Title 15Commerce and TradeRelease 119-73

§80b–6 Prohibited transactions by investment advisers

Title 15 › Chapter CHAPTER 2D— - INVESTMENT COMPANIES AND ADVISERS › Subchapter SUBCHAPTER II— - INVESTMENT ADVISERS › § 80b–6

Last updated Apr 6, 2026|Official source

Summary

Investment advisers must not use mail, phone, internet, or other ways that cross state lines to cheat or trick current or potential clients, run business practices that deceive them, or mix their own trades with a client's without telling the client in writing before the trade and getting the client's consent. The rule about telling and getting consent does not apply when the transaction is with a broker‑dealer’s customer and the broker‑dealer is not acting as an investment adviser. The Securities and Exchange Commission will write rules to define and try to prevent fraudulent, deceptive, or manipulative acts.

Full Legal Text

Title 15, §80b–6

Commerce and Trade — Source: USLM XML via OLRC

It shall be unlawful for any investment adviser by use of the mails or any means or instrumentality of interstate commerce, directly or indirectly—
(1)to employ any device, scheme, or artifice to defraud any client or prospective client;
(2)to engage in any transaction, practice, or course of business which operates as a fraud or deceit upon any client or prospective client;
(3)acting as principal for his own account, knowingly to sell any security to or purchase any security from a client, or acting as broker for a person other than such client, knowingly to effect any sale or purchase of any security for the account of such client, without disclosing to such client in writing before the completion of such transaction the capacity in which he is acting and obtaining the consent of the client to such transaction. The prohibitions of this paragraph shall not apply to any transaction with a customer of a broker or dealer if such broker or dealer is not acting as an investment adviser in relation to such transaction; or
(4)to engage in any act, practice, or course of business which is fraudulent, deceptive, or manipulative. The Commission shall, for the purposes of this paragraph (4) by rules and regulations define, and prescribe means reasonably designed to prevent, such acts, practices, and courses of business as are fraudulent, deceptive, or manipulative.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

Amendments

2010—Par. (3). Pub. L. 111–203 inserted “or” at end. 1960—Pub. L. 86–750, § 8, struck out “registered under section 80b–3 of this title” from introductory text. Par. (4). Pub. L. 86–750, § 9, added par. (4).

Statutory Notes and Related Subsidiaries

Effective Date

of 2010 AmendmentAmendment by Pub. L. 111–203 effective 1 day after July 21, 2010, except as otherwise provided, see section 4 of Pub. L. 111–203, set out as an

Effective Date

note under section 5301 of Title 12, Banks and Banking.

Reference

Citations & Metadata

Citation

15 U.S.C. § 80b–6

Title 15Commerce and Trade

Last Updated

Apr 6, 2026

Release point: 119-73