OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

NB $4.00 Put

NB261023P00004000

Latest saved OI38Oct 23, 2026
Last change-17vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
NB $4.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2691340 2026-10-09: 269 OI2026-10-13: 269 OI2026-10-14: 269 OI2026-10-16: 269 OI2026-10-21: 55 OI2026-10-23: 38 OI Oct 09, 2026Oct 23, 2026

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

NB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 202638-17
Oct 21, 2026Viewing55-214
Oct 16, 20262690
Oct 14, 20262690
Oct 13, 20262690
Oct 09, 2026269No prior observation