OITracker Cboe delayed data

Contract OI history

Back to U

May 21, 2027 EXPIRATION

U $43.00 Put

U270521P00043000

Latest saved OI115Oct 23, 2026
Last change+91vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
U $43.00 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. 115570 2026-10-02: 18 OI2026-10-05: 18 OI2026-10-06: 25 OI2026-10-07: 25 OI2026-10-08: 25 OI2026-10-09: 28 OI2026-10-14: 28 OI2026-10-15: 24 OI2026-10-16: 25 OI2026-10-21: 24 OI2026-10-23: 115 OI Oct 02, 2026Oct 23, 2026

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

U contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing115+91
Oct 21, 202624-1
Oct 16, 202625+1
Oct 15, 202624-4
Oct 14, 2026280
Oct 09, 202628+3
Oct 08, 2026250
Oct 07, 2026250
Oct 06, 202625+7
Oct 05, 2026180
Oct 02, 202618No prior observation