OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

STM $55.00 Call

STM270115C00055000

Latest saved OI3,700Oct 23, 2026
Last change-22vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
STM $55.00 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. 3,7221,8610 2026-10-02: 3,671 OI2026-10-05: 3,654 OI2026-10-06: 3,655 OI2026-10-07: 3,652 OI2026-10-08: 3,652 OI2026-10-09: 3,646 OI2026-10-13: 3,641 OI2026-10-14: 3,641 OI2026-10-15: 3,698 OI2026-10-16: 3,715 OI2026-10-21: 3,722 OI2026-10-23: 3,700 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, 20263,700-22
Oct 21, 2026Viewing3,722+7
Oct 16, 20263,715+17
Oct 15, 20263,698+57
Oct 14, 20263,6410
Oct 13, 20263,641-5
Oct 09, 20263,646-6
Oct 08, 20263,6520
Oct 07, 20263,652-3
Oct 06, 20263,655+1
Oct 05, 20263,654-17
Oct 02, 20263,671No prior observation