NPO Open Interest
Enpro Inc (NPO) had 2.86K open option contracts as of Nov 4, 2026: 265 calls and 2.59K puts. Open interest rose 222.6% over the past four weeks. The put/call open interest ratio is 9.78, so puts outnumber calls.
Open Interest by Strike
Showing results for NPO, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for NPO, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
|---|---|
| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for NPO, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for NPO, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for NPO, all expirations, calls & puts. View full history
NPO 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 NPO have?
Enpro had 2.86K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 1.74K contracts.
Is NPO open interest rising or falling?
Open interest rose 222.6% over the past four weeks. It was 886 contracts on Oct 7, 2026. See the NPO open interest history for a longer view.
What is the NPO put/call open interest ratio?
The Enpro put/call open interest ratio was 9.78 as of Nov 4, 2026. Four weeks earlier it was 2.74.
What is Enpro Inc?
Enpro Inc formerly EnPro Industries Inc is a United States-based company that designs, develops, manufactures, and markets proprietary engineered industrial products.