OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

U $40.00 Put

U270115P00040000

Latest saved OI2,766Oct 23, 2026
Last change+31vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
U $40.00 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. 2,7661,3830 2026-10-02: 1,223 OI2026-10-05: 1,228 OI2026-10-06: 1,258 OI2026-10-07: 1,260 OI2026-10-08: 1,260 OI2026-10-09: 2,361 OI2026-10-14: 2,386 OI2026-10-15: 2,404 OI2026-10-16: 2,421 OI2026-10-21: 2,735 OI2026-10-23: 2,766 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, 20262,766+31
Oct 21, 2026Viewing2,735+314
Oct 16, 20262,421+17
Oct 15, 20262,404+18
Oct 14, 20262,386+25
Oct 09, 20262,361+1,101
Oct 08, 20261,2600
Oct 07, 20261,260+2
Oct 06, 20261,258+30
Oct 05, 20261,228+5
Oct 02, 20261,223No prior observation