NYSE Arca Adjusts Ratio Threshold Auction Fee
Published Date: 6/16/2026
Notice
Summary
NYSE Arca is changing how it charges a special fee called the Ratio Threshold Fee, which affects certain auction-only stock orders during key market moments like the opening and closing auctions. This update tweaks when and how the fee applies, potentially impacting traders who use these auctions. The new fee rules kicked in right away on June 1, 2026, so market players should check their costs now!
Analyzed Economic Effects
3 provisions identified: 2 benefits, 0 costs, 1 mixed.
Dual 500,000 Thresholds for Auction Fee
If you are an ETP Holder (a trading firm that sends orders to NYSE Arca), the Ratio Threshold Fee for Auction-Only Orders will now be charged only when BOTH your average daily cancelled shares and your average daily weighted cancelled shares each equal or exceed 500,000. This new rule took effect on June 1, 2026 and narrows when the fee applies during the Core Open and Closing Auction imbalance dissemination periods.
Fix for Zero-Execution Weighted Ratio
The Exchange changed the Weighted Ratio Shares Threshold calculation so that if an ETP Holder executes zero shares in an auction, the denominator will be set to 1. For example, an ETP Holder with 1,000,000 Weighted Ratio Shares and 0 executed shares would have a threshold of 1,000,000 under the revised rule, effective June 1, 2026.
Exchange Says Only Four Firms Affected Historically
NYSE Arca analyzed order entry from January through April 2026 and reported that only 4 ETP Holders would have incurred the Ratio Threshold Fee under the modified calculation. The Exchange stated it does not anticipate that additional ETP Holders would be subject to the fee after the recalibration.
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