ACAD Open Interest
Acadia Pharmaceuticals Inc (ACAD) had 44.58K open option contracts as of Nov 4, 2026: 24.04K calls and 20.55K puts. Open interest fell 40.6% over the past four weeks. The put/call open interest ratio is 0.85, so calls outnumber puts.
Open Interest by Strike
Showing results for ACAD, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for ACAD, 2026-11-20(m), calls & puts
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| Put Open Interest Total | |
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Highest Open Interest Options
Showing results for ACAD, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for ACAD, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for ACAD, all expirations, calls & puts. View full history
ACAD Open Interest FAQ
What is open interest?
Open interest is the number of option contracts that are open and not yet closed, exercised, or expired. The Options Clearing Corporation calculates it once a day from the previous day's trades, and it is published before the market opens.
How much open interest does ACAD have?
Acadia Pharmaceuticals had 44.58K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 55.46K contracts.
Is ACAD open interest rising or falling?
Open interest fell 40.6% over the past four weeks. It was 75.07K contracts on Oct 7, 2026. See the ACAD open interest history for a longer view.
What is the ACAD put/call open interest ratio?
The Acadia Pharmaceuticals put/call open interest ratio was 0.85 as of Nov 4, 2026. Four weeks earlier it was 0.54.
What is Acadia Pharmaceuticals Inc?
Acadia Pharmaceuticals Inc is a biopharmaceutical company focused on turning scientific promise into making a difference for underserved neurological and rare disease communities around the world.