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Contract OI history

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Nov 20, 2026 EXPIRATION

SEI $37.50 Put

SEI261120P00037500

Latest saved OI493Oct 23, 2026
Last change+102vs previous saved observation
Saved market days9Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SEI $37.50 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. 4932460 2026-10-02: 99 OI2026-10-06: 99 OI2026-10-07: 99 OI2026-10-08: 99 OI2026-10-09: 99 OI2026-10-13: 99 OI2026-10-15: 99 OI2026-10-20: 391 OI2026-10-23: 493 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, 2026Viewing493+102
Oct 20, 2026391+292
Oct 15, 2026990
Oct 13, 2026990
Oct 09, 2026990
Oct 08, 2026990
Oct 07, 2026990
Oct 06, 2026990
Oct 02, 202699No prior observation