BOX Exchange Fine-Tunes Rules for Market Maker Position Openings
Published Date: 12/5/2025
Notice
Summary
The BOX Exchange is updating its rules to let Market Makers open trades that help other traders close theirs, even when certain securities are being withdrawn. This change makes trading smoother and keeps the market fair for everyone involved. It’s effective immediately, so Market Makers and other traders can start benefiting right away without extra costs.
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
Market Makers May Open to Let Others Close
BOX Rule 5030 is amended so that Market Makers may enter opening transactions to accommodate closing transactions of other market participants in option series that have been restricted to closing-only (for example, classes being withdrawn or delisted). The Exchange says this helps market participants close positions in classes that will be delisted and is intended to protect investors and maintain fair and orderly markets.
Change Effective Immediately Upon Filing
The Commission waived the usual 30-day operative delay and designated the proposed rule change as operative upon filing (the Exchange filed on November 20, 2025), so Market Makers and other traders can begin using the new exception right away.
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