Four Exchanges, One Very Specific Report About Missed Liquidity
Published Date: 11/4/2026
Notice
Summary
Cboe EDGX Exchange is upgrading its Missed Liquidity Report, part of the Cboe Timestamping Service, to give traders clearer and better info on missed trading chances. This change helps market pros track and improve their trading strategies faster and starts right away with no extra fees. If you trade or analyze stocks, these improvements will make your data smarter and more useful.
Analyzed Economic Effects
4 provisions identified: 4 benefits, 0 costs, 0 mixed.
Missed Liquidity Report Adds Auctions
If your firm submits complex auction orders, the Missed Liquidity Report will now include Complex Order Auction (COA) and Complex Automated Improvement Mechanism (C-AIM) events. The report will show time details for your eligible Auction Orders and for executions of other Auction Orders you tried to hit within an Exchange-determined window (not to exceed 1 millisecond after, and 100 microseconds before, the first attempt to execute).
New Auction Price Levels Field
For Auctions that clear across multiple price levels, the Missed Liquidity Report will now include a new price field showing each price level at which Auction Orders were executed and the price levels where the Recipient Member's orders, modify messages, and quotes were. This lets a subscribing Member see where their messages sat relative to the prices that actually executed in the Auction.
Report Access, Timing, and Data Limits
The enhanced Missed Liquidity Report remains an optional product available to any Exchange Member that chooses to subscribe; it contains only historical data for the prior trading day (generally on a T+1 basis), does not include real-time market data, and provides data specific to the Recipient Member's own messages while anonymizing other participants.
No Fee Increase Proposed Now
In the October 21, 2026 filing, the Exchange states it is not proposing any fee increases for the Cboe Timestamping Service at this time. (The Exchange separately plans a future filing to propose fees for the Missed Liquidity Report and Cancels Report.)
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Key Dates
Department and Agencies
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Previous: 2026-22460, Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Introduce Enhancements to the Missed Liquidity Report Offered as Part of the Cboe Timestamping Service
Cboe BZX Exchange is upgrading its Missed Liquidity Report, part of the Cboe Timestamping Service, to give traders better info on missed trading chances. This change helps market participants spot and act on missed liquidity faster, improving trading decisions. The update took effect right after filing on October 21, 2026, with no extra fees announced.
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