Exchange Finally Deletes Expired Tick Size Rules
Published Date: 6/23/2026
Notice
Summary
Nasdaq PHLX is cleaning house by deleting old rules about the Tick Size Pilot, a test that ended years ago. This change affects traders and market participants by removing outdated info, making the rulebook clearer and easier to use. The update took effect immediately on June 10, 2026, with no impact on fees or trading costs.
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
Remove Obsolete Tick Size Rule
Nasdaq PHLX deleted obsolete rule text in Equity 4, Rule 3317 that implemented the Tick Size Pilot. The Tick Size Pilot ran for two years starting in October 2016, and the rule change took effect on June 10, 2026. The filing states this update does not change fees or trading costs.
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Key Dates
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