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Contract OI history

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Dec 18, 2026 EXPIRATION

ALK $50.00 Put

ALK261218P00050000

Latest saved OI197Oct 23, 2026
Last change-86vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALK $50.00 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. 2831410 2026-10-02: 283 OI2026-10-05: 283 OI2026-10-06: 283 OI2026-10-07: 283 OI2026-10-08: 283 OI2026-10-09: 283 OI2026-10-13: 283 OI2026-10-14: 283 OI2026-10-15: 283 OI2026-10-16: 283 OI2026-10-21: 283 OI2026-10-23: 197 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, 2026Viewing197-86
Oct 21, 20262830
Oct 16, 20262830
Oct 15, 20262830
Oct 14, 20262830
Oct 13, 20262830
Oct 09, 20262830
Oct 08, 20262830
Oct 07, 20262830
Oct 06, 20262830
Oct 05, 20262830
Oct 02, 2026283No prior observation