional securities without a new cash deposit; SMA balances can also be withdrawn as cash (subject to the maintenance margin requirement remaining satisfied); the SMA mechanism is how margin accounts generate purchasing power from portfolio appreciation
  • § 220.10 — Borrowing and lending securities: a broker-dealer borrowing securities to make delivery (for example, to cover a short sale) must comply with Regulation T's requirements for the collateral pledged against the borrowed securities; the rule ensures that securities lending activities don't circumvent the margin requirements applicable to the underlying long positions
  • § 220.12 — Regulation T exemptions: U.S. government securities, municipal securities, and certain other debt instruments are exempt from Regulation T's margin requirements and may be purchased in special cash accounts without the 50% initial margin constraint; the exemptions reflect that these instruments carry lower volatility and credit risk than equity securities

  Under Regulation T, the 50% initial margin requirement has been unchanged since 1974. FINRA and exchange rules impose maintenance margin requirements (typically 25% of current market value for long positions, 30% for short positions) that trigger margin calls when portfolio values decline — but these maintenance rules are exchange/FINRA rules, not the Federal Reserve's Regulation T. The interplay between Regulation T (initial margin at purchase), FINRA Rule 4210 (ongoing maintenance margin), and customer margin agreements determines when margin calls occur and what happens if a customer fails to meet a call (liquidation of securities at the broker's discretion). Portfolio margin — available to sophisticated customers with large diversified portfolios — uses risk-based methodology rather than the flat 50% Reg T requirement, subject to FINRA approval and minimum equity thresholds.

• 12 CFR Part 221 (Regulation U) — Credit by Banks and Persons Other Than Brokers or Dealers for the Purpose of Purchasing or Carrying Margin Stock: the Federal Reserve's margin lending rule governing credit extended by banks and non-broker lenders (as opposed to Regulation T, which governs broker-dealer credit, and Regulation X, which governs borrowers). Together, Regulations T, U, and X form the margin credit framework that has operated since the Securities Exchange Act of 1934 authorized the Federal Reserve to regulate credit extended for securities purchases:

  • § 221.1 — Authority and purpose: the rule implements Section 7 of the Securities Exchange Act of 1934 (15 U.S.C. § 78g), which authorizes the Federal Reserve to set margin requirements on securities credit; Regulation U applies to banks (state-chartered member banks, national banks through OCC, savings associations through OTS) and to any person (non-bank lenders, hedge funds, private equity) who regularly extends credit secured by margin stock for the purpose of buying or carrying margin stock; the rule does not apply to broker-dealers, who are separately regulated under Regulation T
  • § 221.101 — Determining the purpose of a loan: the central analytical task under Reg U is determining whether a loan is "purpose credit" — credit extended for the purpose of purchasing or carrying margin stock; a lender must determine the purpose at origination using the borrower's statement; if a loan is secured by margin stock (even collaterally), and the proceeds are used to buy more margin stock, it is purpose credit and maximum loan value rules apply; Form FR U-1 is the purpose statement that borrowers must complete for margin stock-secured loans above the threshold
  • § 221.102 — Committed credit: a bank or lender that makes a commitment to extend credit must apply the margin requirements as of the commitment date, not the drawdown date; this prevents circumventing margin rules by committing to lend at favorable margin ratios and drawing down later after market conditions change
  • § 221.103 — Loans to brokers and dealers: a Reg U lender may extend credit to a broker-dealer; such credit is subject to Reg U's margin requirements unless the broker-dealer certifies that the proceeds will not be used to purchase or carry margin stock — the broker-dealer's own Reg T obligations govern how it uses credit in its own margin accounts
  • § 221.106 — Good faith reliance: a Reg U lender that relies in good faith on a borrower's FR U-1 purpose statement is not liable for violations if the borrower misrepresents the loan's purpose; however, reliance on a clearly false or implausible statement does not constitute good faith — lenders must exercise reasonable diligence when stated purposes are inconsistent with the surrounding facts

  Under Regulation U, banks may lend up to 50% of the current market value of margin stock pledged as collateral for purpose credit — the same initial margin requirement as Regulation T. "Margin stock" includes exchange-listed or Nasdaq-traded equity securities, debt convertible into margin stock, and warrants. Non-purpose credit secured by margin stock is not subject to the 50% cap — a distinction that is the focus of significant loan structuring attention in leveraged buyouts, securities-backed lending programs, and portfolio margining arrangements at banks. The Federal Reserve updates the list of margin stocks (OTC margin stock) quarterly. No major amendments since 1998 (63 FR 2818) — the framework has remained stable as Regulation T and market practice have evolved.

