ALGN Open Interest
Align Technology Inc (ALGN) had 37.5K open option contracts as of Nov 4, 2026: 20.7K calls and 16.8K puts. Open interest rose 1.0% over the past four weeks. The put/call open interest ratio is 0.81, so calls outnumber puts.
Open Interest by Strike
Showing results for ALGN, 2026-11-06(w), calls & puts
Open Interest Stats
Showing results for ALGN, 2026-11-06(w), calls & puts
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| Put Open Interest Total | |
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Highest Open Interest Options
Showing results for ALGN, 2026-11-06(w), calls & puts
Open Interest Total by Expiry
Showing results for ALGN, 2026-11-06(w), calls & puts. View all expiries
Open Interest History
Showing daily totals for ALGN, all expirations, calls & puts. View full history
ALGN 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 ALGN have?
Align Technology had 37.5K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 38.65K contracts.
Is ALGN open interest rising or falling?
Open interest rose 1.0% over the past four weeks. It was 37.11K contracts on Oct 7, 2026. See the ALGN open interest history for a longer view.
What is the ALGN put/call open interest ratio?
The Align Technology put/call open interest ratio was 0.81 as of Nov 4, 2026. Four weeks earlier it was 0.70.
What is Align Technology Inc?
Align Technology is the leading manufacturer of clear aligners.