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Contract OI history

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Jan 21, 2028 EXPIRATION

STM $35.00 Put

STM280121P00035000

Latest saved OI1,412Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
STM $35.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,4127060 2026-10-02: 1,309 OI2026-10-05: 1,349 OI2026-10-06: 1,357 OI2026-10-07: 1,357 OI2026-10-08: 1,357 OI2026-10-09: 1,357 OI2026-10-13: 1,407 OI2026-10-14: 1,407 OI2026-10-15: 1,407 OI2026-10-16: 1,407 OI2026-10-21: 1,407 OI2026-10-23: 1,412 OI Oct 02, 2026Oct 23, 2026

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

STM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261,412+5
Oct 21, 2026Viewing1,4070
Oct 16, 20261,4070
Oct 15, 20261,4070
Oct 14, 20261,4070
Oct 13, 20261,407+50
Oct 09, 20261,3570
Oct 08, 20261,3570
Oct 07, 20261,3570
Oct 06, 20261,357+8
Oct 05, 20261,349+40
Oct 02, 20261,309No prior observation