OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

ALKS $37.00 Put

ALKS261120P00037000

Latest saved OI3,346Oct 20, 2026
Last change+1,625vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ALKS $37.00 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. 3,3461,6730 2026-10-08: 1,139 OI2026-10-09: 1,139 OI2026-10-13: 1,139 OI2026-10-14: 1,139 OI2026-10-16: 1,721 OI2026-10-20: 3,346 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, 2026Viewing3,346+1,625
Oct 16, 20261,721+582
Oct 14, 20261,1390
Oct 13, 20261,1390
Oct 09, 20261,1390
Oct 08, 20261,139No prior observation