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Contract OI history

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Oct 30, 2026 EXPIRATION

STM $50.00 Put

STM261030P00050000

Latest saved OI258Oct 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. 2611300 2026-10-02: 74 OI2026-10-05: 97 OI2026-10-06: 102 OI2026-10-07: 201 OI2026-10-08: 201 OI2026-10-09: 247 OI2026-10-13: 261 OI2026-10-14: 261 OI2026-10-15: 261 OI2026-10-16: 253 OI2026-10-21: 253 OI2026-10-23: 258 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, 2026258+5
Oct 21, 2026Viewing2530
Oct 16, 2026253-8
Oct 15, 20262610
Oct 14, 20262610
Oct 13, 2026261+14
Oct 09, 2026247+46
Oct 08, 20262010
Oct 07, 2026201+99
Oct 06, 2026102+5
Oct 05, 202697+23
Oct 02, 202674No prior observation