OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

ALK $30.00 Put

ALK270521P00030000

Latest saved OI537Oct 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
ALK $30.00 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. 5372680 2026-10-02: 1 OI2026-10-05: 1 OI2026-10-06: 1 OI2026-10-07: 1 OI2026-10-08: 1 OI2026-10-09: 1 OI2026-10-13: 1 OI2026-10-14: 2 OI2026-10-15: 2 OI2026-10-16: 285 OI2026-10-21: 536 OI2026-10-23: 537 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ALK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing537+1
Oct 21, 2026536+251
Oct 16, 2026285+283
Oct 15, 202620
Oct 14, 20262+1
Oct 13, 202610
Oct 09, 202610
Oct 08, 202610
Oct 07, 202610
Oct 06, 202610
Oct 05, 202610
Oct 02, 20261No prior observation