FLS Open Interest
Flowserve Corporation (FLS) had 3.34K open option contracts as of Nov 4, 2026: 2.98K calls and 354 puts. Open interest fell 45.2% over the past four weeks. The put/call open interest ratio is 0.12, so calls outnumber puts.
Open Interest by Strike
Showing results for FLS, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for FLS, 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 FLS, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for FLS, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for FLS, all expirations, calls & puts. View full history
FLS 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 FLS have?
Flowserve had 3.34K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 4.41K contracts.
Is FLS open interest rising or falling?
Open interest fell 45.2% over the past four weeks. It was 6.09K contracts on Oct 7, 2026. See the FLS open interest history for a longer view.
What is the FLS put/call open interest ratio?
The Flowserve put/call open interest ratio was 0.12 as of Nov 4, 2026. Four weeks earlier it was 0.11.
What is Flowserve Corporation?
Flowserve Corp is a manufacturer and aftermarket service provider of comprehensive flow control systems.