OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

HAL $25.00 Put

HAL280121P00025000

Latest saved OI4,112Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HAL $25.00 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. 4,1122,0560 2026-10-02: 3,887 OI2026-10-05: 3,887 OI2026-10-06: 3,929 OI2026-10-07: 3,937 OI2026-10-08: 3,937 OI2026-10-09: 4,111 OI2026-10-13: 4,111 OI2026-10-14: 4,111 OI2026-10-15: 4,111 OI2026-10-16: 4,111 OI2026-10-21: 4,111 OI2026-10-23: 4,112 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, 2026Viewing4,112+1
Oct 21, 20264,1110
Oct 16, 20264,1110
Oct 15, 20264,1110
Oct 14, 20264,1110
Oct 13, 20264,1110
Oct 09, 20264,111+174
Oct 08, 20263,9370
Oct 07, 20263,937+8
Oct 06, 20263,929+42
Oct 05, 20263,8870
Oct 02, 20263,887No prior observation