Implementing Regulations (17 CFR — CFTC)

• 17 CFR Part 41 — Security Futures Products (CFTC, 27 sections across 6 subparts — the CFTC's implementing regulations for security futures products (SFPs) — futures contracts on individual stocks and narrow-based stock indexes; authority: 7 U.S.C. § 7a-2 (Commodity Exchange Act § 5f); Part 41 was created by the Commodity Futures Modernization Act of 2000 (CFMA), which ended the prior 18-year ban on single-stock futures trading and established a unique joint CFTC/SEC regulatory jurisdiction over security futures as both commodity futures and securities):

  • Subpart B — Narrow-Based Security Index Definitions (§§ 41.11–41.16): the boundary between "security futures" (CFTC/SEC joint jurisdiction) and "broad-based index futures" (CFTC-only jurisdiction) turns on whether an index is "narrow-based" — a statutory term the CFMA defined by reference to the number of component securities, market capitalization concentration, and trading volume. Key provisions:
    • § 41.11 — Market capitalization and ADTV methodology: an index is narrow-based (and thus subject to joint jurisdiction) if it has 9 or fewer component securities; or if any single component accounts for more than 30% of the index's weighting; or if the five highest-weighted components together account for more than 60% of the index's weighting; or if any component security has a 30-day average daily trading volume (ADTV) of less than $50 million; the ADTV threshold ensures the underlying securities have sufficient market depth to support cash settlement without manipulation risk
    • § 41.12 — Indexes trading fewer than 30 days: a new index that has been trading less than 30 days cannot yet establish a track record for ADTV; during the first 30 days, the narrow-based determination is made based on the characteristics of the component securities at the time of listing; this prevents gaming the system by briefly listing an index under broad-based rules before establishing ADTV history
    • §§ 41.13–41.16 — Transition periods: indexes that cross the narrow/broad threshold due to changes in component securities' ADTV or weighting may receive a transition period (typically 3 months) during which contracts already listed may continue trading while the exchange redesigns the product; the transition provisions prevent sudden delisting of existing positions when index characteristics shift
  • Subpart C — Listing Requirements (§§ 41.21–41.25): security futures on individual equities and narrow-based indexes may only be listed on designated contract markets (DCMs) or foreign boards of trade that comply with specific requirements beyond those applicable to ordinary commodity futures:
    • § 41.21 — Underlying security registration: the underlying security of a security futures product must be a security registered under §12 of the Securities Exchange Act of 1934 or an exempted security (e.g., government securities); this requirement ensures that the equity underlying a single-stock future is subject to SEC reporting obligations — investors in the security futures can access the same financial disclosure, material event reporting, and earnings information that governs the equity market
    • § 41.22 — Required certifications: when listing a new security futures product, the DCM must certify to the CFTC that the product complies with Part 41 requirements; the certification must confirm that the underlying security is registered, that the contract specifications comply with applicable position limit rules, and that the listing does not violate any self-regulatory organization rules applicable to the underlying equity market
    • § 41.23 — Listing procedures: the DCM may list new security futures by self-certification (self-certification to the CFTC that the product meets all requirements) rather than seeking prior approval; CFTC has 10 days to review self-certified products before trading may commence; the expedited 10-day window balances regulatory oversight with the need to list products in response to market demand quickly
  • Subpart D — Notice-Designated Contract Markets (§§ 41.41–41.44): the CFMA created a special market type — notice-designated contract markets (NDCMs) — that could register with the CFTC on an expedited basis to trade security futures; NDCMs were available to foreign boards of trade (FBOTs) and new entrants who met streamlined requirements; the NDCM category was a transitional mechanism to encourage early market entry after the 2000 Act; as of 2026, the major security futures trading has consolidated on OneChicago (since closed in 2020) and to a lesser extent on CME Group platforms
  • Subpart E — Customer Accounts and Margin Requirements (§§ 41.41–41.46): security futures carry 25% initial margin requirements — higher than the 20% minimum for broad-based equity index futures but lower than the 50% Regulation T margin for purchasing the underlying equities directly; the 25% margin floor reflects the SEC's insistence that security futures margin be sufficient to protect against the concentrated risk of single-stock price volatility, while the CFTC's futures margin framework (which uses mark-to-market daily settlement) provides different risk management properties than the Regulation T loan collateral model; customer accounts holding security futures must be segregated from house accounts under CEA segregation requirements

  Security futures were created by the CFMA to give investors a leveraged, futures-market alternative to owning or shorting individual stocks — with the daily mark-to-market, cash settlement, and exchange-traded transparency of futures combined with exposure to individual equity price movements. The product never achieved the trading volumes Congress anticipated, partly due to tax treatment issues (security futures gains are treated as ordinary income rather than lower capital gains rates), partly due to the margin advantage of equity options (which require no upfront margin for long positions), and partly due to broker complexity in explaining the dual-regulatory product to retail customers. Most recent rulemaking: 77 FR 66344 (November 2012) — CFTC and SEC jointly amended the product definitions, listing requirements, and margin rules to conform to market evolution since the 2000 Act. The Part 41 framework has remained essentially unchanged since 2012.

