OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

S $25.00 Put

S270115P00025000

Latest saved OI408Oct 23, 2026
Last change-10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
S $25.00 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. 4242120 2026-10-02: 400 OI2026-10-05: 400 OI2026-10-06: 407 OI2026-10-07: 407 OI2026-10-08: 407 OI2026-10-09: 410 OI2026-10-13: 420 OI2026-10-14: 420 OI2026-10-15: 424 OI2026-10-16: 418 OI2026-10-21: 418 OI2026-10-23: 408 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

S contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing408-10
Oct 21, 20264180
Oct 16, 2026418-6
Oct 15, 2026424+4
Oct 14, 20264200
Oct 13, 2026420+10
Oct 09, 2026410+3
Oct 08, 20264070
Oct 07, 20264070
Oct 06, 2026407+7
Oct 05, 20264000
Oct 02, 2026400No prior observation