OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

HAL $40.00 Put

HAL261218P00040000

Latest saved OI890Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HAL $40.00 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. 8904450 2026-10-02: 885 OI2026-10-05: 885 OI2026-10-06: 889 OI2026-10-07: 889 OI2026-10-08: 889 OI2026-10-09: 889 OI2026-10-13: 890 OI2026-10-14: 890 OI2026-10-15: 890 OI2026-10-16: 890 OI2026-10-21: 890 OI2026-10-23: 890 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, 2026Viewing8900
Oct 21, 20268900
Oct 16, 20268900
Oct 15, 20268900
Oct 14, 20268900
Oct 13, 2026890+1
Oct 09, 20268890
Oct 08, 20268890
Oct 07, 20268890
Oct 06, 2026889+4
Oct 05, 20268850
Oct 02, 2026885No prior observation