OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

SPOT $400.00 Put

SPOT270115P00400000

Latest saved OI448Oct 23, 2026
Last change-6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SPOT $400.00 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. 4592290 2026-10-02: 332 OI2026-10-05: 337 OI2026-10-06: 337 OI2026-10-07: 337 OI2026-10-08: 337 OI2026-10-09: 335 OI2026-10-13: 459 OI2026-10-14: 459 OI2026-10-15: 458 OI2026-10-16: 459 OI2026-10-21: 454 OI2026-10-23: 448 OI Oct 02, 2026Oct 23, 2026

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

SPOT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing448-6
Oct 21, 2026454-5
Oct 16, 2026459+1
Oct 15, 2026458-1
Oct 14, 20264590
Oct 13, 2026459+124
Oct 09, 2026335-2
Oct 08, 20263370
Oct 07, 20263370
Oct 06, 20263370
Oct 05, 2026337+5
Oct 02, 2026332No prior observation