How It Works

Federal securities regulation is built on a simple principle: investors are entitled to know material facts about the securities they buy. The Securities Act of 1933 governs the initial offering of securities; the Securities Exchange Act of 1934 governs ongoing trading in secondary markets. Together they form the framework that makes U.S. capital markets the deepest and most trusted in the world.

Any company offering securities to the public must file a registration statement with the SEC containing detailed information about its business, financial condition, management, risk factors, and the terms of the offering. The registration statement becomes public on EDGAR; the prospectus derived from it must be delivered to every purchaser. The theory is that sunlight is the best disinfectant — if investors have accurate information, the market will price securities fairly. Not every offering needs full registration: Regulation D allows private placements to accredited investors without registration (though anti-fraud rules still apply); Regulation A+ allows companies to raise up to $75 million with simplified disclosure (sometimes called a "mini-IPO"); Regulation Crowdfunding allows small companies to raise up to $5 million from the general public through registered intermediaries. These exemptions balance investor protection against the need for smaller companies to access capital without prohibitive compliance costs. Dodd-Frank further expanded SEC authority over derivatives, whistleblower programs, and systemically important firms.

Section 11 of the Securities Act creates strict liability for material misstatements or omissions in a registration statement — the buyer doesn't need to prove intent to deceive. Directors, officers who signed the filing, underwriters, and accountants who certified financials can all be liable; the only defense is "due diligence," proving a reasonable investigation and no reason to believe the statement was misleading. The Investment Company Act of 1940 separately regulates mutual funds, ETFs, and other pooled vehicles, while the Investment Advisers Act of 1940 regulates firms that advise investors for compensation — both impose fiduciary obligations and disclosure requirements beyond those in the basic securities acts. For enforcement, the SEC can bring administrative proceedings (cease-and-desist orders, suspensions), civil suits in federal court (injunctions, disgorgement, civil penalties), and refer cases for criminal prosecution by DOJ. Private plaintiffs can also sue under Section 11 for false registration statements and under Section 10(b)/Rule 10b-5 for securities fraud in trading — making the securities laws enforced from both directions simultaneously.

How It Affects You

If you're an investor in public stocks, bonds, or funds: Federal securities law is what makes the research you do before investing meaningful. Every publicly traded company must file annual 10-K reports, quarterly 10-Q reports, and proxy statements with the SEC — all publicly available for free at SEC EDGAR (sec.gov/edgar). Before buying any public company stock, spend 20 minutes on EDGAR: the 10-K tells you the actual financial condition (not the press release version), who the executives are and what they're paid, what risks the company itself discloses, and what legal proceedings are pending. If you lose money because a company made materially false statements in its public filings, you may have a private right of action under Section 10(b) of the Exchange Act and Rule 10b-5 — class action securities fraud cases are common, and class members don't need to hire a lawyer individually. If your broker churned your account, recommended unsuitable investments, or stole from you, file a complaint with FINRA at finra.org/investors/have-problem and the SEC at sec.gov/tcr. The SEC Whistleblower Program (sec.gov/whistleblower) pays 10-30% of sanctions over $1 million to individuals who provide original information about securities violations.

If you're a startup founder raising your first round: You cannot sell equity or convertible notes to investors without either registering with the SEC (expensive, slow, and inappropriate for startups) or qualifying for a securities exemption. The most common startup exemptions: Regulation D Rule 506(b) allows unlimited raises from up to 35 non-accredited sophisticated investors and unlimited accredited investors, with no general solicitation — the foundation of traditional VC and angel investing. Rule 506(c) allows general solicitation (advertising your raise publicly) but requires verifying that all investors are accredited. Regulation Crowdfunding (Reg CF) allows raises up to $5 million from the general public through an SEC-registered funding portal (Republic, Wefunder, StartEngine). Regulation A+ allows "mini-IPOs" up to $75 million per year with a streamlined disclosure process. The threshold question before any raise: talk to a securities attorney. Selling securities without a valid exemption — even to friends and family — can result in rescission rights, regulatory action, and personal liability. NVCA at nvca.org and Gust at gust.com publish model term sheets and investor documents.

