OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

ALKS $42.00 Put

ALKS261218P00042000

Latest saved OI208Oct 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 $42.00 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. 2081040 2026-10-08: 208 OI2026-10-09: 208 OI2026-10-13: 208 OI2026-10-14: 208 OI2026-10-16: 208 OI2026-10-20: 208 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, 2026Viewing2080
Oct 16, 20262080
Oct 14, 20262080
Oct 13, 20262080
Oct 09, 20262080
Oct 08, 2026208No prior observation