OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

HAL $31.50 Put

HAL261023P00031500

Latest saved OI578Oct 23, 2026
Last change+110vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HAL $31.50 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. 5782890 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 1 OI2026-10-07: 2 OI2026-10-08: 2 OI2026-10-09: 4 OI2026-10-13: 4 OI2026-10-14: 22 OI2026-10-15: 44 OI2026-10-16: 256 OI2026-10-21: 468 OI2026-10-23: 578 OI Oct 02, 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, 2026Viewing578+110
Oct 21, 2026468+212
Oct 16, 2026256+212
Oct 15, 202644+22
Oct 14, 202622+18
Oct 13, 202640
Oct 09, 20264+2
Oct 08, 202620
Oct 07, 20262+1
Oct 06, 20261+1
Oct 05, 202600
Oct 02, 20260No prior observation