OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

ALK $42.50 Put

ALK270115P00042500

Latest saved OI422Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALK $42.50 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. 4222110 2026-10-02: 392 OI2026-10-05: 392 OI2026-10-06: 392 OI2026-10-07: 392 OI2026-10-08: 392 OI2026-10-09: 392 OI2026-10-13: 372 OI2026-10-14: 372 OI2026-10-15: 372 OI2026-10-16: 420 OI2026-10-21: 422 OI2026-10-23: 422 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, 2026Viewing4220
Oct 21, 2026422+2
Oct 16, 2026420+48
Oct 15, 20263720
Oct 14, 20263720
Oct 13, 2026372-20
Oct 09, 20263920
Oct 08, 20263920
Oct 07, 20263920
Oct 06, 20263920
Oct 05, 20263920
Oct 02, 2026392No prior observation