OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

NI $40.00 Put

NI270115P00040000

Latest saved OI202Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
NI $40.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2021010 2026-10-02: 192 OI2026-10-05: 192 OI2026-10-06: 192 OI2026-10-07: 192 OI2026-10-08: 192 OI2026-10-09: 192 OI2026-10-13: 196 OI2026-10-14: 196 OI2026-10-15: 197 OI2026-10-16: 197 OI2026-10-21: 197 OI2026-10-23: 202 OI Oct 02, 2026Oct 23, 2026

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

NI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026202+5
Oct 21, 2026Viewing1970
Oct 16, 20261970
Oct 15, 2026197+1
Oct 14, 20261960
Oct 13, 2026196+4
Oct 09, 20261920
Oct 08, 20261920
Oct 07, 20261920
Oct 06, 20261920
Oct 05, 20261920
Oct 02, 2026192No prior observation