🔴 Top Stories
Cboe EDGX and Nasdaq Push Toward 23x5 Overnight Trading
Both Cboe EDGX and Nasdaq are moving to extend equity trading to 23 hours a day, five days a week, via new overnight sessions (9:00 p.m.\u20134:00 a.m. ET) driven by retail and international demand. The key difference is procedural status: Nasdaq has already received SEC accelerated approval (a final green light for its 'Night Session', contingent on SIP readiness within 18 months), while EDGX's filing is only a notice of filing open for public comment with the SEC having up to 90 days to act. Both follow prior approvals for 24X National Exchange and NYSE Arca, and both restrict overnight trading to limit orders with no pegged/unpriced order types.
IEX RELEVANT The convergence of major incumbents (Nasdaq approved, EDGX proposed) on 23x5 trading intensifies pressure on IEX to decide whether to offer overnight sessions or cede growing retail and international order flow to competitors and ATSs.
Combined from 2 filings
🔵 IEX Competitive Intel
FINRA is eliminating the decades-old 'pattern day trader' rule — including the $25,000 minimum equity requirement and day-trading buying power limits — and replacing it with a modernized intraday margin standard that ties margin requirements to a customer's actual real-time market exposure at any point during the trading day. The SEC has fully approved this change (accelerated approval means it goes into effect faster than the standard 30-day waiting period after amendment), so this is not a pause or procedural step — the rule change is final and will be implemented. Members have 45 days from FINRA's Regulatory Notice before the new rules take effect, with an 18-month phase-in window for firms that need more time to update their systems.
IEX RELEVANT Removing the $25,000 pattern day trader barrier could meaningfully expand the pool of active retail traders in U.S. equity markets, potentially increasing overall order flow volume across all exchanges including IEX, while also raising the competitive stakes for attracting retail-driven order flow.
Proposal history
2026-01-14
notice of filing
Notice of Filing of a Proposed Rule Change To Amend FINRA Rule 4210 (Margin Requirements)…
NSCC (the central clearinghouse for U.S. equities) is proposing to extend its trade acceptance and clearing operations to a 24x5 model — running from Sunday 8pm to Friday 8pm — to support the broader industry push toward extended and overnight equity trading hours being pursued by NYSE Arca, Cboe EDGX, Nasdaq, 24X National Exchange, and various ATSs. This is a notice of filing, meaning the SEC is soliciting public comment before deciding whether to approve or disapprove the rule change; it does not take effect yet and the SEC has up to 90 days to act. If approved (targeted for June 28, 2026 implementation), brokers, exchanges, and ATSs would be able to have overnight trades centrally cleared and guaranteed by NSCC, removing a key operational barrier to widespread 24-hour U.S. equity trading.
IEX RELEVANT NSCC clearing support for overnight trading is a prerequisite infrastructure piece that would enable competitor exchanges like NYSE Arca, Cboe EDGX, and Nasdaq to operationalize 24x5 trading sessions, potentially intensifying competition for order flow in sessions where IEX currently has no presence and would need to decide whether to participate or cede ground.
Proposal history
2026-06-01
approval order
Order Approving Proposed Rule Change Concerning NSCC's Ability To Support Industry Effort…