Late-Night Options Auctions Get a Clarity Boost from Nasdaq ISE
Published Date: 3/18/2025
Notice
Summary
Nasdaq ISE just updated its FLEX trading rules to clear up what happens when FLEX auctions run past market closing time. This change affects traders using FLEX options and kicks in right away, making trading smoother and more predictable. The SEC is open to feedback for the next 60 days, but the new rules are already in action!
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Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
FLEX Auction Timing Clarified
If you trade FLEX options on Nasdaq ISE, the exchange changed its rules to clarify what happens when a FLEX auction runs past the market close. The change took effect immediately when filed on March 7, 2025, and the SEC is accepting public comments through April 8, 2025.
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