MIAX PEARL Syncs Error Rules to 23-Hour Trading
Published Date: 9/29/2026
Notice
Summary
MIAX PEARL is updating its rule about fixing trading mistakes to match new 23-hour, 5-day trading hours approved by regulators. This change helps keep trading fair and clear when errors happen during these extended hours. Traders on MIAX PEARL should know this update is effective immediately, ensuring smoother and more accurate market operations without extra costs.
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
Trades During Overnight Bands Will Generally Stand
If you trade on MIAX Pearl during the new 23/5 trading hours, trades executed during the Overnight Protected Hours (9:00 p.m. ET through 4:00 a.m. ET) that occur within the Overnight Price Bands generally will not be eligible for "clearly erroneous" cancellation. The Overnight Price Bands were approved as temporary static bands 20% above and below two reference points, and the rule change becomes operative at the start of 23/5 Trading on December 6, 2026.
Rights and Warrants Eligible for Overnight Review
Transactions in NMS Stocks that are not subject to the LULD Plan (for example, rights and warrants) executed during Overnight Protected Hours will remain eligible for clearly erroneous review and will be reviewed using the same Numerical Guidelines that apply to the Early and Late Trading Sessions. This treatment will apply starting when 23/5 Trading commences industry-wide on December 6, 2026.
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