OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

ALK $22.50 Put

ALK270521P00022500

Latest saved OI48Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALK $22.50 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. 48240 2026-10-02: 43 OI2026-10-05: 43 OI2026-10-06: 43 OI2026-10-07: 43 OI2026-10-08: 43 OI2026-10-09: 43 OI2026-10-13: 43 OI2026-10-14: 43 OI2026-10-15: 43 OI2026-10-16: 43 OI2026-10-21: 43 OI2026-10-23: 48 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, 2026Viewing48+5
Oct 21, 2026430
Oct 16, 2026430
Oct 15, 2026430
Oct 14, 2026430
Oct 13, 2026430
Oct 09, 2026430
Oct 08, 2026430
Oct 07, 2026430
Oct 06, 2026430
Oct 05, 2026430
Oct 02, 202643No prior observation