OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

BN $40.00 Put

BN261218P00040000

Latest saved OI196Oct 23, 2026
Last change-26vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BN $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. 2221110 2026-10-02: 4 OI2026-10-05: 5 OI2026-10-06: 11 OI2026-10-07: 41 OI2026-10-08: 80 OI2026-10-09: 110 OI2026-10-13: 110 OI2026-10-14: 151 OI2026-10-15: 221 OI2026-10-16: 221 OI2026-10-21: 222 OI2026-10-23: 196 OI Oct 02, 2026Oct 23, 2026

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

BN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing196-26
Oct 21, 2026222+1
Oct 16, 20262210
Oct 15, 2026221+70
Oct 14, 2026151+41
Oct 13, 20261100
Oct 09, 2026110+30
Oct 08, 202680+39
Oct 07, 202641+30
Oct 06, 202611+6
Oct 05, 20265+1
Oct 02, 20264No prior observation