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Contract OI history

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Jan 21, 2028 EXPIRATION

STM $25.00 Put

STM280121P00025000

Latest saved OI952Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
STM $25.00 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. 9524760 2026-10-02: 952 OI2026-10-05: 952 OI2026-10-06: 952 OI2026-10-07: 952 OI2026-10-08: 952 OI2026-10-09: 952 OI2026-10-13: 952 OI2026-10-14: 952 OI2026-10-15: 952 OI2026-10-16: 952 OI2026-10-21: 952 OI2026-10-23: 952 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, 20269520
Oct 21, 2026Viewing9520
Oct 16, 20269520
Oct 15, 20269520
Oct 14, 20269520
Oct 13, 20269520
Oct 09, 20269520
Oct 08, 20269520
Oct 07, 20269520
Oct 06, 20269520
Oct 05, 20269520
Oct 02, 2026952No prior observation