OITracker Cboe delayed data

Contract OI history

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Feb 19, 2027 EXPIRATION

BL $20.00 Call

BL270219C00020000

Latest saved OI420Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BL $20.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4202100 2026-10-09: 420 OI2026-10-13: 420 OI2026-10-14: 420 OI2026-10-16: 420 OI2026-10-20: 420 OI2026-10-23: 420 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, 2026Viewing4200
Oct 20, 20264200
Oct 16, 20264200
Oct 14, 20264200
Oct 13, 20264200
Oct 09, 2026420No prior observation