OITracker Cboe delayed data

Contract OI history

Back to ALKS

Jan 21, 2028 EXPIRATION

ALKS $40.00 Put

ALKS280121P00040000

Latest saved OI667Oct 20, 2026
Last change0vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ALKS $40.00 put open interest history 6 saved observations from 2026-10-08 to 2026-10-20. Exact values and changes are listed in the table below. 6673330 2026-10-08: 667 OI2026-10-09: 667 OI2026-10-13: 667 OI2026-10-14: 667 OI2026-10-16: 667 OI2026-10-20: 667 OI Oct 08, 2026Oct 20, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ALKS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing6670
Oct 16, 20266670
Oct 14, 20266670
Oct 13, 20266670
Oct 09, 20266670
Oct 08, 2026667No prior observation