BLDR Open Interest
Builders FirstSource Inc (BLDR) had 53.34K open option contracts as of Nov 4, 2026: 36.38K calls and 16.96K puts. Open interest rose 13.2% over the past four weeks, and is BLDR's highest level in 4 weeks. The put/call open interest ratio is 0.47, so calls outnumber puts.
Open Interest by Strike
Showing results for BLDR, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for BLDR, 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 BLDR, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for BLDR, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for BLDR, all expirations, calls & puts. View full history
BLDR 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 BLDR have?
Builders FirstSource had 53.34K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 49.4K contracts.
Is BLDR open interest rising or falling?
Open interest rose 13.2% over the past four weeks, and is BLDR's highest level in 4 weeks. It was 47.13K contracts on Oct 7, 2026. See the BLDR open interest history for a longer view.
What is the BLDR put/call open interest ratio?
The Builders FirstSource put/call open interest ratio was 0.47 as of Nov 4, 2026. Four weeks earlier it was 0.53.
What is Builders FirstSource Inc?
Builders FirstSource Inc is a manufacturer and supplier of building materials.