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Contract OI history

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Jan 21, 2028 EXPIRATION

STM $42.00 Put

STM280121P00042000

Latest saved OI751Oct 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 $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. 7513750 2026-10-02: 727 OI2026-10-05: 727 OI2026-10-06: 746 OI2026-10-07: 746 OI2026-10-08: 746 OI2026-10-09: 746 OI2026-10-13: 746 OI2026-10-14: 746 OI2026-10-15: 746 OI2026-10-16: 746 OI2026-10-21: 746 OI2026-10-23: 751 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, 2026751+5
Oct 21, 2026Viewing7460
Oct 16, 20267460
Oct 15, 20267460
Oct 14, 20267460
Oct 13, 20267460
Oct 09, 20267460
Oct 08, 20267460
Oct 07, 20267460
Oct 06, 2026746+19
Oct 05, 20267270
Oct 02, 2026727No prior observation