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Contract OI history

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Mar 19, 2027 EXPIRATION

ACAD $20.00 Put

ACAD270319P00020000

Latest saved OI445Oct 23, 2026
Last change+93vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ACAD $20.00 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. 4452220 2026-10-08: 4 OI2026-10-09: 4 OI2026-10-13: 5 OI2026-10-14: 5 OI2026-10-16: 5 OI2026-10-20: 352 OI2026-10-23: 445 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, 2026Viewing445+93
Oct 20, 2026352+347
Oct 16, 202650
Oct 14, 202650
Oct 13, 20265+1
Oct 09, 202640
Oct 08, 20264No prior observation