Builders FirstSource (BLDR) Options Chain

NYSE: BLDRConsumer DiscretionaryRETAIL: Building MaterialsUSD

52.85-0.96 (-1.78%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $52.85
Put/call ratio (OI): 0.66
Put/call ratio (volume): 7.38
ATM implied volatility: 57.8%
Expected move: ±$10.11
Open interest (C / P): 4.42K / 2.90K

BLDR options summary

The BLDR options chain for the November 20, 2026 expiration lists 19 call and 21 put contracts, with 40 days until expiration. Open interest stands at 4,416 calls and 2,896 puts, a put/call ratio of 0.66, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $55.00 strike is 57.8%, which implies the market expects a move of about ±$10.11 (19.1%) in Builders FirstSource stock by expiration.

The most open interest sits at the $75.00 call (887 contracts) and the $75.00 put (679 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

BLDR options chain · November 20, 2026

BLDR calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
—	—	—	—	—	—	35.00	0.00	0.20	0.10	64.5%	1	12
4	4	72.7%	13.80	13.20	13.90	40.00	0.15	0.50	0.45	59.0%	2	316
—	—	—	—	—	—	45.00	1.05	1.50	1.35	62.1%	96	247
3	100	61.5%	5.60	5.50	6.10	50.00	2.10	3.00	2.80	55.5%	140	484
BLDR $52.85
207	2	60.3%	3.20	3.00	3.70	55.00	4.80	5.50	5.27	55.3%	7	292
596	24	59.8%	1.75	1.60	2.00	60.00	8.60	8.80	8.72	55.7%	11	208
818	18	59.4%	0.90	0.75	1.05	65.00	12.40	13.60	12.28	58.4%	2	304
531	8	59.2%	0.43	0.35	0.50	70.00	16.90	18.30	17.95	60.1%	129	258
887	22	58.1%	0.20	0.10	0.25	75.00	21.80	22.50	22.75	66.6%	272	679
148	3	58.0%	0.12	0.00	0.15	80.00	26.40	28.40	27.76	70.8%	78	96
211	1	65.0%	0.03	0.00	0.15	85.00	30.70	34.00	28.45	75.8%	129	0
193	1	74.4%	0.05	0.05	0.15	90.00	35.00	39.20	32.44	140.3%	125	0
428	2	80.5%	0.20	0.00	0.20	95.00	40.20	44.20	36.68	73.8%	33	0
49	7	83.0%	0.15	0.00	0.15	100.00	45.20	49.10	40.70	50.0%	103	0
14	2	88.3%	0.10	0.00	0.15	105.00	50.00	54.10	41.03	162.3%	101	0
39	5	93.2%	0.24	0.00	0.15	110.00	55.20	59.20	46.05	89.1%	71	0
279	3	97.8%	0.05	0.00	0.15	115.00	60.20	64.20	47.42	93.4%	45	0
0	7	50.0%	1.00	0.00	0.00	120.00	52.40	56.40	52.56	—	15	0
0	1	50.0%	0.30	0.00	0.00	125.00	57.40	61.40	58.73	—	107	0
6	5	110.5%	0.15	0.00	0.15	130.00	62.40	66.40	62.10	—	134	0
3	2	121.9%	0.35	0.00	0.25	135.00	54.80	57.40	64.59	—	—	0

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the BLDR put/call ratio?

For the November 20, 2026 expiration, the BLDR put/call ratio based on open interest is 0.66 (2,896 puts vs 4,416 calls), and 7.38 based on today's volume. A ratio above 1 means more puts than calls.

What is BLDR's implied volatility?

At-the-money implied volatility for BLDR options expiring November 20, 2026 is about 57.8%, an annualized estimate of how much the market expects Builders FirstSource stock to move.

How many BLDR option expiration dates are there?

BLDR has 11 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.