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Contract OI history

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Jan 19, 2029 EXPIRATION

ALK $17.50 Call

ALK290119C00017500

Latest saved OI571Oct 23, 2026
Last change+570vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
ALK $17.50 call open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 5712850 2026-10-21: 1 OI2026-10-23: 571 OI Oct 21, 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, 2026Viewing571+570
Oct 21, 20261No prior observation