OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

UNH $340.00 Put

UNH280121P00340000

Latest saved OI305Oct 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 $340.00 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. 3071530 2026-10-02: 264 OI2026-10-05: 264 OI2026-10-06: 266 OI2026-10-07: 262 OI2026-10-08: 262 OI2026-10-09: 303 OI2026-10-14: 307 OI2026-10-15: 307 OI2026-10-16: 307 OI2026-10-21: 307 OI2026-10-23: 305 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, 2026Viewing305-2
Oct 21, 20263070
Oct 16, 20263070
Oct 15, 20263070
Oct 14, 2026307+4
Oct 09, 2026303+41
Oct 08, 20262620
Oct 07, 2026262-4
Oct 06, 2026266+2
Oct 05, 20262640
Oct 02, 2026264No prior observation