OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

BL $22.50 Put

BL261120P00022500

Latest saved OI69Oct 23, 2026
Last change-19vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BL $22.50 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. 88440 2026-10-09: 75 OI2026-10-13: 85 OI2026-10-14: 85 OI2026-10-16: 87 OI2026-10-20: 88 OI2026-10-23: 69 OI Oct 09, 2026Oct 23, 2026

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

BL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing69-19
Oct 20, 202688+1
Oct 16, 202687+2
Oct 14, 2026850
Oct 13, 202685+10
Oct 09, 202675No prior observation