OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

HAL $31.00 Put

HAL261218P00031000

Latest saved OI506Oct 23, 2026
Last change+489vs previous saved observation
Saved market days4Oct 15, 2026 onwards
Daily open interest Hover a point for its date and OI
HAL $31.00 put open interest history 4 saved observations from 2026-10-15 to 2026-10-23. Exact values and changes are listed in the table below. 5062530 2026-10-15: 0 OI2026-10-16: 0 OI2026-10-21: 17 OI2026-10-23: 506 OI Oct 15, 2026Oct 23, 2026

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

HAL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing506+489
Oct 21, 202617+17
Oct 16, 202600
Oct 15, 20260No prior observation