OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

BN $40.00 Put

BN261120P00040000

Latest saved OI249Oct 23, 2026
Last change0vs 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. 5402700 2026-10-02: 392 OI2026-10-05: 392 OI2026-10-06: 392 OI2026-10-07: 442 OI2026-10-08: 462 OI2026-10-09: 472 OI2026-10-13: 476 OI2026-10-14: 499 OI2026-10-15: 539 OI2026-10-16: 540 OI2026-10-21: 249 OI2026-10-23: 249 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, 2026Viewing2490
Oct 21, 2026249-291
Oct 16, 2026540+1
Oct 15, 2026539+40
Oct 14, 2026499+23
Oct 13, 2026476+4
Oct 09, 2026472+10
Oct 08, 2026462+20
Oct 07, 2026442+50
Oct 06, 20263920
Oct 05, 20263920
Oct 02, 2026392No prior observation