BLDR · Builders FirstSource, Inc. · Options Chain

Track BLDR — free

$58.12 +0.44 (+0.76%) At close · Sep 18

S&P 500 member Russell 1000 member Rebalance outlook locked

Market Cap

$6.51B

107.60M

Options Chain

Underlying $58.12 · at close Sep 18, 2026 Options Calculator

Pull option chains with greeks and open interest through the options chain API or MCP →

Positioning

Oct 16, 2026 · 26 days to expiry · 30 contracts · mixed daily-bar sessions · Aug 21, 2026–Sep 18, 2026; 2 unknown

Put / call OI

2.34

Put-heavy positioning

Open interest

4,497

as of Sep 17, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$70.00

$11.88 above spot

ATM implied vol

53.5%

market's expected move

Open interest by strike

Calls Puts

100

105

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Oct 16 26d Nov 20 61d Dec 18 89d Jan 15 117d Feb 19 152d Mar 19 180d May 21 243d Jun 17 270d Sep 17 362d Jan 21 488d Jan 19 852d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
65	30	—	—	$21.30	$25.10	$25.00		—	$0.00	$0.15	—	—	—	—
Call · $35 In the money Daily-bar session Sep 14, 2026 Quote as of 2026-09-18 19:59:50.214 UTC Last $25.00 Breakeven $60.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 65 OI effective date Sep 17, 2026 Model this call Put · $35 Daily-bar session Unknown Quote as of 2026-09-18 19:59:50.213 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
40	4	97.9%	0.942	$17.20	$20.10	$17.35		$0.12	$0.00	$0.20	—	—	1	2
Call · $40 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.252 UTC Last $17.35 Breakeven $57.35 Implied vol 97.9% Delta 0.942 ≈94% ITM Gamma 0.008 Theta -0.038 Vega 0.018 Open interest 40 OI effective date Sep 17, 2026 Model this call Put · $40 Daily-bar session Sep 17, 2026 Quote as of 2026-09-18 19:59:50.212 UTC Last $0.12 Breakeven $39.88 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 17, 2026 Model this put
1	1	67.2%	0.937	$12.50	$14.60	$13.00		$0.12	$0.05	$0.20	-0.035	55.6%	2	36
Call · $45 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:51.876 UTC Last $13.00 Breakeven $58.00 Implied vol 67.2% Delta 0.937 ≈94% ITM Gamma 0.012 Theta -0.029 Vega 0.019 Open interest 1 OI effective date Sep 17, 2026 Model this call Put · $45 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:50.230 UTC Last $0.12 Breakeven $44.88 Implied vol 55.6% Delta -0.035 ≈3% ITM Gamma 0.009 Theta -0.013 Vega 0.012 Open interest 36 OI effective date Sep 17, 2026 Model this put
5	6	68.2%	0.825	$8.10	$10.60	$9.13		$0.65	$0.50	$0.80	-0.137	56.4%	181	195
Call · $50 In the money Daily-bar session Sep 17, 2026 Quote as of 2026-09-18 19:59:43.252 UTC Last $9.13 Breakeven $59.13 Implied vol 68.2% Delta 0.825 ≈82% ITM Gamma 0.024 Theta -0.057 Vega 0.04 Open interest 5 OI effective date Sep 17, 2026 Model this call Put · $50 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.577 UTC Last $0.65 Breakeven $49.35 Implied vol 56.4% Delta -0.137 ≈14% ITM Gamma 0.025 Theta -0.036 Vega 0.034 Open interest 195 OI effective date Sep 17, 2026 Model this put
11	1	61.4%	0.669	$5.10	$6.00	$4.50		$1.96	$1.10	$2.15	-0.307	49.6%	336	919
Call · $55 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.406 UTC Last $4.50 Breakeven $59.50 Implied vol 61.4% Delta 0.669 ≈67% ITM Gamma 0.038 Theta -0.07 Vega 0.056 Open interest 11 OI effective date Sep 17, 2026 Model this call Put · $55 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.720 UTC Last $1.96 Breakeven $53.04 Implied vol 49.6% Delta -0.307 ≈31% ITM Gamma 0.046 Theta -0.05 Vega 0.055 Open interest 919 OI effective date Sep 17, 2026 Model this put
Underlying $58.12
64	24	54.8%	0.45	$2.45	$2.85	$2.80		$4.30	$3.90	$4.50	-0.555	52.2%	157	380
Call · $60 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.899 UTC Last $2.80 Breakeven $62.80 Implied vol 54.8% Delta 0.45 ≈45% ITM Gamma 0.047 Theta -0.067 Vega 0.061 Open interest 64 OI effective date Sep 17, 2026 Model this call Put · $60 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.782 UTC Last $4.30 Breakeven $55.70 Implied vol 52.2% Delta -0.555 ≈56% ITM Gamma 0.049 Theta -0.058 Vega 0.061 Open interest 380 OI effective date Sep 17, 2026 Model this put
175	67	58.1%	0.266	$1.10	$1.60	$1.35		$7.90	$7.20	$8.20	-0.768	51%	13	575
