OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

UNH $400.00 Put

UNH280121P00400000

Latest saved OI361Oct 23, 2026
Last change-2vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
UNH $400.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3631810 2026-10-02: 334 OI2026-10-05: 334 OI2026-10-06: 334 OI2026-10-07: 334 OI2026-10-08: 334 OI2026-10-09: 334 OI2026-10-14: 335 OI2026-10-15: 335 OI2026-10-16: 332 OI2026-10-21: 363 OI2026-10-23: 361 OI Oct 02, 2026Oct 23, 2026

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

UNH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing361-2
Oct 21, 2026363+31
Oct 16, 2026332-3
Oct 15, 20263350
Oct 14, 2026335+1
Oct 09, 20263340
Oct 08, 20263340
Oct 07, 20263340
Oct 06, 20263340
Oct 05, 20263340
Oct 02, 2026334No prior observation