OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

STM $30.00 Put

STM280121P00030000

Latest saved OI4,720Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
STM $30.00 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. 4,7202,3600 2026-10-02: 4,719 OI2026-10-05: 4,719 OI2026-10-06: 4,719 OI2026-10-07: 4,719 OI2026-10-08: 4,719 OI2026-10-09: 4,719 OI2026-10-13: 4,719 OI2026-10-14: 4,719 OI2026-10-15: 4,719 OI2026-10-16: 4,719 OI2026-10-21: 4,720 OI2026-10-23: 4,720 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, 2026Viewing4,7200
Oct 21, 20264,720+1
Oct 16, 20264,7190
Oct 15, 20264,7190
Oct 14, 20264,7190
Oct 13, 20264,7190
Oct 09, 20264,7190
Oct 08, 20264,7190
Oct 07, 20264,7190
Oct 06, 20264,7190
Oct 05, 20264,7190
Oct 02, 20264,719No prior observation