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Contract OI history

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Apr 16, 2027 EXPIRATION

ALK $40.00 Put

ALK270416P00040000

Latest saved OI404Oct 23, 2026
Last change+100vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALK $40.00 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. 4042020 2026-10-02: 303 OI2026-10-05: 303 OI2026-10-06: 303 OI2026-10-07: 303 OI2026-10-08: 303 OI2026-10-09: 303 OI2026-10-13: 303 OI2026-10-14: 304 OI2026-10-15: 304 OI2026-10-16: 304 OI2026-10-21: 304 OI2026-10-23: 404 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, 2026Viewing404+100
Oct 21, 20263040
Oct 16, 20263040
Oct 15, 20263040
Oct 14, 2026304+1
Oct 13, 20263030
Oct 09, 20263030
Oct 08, 20263030
Oct 07, 20263030
Oct 06, 20263030
Oct 05, 20263030
Oct 02, 2026303No prior observation