OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

BL $30.00 Put

BL261218P00030000

Latest saved OI1,011Oct 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 $30.00 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. 1,0115050 2026-10-09: 1,011 OI2026-10-13: 1,011 OI2026-10-14: 1,011 OI2026-10-16: 1,011 OI2026-10-20: 1,011 OI2026-10-23: 1,011 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, 2026Viewing1,0110
Oct 20, 20261,0110
Oct 16, 20261,0110
Oct 14, 20261,0110
Oct 13, 20261,0110
Oct 09, 20261,011No prior observation