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Contract OI history

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Jan 19, 2029 EXPIRATION

STM $50.00 Put

STM290119P00050000

Latest saved OI1,240Oct 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 $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. 1,2416200 2026-10-02: 30 OI2026-10-05: 31 OI2026-10-06: 76 OI2026-10-07: 661 OI2026-10-08: 661 OI2026-10-09: 661 OI2026-10-13: 1,241 OI2026-10-14: 1,241 OI2026-10-15: 1,241 OI2026-10-16: 1,241 OI2026-10-21: 1,240 OI2026-10-23: 1,240 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, 2026Viewing1,2400
Oct 21, 20261,240-1
Oct 16, 20261,2410
Oct 15, 20261,2410
Oct 14, 20261,2410
Oct 13, 20261,241+580
Oct 09, 20266610
Oct 08, 20266610
Oct 07, 2026661+585
Oct 06, 202676+45
Oct 05, 202631+1
Oct 02, 202630No prior observation