Call · $65 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:51.655 UTC Last $1.35 Breakeven $66.35 Implied vol 58.1% Delta 0.266 ≈27% ITM Gamma 0.036 Theta -0.058 Vega 0.051 Open interest 175 OI effective date Sep 17, 2026 Model this call Put · $65 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:58.398 UTC Last $7.90 Breakeven $57.10 Implied vol 51% Delta -0.768 ≈77% ITM Gamma 0.039 Theta -0.041 Vega 0.047 Open interest 575 OI effective date Sep 17, 2026 Model this put
365	69	58.1%	0.135	$0.45	$0.70	$0.50		$10.70	$10.60	$12.80	-0.991	28.8%	3	704
Call · $70 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.899 UTC Last $0.50 Breakeven $70.50 Implied vol 58.1% Delta 0.135 ≈13% ITM Gamma 0.024 Theta -0.038 Vega 0.034 Open interest 365 OI effective date Sep 17, 2026 Model this call Put · $70 In the money Daily-bar session Sep 17, 2026 Quote as of 2026-09-18 19:59:59.960 UTC Last $10.70 Breakeven $59.30 Implied vol 28.8% Delta -0.991 ≈99% ITM Gamma 0.006 Theta 0.005 Vega 0.004 Open interest 704 OI effective date Sep 17, 2026 Model this put
443	2	60.8%	0.07	$0.15	$0.40	$0.20		$17.05	$15.20	$17.20	—	—	12	210
Call · $75 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.899 UTC Last $0.20 Breakeven $75.20 Implied vol 60.8% Delta 0.07 ≈7% ITM Gamma 0.014 Theta -0.025 Vega 0.021 Open interest 443 OI effective date Sep 17, 2026 Model this call Put · $75 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.776 UTC Last $17.05 Breakeven $57.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 210 OI effective date Sep 17, 2026 Model this put
92	16	—	—	$0.00	$0.25	$0.06		$22.02	$19.80	$23.80	-0.962	63.8%	23	129
Call · $80 Daily-bar session Sep 17, 2026 Quote as of 2026-09-18 19:59:50.229 UTC Last $0.06 Breakeven $80.06 Implied vol — Delta — Gamma — Theta — Vega — Open interest 92 OI effective date Sep 17, 2026 Model this call Put · $80 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.577 UTC Last $22.02 Breakeven $57.98 Implied vol 63.8% Delta -0.962 ≈96% ITM Gamma 0.008 Theta -0.007 Vega 0.013 Open interest 129 OI effective date Sep 17, 2026 Model this put
17	1	—	—	$0.00	$0.20	$0.10		$26.31	$24.80	$28.30	—	—	22	—
Call · $85 Daily-bar session Sep 11, 2026 Quote as of 2026-09-18 19:59:50.213 UTC Last $0.10 Breakeven $85.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 17 OI effective date Sep 17, 2026 Model this call Put · $85 In the money Daily-bar session Sep 17, 2026 Quote as of 2026-09-18 19:58:59.571 UTC Last $26.31 Breakeven $58.69 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
16	6	—	—	$0.00	$0.40	$0.06		$28.10	$29.80	$33.80	-0.965	84.7%	80	—
Call · $90 Daily-bar session Sep 10, 2026 Quote as of 2026-09-18 19:59:53.275 UTC Last $0.06 Breakeven $90.06 Implied vol — Delta — Gamma — Theta — Vega — Open interest 16 OI effective date Sep 17, 2026 Model this call Put · $90 In the money Daily-bar session Sep 9, 2026 Quote as of 2026-09-18 19:59:42.588 UTC Last $28.10 Breakeven $61.90 Implied vol 84.7% Delta -0.965 ≈96% ITM Gamma 0.006 Theta -0.01 Vega 0.012 Open interest — OI effective date — Model this put
33	33	—	—	$0.00	$0.40	$0.45		$31.31	$34.80	$38.30	—	—	58	—
Call · $95 Daily-bar session Aug 25, 2026 Quote as of 2026-09-18 19:59:53.275 UTC Last $0.45 Breakeven $95.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 33 OI effective date Sep 17, 2026 Model this call Put · $95 In the money Daily-bar session Sep 1, 2026 Quote as of 2026-09-18 19:59:42.589 UTC Last $31.31 Breakeven $63.69 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
20	20	—	—	$0.00	$0.40	$0.20		$32.48	$39.80	$43.80	—	—	60	—
Call · $100 Daily-bar session Aug 27, 2026 Quote as of 2026-09-18 19:59:59.765 UTC Last $0.20 Breakeven $100.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 20 OI effective date Sep 17, 2026 Model this call Put · $100 In the money Daily-bar session Aug 27, 2026 Quote as of 2026-09-18 19:59:42.587 UTC Last $32.48 Breakeven $67.52 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.05	—		$34.78	$44.80	$48.80	—	—	17	—
Call · $105 Daily-bar session Unknown Quote as of 2026-09-18 13:35:47.258 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $105 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-18 19:58:33.102 UTC Last $34.78 Breakeven $70.22 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Aug 21, 2026–Sep 18, 2026; 2 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1316835 CUSIP 12008R107 13F (30d) 30 filings 19 filers Visit website Investor relations