If you're an employee of a public company with access to material nonpublic information (MNPI): Insider trading enforcement is one of the SEC's most active areas. Trading on MNPI — or tipping someone else who then trades — is illegal under Section 10(b) and Rule 10b-5 regardless of whether you're a C-suite executive or a mid-level employee who overheard something. The SEC uses sophisticated analytics to detect unusual trading patterns before earnings announcements, M&A disclosures, and other material events. Your company's securities trading policy defines your specific restrictions; typically: trading windows open only for brief periods after quarterly earnings releases, and any trades over a threshold require pre-clearance from the general counsel. If you're unsure whether information you have constitutes MNPI, assume it does and don't trade. Violations can result in disgorgement of profits, civil penalties up to three times profits, and criminal prosecution with up to 20 years imprisonment under the Insider Trading Sanctions Act. Consult your company's general counsel or an outside securities attorney before trading if you have any doubt.

If you're an institutional investor, fund manager, or investment advisor: Depending on your AUM and activities, you may be subject to SEC registration and ongoing compliance obligations. Investment advisers managing $100 million or more in assets must register with the SEC as Registered Investment Advisers (RIAs) and file Form ADV, which is publicly available at adviserinfo.sec.gov — where investors can research your firm's background, fees, and disciplinary history. Advisers below $100 million typically register at the state level. Under the Investment Advisers Act of 1940, you owe a fiduciary duty to your clients — acting in their best interest, disclosing conflicts of interest, and maintaining the investment policies you've committed to. The SEC's Regulation Best Interest (Reg BI) extended a best-interest standard to broker-dealers for retail recommendations. CFTC has parallel jurisdiction over derivatives and commodities advisors. Track SEC rulemaking at sec.gov/rules and the SEC's Office of Compliance Inspections and Examinations (OCIE) exam priorities at sec.gov/ocie.

State Variations

Securities regulation operates under a dual federal-state system. The National Securities Markets Improvement Act (1996) preempts state registration for nationally traded securities and Reg D offerings, but states retain:

• Anti-fraud authority: States can bring fraud enforcement actions on any securities transaction
• Blue sky laws: State registration requirements still apply to some smaller offerings
• Broker-dealer regulation: States register and examine broker-dealers alongside FINRA and the SEC
• Notice filings: States require notice filings and fees for many exempt offerings

Pending Legislation (119th Congress)

• HR4134 / HR7008 — Stop Insider Trading Act — Bars lawmakers and immediate families from buying public company stocks; requires 7-14 day public notice for sales; imposes fees for violations
• HR7085 — Conflict Minerals Disclosure Repeal — Would repeal SEC rules requiring companies to report use of conflict minerals in securities filings
• HR6161 — SEC Data Protection Act — Requires SEC to create rules protecting sensitive nonpublic proprietary information from investment advisers
• HR3880 — Small Business Investor Capital Access Act — Raises the private fund adviser exemption to $175M with five-year CPI-U inflation adjustments
• HR3935 — Municipal Securities Rulemaking Board Reform Act — Restructures MSRB membership, expands rule powers, sets data fee limits
• HR 3318 (Rep. Downing, R-MT) — SEC Modernization Act. Would reorganize several SEC offices, shift reporting lines, and allow regional office consolidations. Status: Introduced.
• HR 2689 (Rep. McClain, R-MI) — Would move oversight of national securities associations to the SEC. Status: Introduced.
• HR 216 (Rep. Sessions, R-TX) — SEC Act of 2025. Sets one standard across four securities laws so related acts can count as a single violation for penalties. Status: Introduced.
• S 658 (Sen. Kennedy, R-LA) — Protecting Investors' Personally Identifiable Information Act. Keeps investors' PII out of routine consolidated audit trail reports. Status: Introduced.
• HR 257 (Rep. Bice, R-OK) — SEC Act of 2025. Blocks the SEC from forcing companies to report climate information unless material to investors. Status: Introduced.
• HR 3690 (Rep. Lucas, R-OK) — Securing Innovation in Financial Regulation Act. Would create SEC FinHub and codify CFTC LabCFTC to centralize fintech engagement. Status: Introduced.

Recent Developments

The SEC has expanded its enforcement focus to include cryptocurrency and digital assets, pursuing cases alleging that certain tokens are unregistered securities — overlapping with CFTC jurisdiction over crypto derivatives. The CFPB exercises complementary authority over consumer financial products. Climate-related disclosure rules have been proposed and partially adopted. The SEC has also updated the accredited investor definition to include certain professional certifications, and has modernized Regulation Crowdfunding and Regulation A+ to increase offering limits and reduce compliance burdens.

In March 2026, the SEC adopted final amendments to its rules and forms implementing the Holding Foreign Insiders Accountable Act, strengthening disclosure requirements for foreign companies listed on U.S. exchanges. Separately, the 24X National Exchange LLC applied for a temporary exemption to permit overnight securities trading.

• In January 2026, the Securities Investor Protection Corporation (SIPC) filed notice of an inflation adjustment to the SIPA customer protection limits, updating the maximum advance amounts for cash claims.