OITracker Cboe delayed data

Contract OI history

Back to STM

Oct 30, 2026 EXPIRATION

STM $55.00 Call

STM261030C00055000

Latest saved OI167Oct 23, 2026
Last change+8vs 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. 167830 2026-10-02: 93 OI2026-10-05: 98 OI2026-10-06: 100 OI2026-10-07: 100 OI2026-10-08: 100 OI2026-10-09: 104 OI2026-10-13: 106 OI2026-10-14: 106 OI2026-10-15: 139 OI2026-10-16: 150 OI2026-10-21: 159 OI2026-10-23: 167 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, 2026Viewing167+8
Oct 21, 2026159+9
Oct 16, 2026150+11
Oct 15, 2026139+33
Oct 14, 20261060
Oct 13, 2026106+2
Oct 09, 2026104+4
Oct 08, 20261000
Oct 07, 20261000
Oct 06, 2026100+2
Oct 05, 202698+5
Oct 02, 202693No prior observation