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Contract OI history

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Jan 21, 2028 EXPIRATION

STM $50.00 Put

STM280121P00050000

Latest saved OI6,877Oct 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 $50.00 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. 7,8723,9360 2026-10-02: 7,850 OI2026-10-05: 7,860 OI2026-10-06: 7,864 OI2026-10-07: 7,864 OI2026-10-08: 7,864 OI2026-10-09: 7,867 OI2026-10-13: 7,872 OI2026-10-14: 7,872 OI2026-10-15: 7,872 OI2026-10-16: 7,872 OI2026-10-21: 6,872 OI2026-10-23: 6,877 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, 20266,877+5
Oct 21, 2026Viewing6,872-1,000
Oct 16, 20267,8720
Oct 15, 20267,8720
Oct 14, 20267,8720
Oct 13, 20267,872+5
Oct 09, 20267,867+3
Oct 08, 20267,8640
Oct 07, 20267,8640
Oct 06, 20267,864+4
Oct 05, 20267,860+10
Oct 02, 20267,850No prior observation