OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

HAL $40.00 Call

HAL280121C00040000

Latest saved OI1,348Oct 23, 2026
Last change+8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HAL $40.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,3486740 2026-10-02: 1,301 OI2026-10-05: 1,301 OI2026-10-06: 1,301 OI2026-10-07: 1,334 OI2026-10-08: 1,334 OI2026-10-09: 1,337 OI2026-10-13: 1,337 OI2026-10-14: 1,338 OI2026-10-15: 1,338 OI2026-10-16: 1,338 OI2026-10-21: 1,340 OI2026-10-23: 1,348 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, 2026Viewing1,348+8
Oct 21, 20261,340+2
Oct 16, 20261,3380
Oct 15, 20261,3380
Oct 14, 20261,338+1
Oct 13, 20261,3370
Oct 09, 20261,337+3
Oct 08, 20261,3340
Oct 07, 20261,334+33
Oct 06, 20261,3010
Oct 05, 20261,3010
Oct 02, 20261,301No prior observation