Exchanges Add Safety Bands for After-Hours Stock Swings
Published Date: 6/4/2026
Notice
Summary
Big stock market players like Nasdaq and NYSE are teaming up to add special safety rules for overnight trading to stop wild price swings. These new temporary price bands will help keep trading calmer when the market is closed overnight. This change kicks in soon and aims to protect investors from sudden money surprises during those late hours.
Analyzed Economic Effects
4 provisions identified: 0 benefits, 0 costs, 4 mixed.
New Overnight Trading Window
The Plan defines Overnight Protected Hours as 9:00 p.m. Eastern Time Sunday through Thursday to 4:00 a.m. Eastern Time the next day. The Participants expect Processors to begin overnight trading preparations for expanded hours on December 6, 2026, and the Participants will announce the Operative Date once systems changes are complete.
20% Overnight Price Bands Set
During Overnight Protected Hours the Primary Listing Exchange will calculate an Overnight Lower Price Band and Overnight Upper Price Band based on two reference prices (the official closing price and the consolidated last round-lot sale as of 7:45 p.m. ET). The bands use a 20% Percentage Parameter (20% × leverage ratio for leveraged ETPs) with minimum thresholds of $1.00 for stocks under $1.00 and $3.00 for stocks $1.00 or more; Primary Listing Exchanges must send bands to Processors by 8:55 p.m. ET for public dissemination before 9:00 p.m. ET.
Orders Outside Bands Rejected; Overnight Halts
Trading centers operating during Overnight Protected Hours must prevent trades and price displays outside the Overnight Price Bands, and orders outside the bands will be rejected. Primary Listing Exchanges may declare a Regulatory Halt during Overnight Protected Hours; if a Regulatory Halt is declared, Participants will reject orders for that stock and the stock will not reopen during the overnight session.
Phase 1 Now; Phase 2 Planned in 2027
The overnight protections will be implemented in Phase 1 as an interim structure; the Participants expect to gather data during 23/5 trading and submit a Phase 2 proposal intended to be implemented by the fourth quarter of 2027. Phase 2 may include sliding price bands, Processors calculating and disseminating bands, and recalibrated Percentage Parameters that could differ by stock tier.
Your PRIA Score
Personalized for You
How does this regulation affect your finances?
Sign up for a PRIA Policy Scan to see your personalized alignment score for this federal register document and every other regulation we track. We analyze your financial profile against policy provisions to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-12163 — The Trade-Through Rule and Locked and Crossed Markets Provisions of Regulation NMS
The SEC wants to scrap some old rules that stop stocks from being traded at worse prices and prevent confusing market quotes. This change affects stock traders and exchanges, aiming to simplify trading and possibly speed things up. If you want to share your thoughts, you’ve got until August 17, 2026, so don’t miss out!
2026-10373 — Registered Offering Reform
The SEC wants to make it easier and cheaper for more companies to sell their stocks and bonds to the public. They’re opening up special forms and benefits to more businesses, updating rules to be more modern, and cutting red tape by overriding some state rules. If you’re a company planning to raise money, these changes could speed things up and save you money, with feedback due by July 27, 2026.
2026-10222 — Enhancement of Emerging Growth Company Accommodations and Simplification of Filer Status for Reporting Companies
The SEC is making it easier for companies that report their finances by simplifying their categories into just two groups: big and small filers. Smaller companies, including emerging growth ones, will get more time to file reports and enjoy simpler rules, while big companies keep stricter standards. These changes aim to save time and money, with feedback open until July 20, 2026.
2026-07651 — Concept Release on Consolidated Audit Trail and Other Audit Trails and Data Sources
The SEC wants your thoughts on how it tracks stock market trades using the Consolidated Audit Trail and other data tools. They’re thinking about updating rules to keep up with new tech, privacy, and security needs, and to make sure the system is fair and cost-effective. If you’re involved in the stock market or data tracking, speak up by June 22, 2026!
2026-14620 — Self-Regulatory Organizations; Texas Stock Exchange LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Adopt the Initial Schedule of Fees and Rebates Applicable to Members of the Exchange and Adopt a Monthly Membership Fee
The Texas Stock Exchange is rolling out its first-ever fee and rebate schedule for its members, plus a monthly membership fee. This means anyone trading on TXSE will see new costs and potential rebates starting as soon as the exchange opens. It’s all about setting clear rules and fees to keep things running smoothly from day one.
2026-14624 — Self-Regulatory Organizations; LCH SA; Notice of Filing and Immediate Effectiveness of Proposed Rule Change Relating To Providing Clearing Services for Fee Grid for the Triparty Collateral Mechanism
LCH SA is updating its rules to allow certain securities to be used as initial margin through a special triparty collateral system. They’re also adding new fees for this service, which take effect immediately. This change mainly affects financial firms using LCH SA’s clearing services and means some new costs will apply starting now.
Previous / Next Documents
Previous: 2026-11146 — Self-Regulatory Organizations; 24X National Exchange LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend the Limited Liability Agreement of 24X US Holdings LLC in Connection With a Transaction
24X National Exchange is updating its parent company’s agreement to add new voting shares for Shinhan Securities after they convert a special loan into ownership. This change affects company control and takes effect immediately, with no direct cost impact announced. It’s a smooth move to keep things clear and official as ownership shifts.
Next: 2026-11148 — Notice of Performance Review Board
The Advisory Council on Historic Preservation just named new members to their Performance Review Board, starting June 1, 2026. This board helps review how well top employees are doing, making sure the agency runs smoothly. If you work with or follow the ACHP, these changes keep things fair and on track—no budget changes, just fresh faces in charge!