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Contract OI history

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Nov 20, 2026 EXPIRATION

ACAD $19.00 Put

ACAD261120P00019000

Latest saved OI27Oct 23, 2026
Last change+7vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ACAD $19.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 27130 2026-10-08: 8 OI2026-10-09: 10 OI2026-10-13: 11 OI2026-10-14: 11 OI2026-10-16: 11 OI2026-10-20: 20 OI2026-10-23: 27 OI Oct 08, 2026Oct 23, 2026

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

ACAD contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing27+7
Oct 20, 202620+9
Oct 16, 2026110
Oct 14, 2026110
Oct 13, 202611+1
Oct 09, 202610+2
Oct 08, 20268No prior observation