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Contract OI history

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Jan 21, 2028 EXPIRATION

STM $40.00 Call

STM280121C00040000

Latest saved OI563Oct 23, 2026
Last change-4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
STM $40.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5702850 2026-10-02: 570 OI2026-10-05: 569 OI2026-10-06: 569 OI2026-10-07: 567 OI2026-10-08: 567 OI2026-10-09: 566 OI2026-10-13: 567 OI2026-10-14: 567 OI2026-10-15: 567 OI2026-10-16: 567 OI2026-10-21: 567 OI2026-10-23: 563 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, 2026563-4
Oct 21, 2026Viewing5670
Oct 16, 20265670
Oct 15, 20265670
Oct 14, 20265670
Oct 13, 2026567+1
Oct 09, 2026566-1
Oct 08, 20265670
Oct 07, 2026567-2
Oct 06, 20265690
Oct 05, 2026569-1
Oct 02, 2026570No prior observation