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Contract OI history

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Jan 15, 2027 EXPIRATION

STM $42.00 Put

STM270115P00042000

Latest saved OI672Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
STM $42.00 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. 6783390 2026-10-02: 671 OI2026-10-05: 676 OI2026-10-06: 676 OI2026-10-07: 676 OI2026-10-08: 676 OI2026-10-09: 676 OI2026-10-13: 678 OI2026-10-14: 678 OI2026-10-15: 670 OI2026-10-16: 670 OI2026-10-21: 670 OI2026-10-23: 672 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, 2026672+2
Oct 21, 2026Viewing6700
Oct 16, 20266700
Oct 15, 2026670-8
Oct 14, 20266780
Oct 13, 2026678+2
Oct 09, 20266760
Oct 08, 20266760
Oct 07, 20266760
Oct 06, 20266760
Oct 05, 2026676+5
Oct 02, 2026671No prior observation