Builders Firstsource Inc
Builders Firstsource Inc (BLDR) Options Open Interest
BLDR options open interest is 41,522 contracts. The 2-week average daily volume is 2,370 contracts across the chain.
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Monitoring BLDR open interest helps you see where real money is positioned on Builders Firstsource Inc's options and which strikes are attracting the most commitment from traders. Builders Firstsource Inc's open interest reflects the total number of outstanding contracts that have not been closed or exercised, making it a powerful gauge of liquidity, conviction, and potential support and resistance zones. Use our scanner to monitor BLDR options open interest in real time and find the strikes that matter.
Open interest is distinct from volume: volume counts how many contracts are traded in a session, while open interest counts how many remain open at the end of the day. Rising BLDR options open interest alongside rising volume suggests new positions are being built, while falling open interest signals positions are being closed. Heavy open interest at specific strikes often acts as a magnet near expiration and can hint at where dealers and large traders expect Builders Firstsource Inc to settle.
Builders FirstSource, Inc., together with its subsidiaries, manufactures and supplies building materials, manufactured components, and construction services to professional homebuilders, sub-contractors, remodelers, and consumers in the United States. It offers lumber and lumber sheet goods comprising dimensional lumber, plywood, and oriented strand board products that are used in on-site house framing; manufactured products, such as wood floor and roof trusses, steel roof trusses, wall panels, stairs, and engineered wood products; and windows, and interior and exterior door units, as well as interior and exterior trims and custom products under the Synboard brand name.
The company also offers gypsum, roofing, and insulation products, including wallboards, ceilings, joint treatments, and finishes; and siding, metal, and concrete products, such as vinyl, composite, and wood siding products, as well as exterior trims, other exteriors, metal studs, and cement products. In addition, it provides other building products and services, such as cabinets and hardware, as well as turn-key framing, shell construction, design assistance, and professional installation services. The company was formerly known as BSL Holdings, Inc. and changed its name to Builders FirstSource, Inc. in October 1999. Builders FirstSource, Inc. was founded in 1998 and is based in Dallas, Texas.
Pin risk into expiration, dealer positioning, liquidity checks for large orders — all of it starts with knowing where BLDR open interest is concentrated. Our scanner maps Builders Firstsource Inc's open interest across every strike and expiry, flags unusual buildups, and lets you drill into the contracts that institutional money is actually holding. Trade Builders Firstsource Inc's options open interest as the signal it is, not as an afterthought.
| 75.00 | — | 0.25 | 0.25 | 60% | +0.0679 | 915 |
| 70.00 | 0.25 | 0.50 | 0.38 | 51% | +0.1086 | 508 |
| 60.00 | 2.75 | 3.50 | 3.13 | 58% | +0.4973 | 483 |
| 65.00 | 1.10 | 1.40 | 1.25 | 54% | +0.2717 | 360 |
| 55.00 | 5.60 | 6.40 | 6.00 | 61% | +0.7171 | 217 |
| 55.00 | 1.15 | 1.40 | 1.28 | 52% | -0.2585 | 1,377 |
| 70.00 | 10.40 | 11.40 | 10.90 | 45% | -0.9199 | 704 |
| 65.00 | 6.30 | 7.60 | 6.95 | 55% | -0.7264 | 581 |
| 60.00 | 3.20 | 4.80 | 4.00 | 62% | -0.4995 | 358 |
| 50.00 | 0.25 | 0.60 | 0.43 | 57% | -0.1008 | 257 |
As of September 23, 2026
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