OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

CE $40.00 Put

CE261120P00040000

Latest saved OI201Oct 23, 2026
Last change+34vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CE $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. 2011000 2026-10-02: 92 OI2026-10-05: 92 OI2026-10-06: 92 OI2026-10-07: 140 OI2026-10-08: 145 OI2026-10-09: 135 OI2026-10-13: 166 OI2026-10-14: 171 OI2026-10-16: 174 OI2026-10-20: 167 OI2026-10-23: 201 OI Oct 02, 2026Oct 23, 2026

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

CE contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing201+34
Oct 20, 2026167-7
Oct 16, 2026174+3
Oct 14, 2026171+5
Oct 13, 2026166+31
Oct 09, 2026135-10
Oct 08, 2026145+5
Oct 07, 2026140+48
Oct 06, 2026920
Oct 05, 2026920
Oct 02, 202692No prior observation