OITracker Cboe delayed data

Contract OI history

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Sep 17, 2027 EXPIRATION

HAL $35.00 Put

HAL270917P00035000

Latest saved OI539Oct 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 $35.00 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. 6443220 2026-10-02: 643 OI2026-10-05: 643 OI2026-10-06: 643 OI2026-10-07: 643 OI2026-10-08: 643 OI2026-10-09: 643 OI2026-10-13: 643 OI2026-10-14: 644 OI2026-10-15: 625 OI2026-10-16: 625 OI2026-10-21: 539 OI2026-10-23: 539 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, 2026Viewing5390
Oct 21, 2026539-86
Oct 16, 20266250
Oct 15, 2026625-19
Oct 14, 2026644+1
Oct 13, 20266430
Oct 09, 20266430
Oct 08, 20266430
Oct 07, 20266430
Oct 06, 20266430
Oct 05, 20266430
Oct 02, 2026643No prior observation