ALSN Open Interest
Allison Transmission Holdings Inc (ALSN) had 3.12K open option contracts as of Nov 4, 2026: 2.48K calls and 636 puts. Open interest rose 20.3% over the past four weeks. The put/call open interest ratio is 0.26, so calls outnumber puts.
Open Interest by Strike
Showing results for ALSN, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for ALSN, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
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| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for ALSN, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for ALSN, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for ALSN, all expirations, calls & puts. View full history
ALSN 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 ALSN have?
Allison Transmission had 3.12K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 2.78K contracts.
Is ALSN open interest rising or falling?
Open interest rose 20.3% over the past four weeks. It was 2.59K contracts on Oct 7, 2026. See the ALSN open interest history for a longer view.
What is the ALSN put/call open interest ratio?
The Allison Transmission put/call open interest ratio was 0.26 as of Nov 4, 2026. Four weeks earlier it was 0.39.
What is Allison Transmission Holdings Inc?
Allison Transmission is the largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles.