OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

NB $2.50 Put

NB280121P00002500

Latest saved OI1,591Oct 23, 2026
Last change+5vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
NB $2.50 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. 1,5917950 2026-10-09: 1,488 OI2026-10-13: 1,488 OI2026-10-14: 1,489 OI2026-10-16: 1,489 OI2026-10-21: 1,586 OI2026-10-23: 1,591 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, 20261,591+5
Oct 21, 2026Viewing1,586+97
Oct 16, 20261,4890
Oct 14, 20261,489+1
Oct 13, 20261,4880
Oct 09, 20261,488No prior observation