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Contract OI history

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Nov 20, 2026 EXPIRATION

ALK $27.50 Put

ALK261120P00027500

Latest saved OI511Oct 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 $27.50 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. 5122560 2026-10-02: 6 OI2026-10-05: 6 OI2026-10-06: 6 OI2026-10-07: 6 OI2026-10-08: 7 OI2026-10-09: 7 OI2026-10-13: 7 OI2026-10-14: 9 OI2026-10-15: 9 OI2026-10-16: 10 OI2026-10-21: 512 OI2026-10-23: 511 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, 2026Viewing511-1
Oct 21, 2026512+502
Oct 16, 202610+1
Oct 15, 202690
Oct 14, 20269+2
Oct 13, 202670
Oct 09, 202670
Oct 08, 20267+1
Oct 07, 202660
Oct 06, 202660
Oct 05, 202660
Oct 02, 20266No prior observation