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Contract OI history

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Nov 20, 2026 EXPIRATION

SEI $42.50 Put

SEI261120P00042500

Latest saved OI674Oct 23, 2026
Last change0vs previous saved observation
Saved market days9Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SEI $42.50 put open interest history 9 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6803400 2026-10-02: 680 OI2026-10-06: 680 OI2026-10-07: 680 OI2026-10-08: 680 OI2026-10-09: 680 OI2026-10-13: 680 OI2026-10-15: 674 OI2026-10-20: 674 OI2026-10-23: 674 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

SEI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing6740
Oct 20, 20266740
Oct 15, 2026674-6
Oct 13, 20266800
Oct 09, 20266800
Oct 08, 20266800
Oct 07, 20266800
Oct 06, 20266800
Oct 02, 2026680No prior observation