BLDR vs QXO: Which Is the Better Buy in 2026?
Last updated August 2026
Short answer
QXO is the larger of the two ($13.80B market cap): the incumbent the market prices for continued execution (18.27x forward earnings, beta 2.20). BLDR is the smaller challenger ($7.15B), cheaper on forward earnings (14.45x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
BLDR vs QXO: the tie-breaker metrics
Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | BLDR | QXO | What it tells you |
|---|---|---|---|
| Market cap | $7.15B | $13.80B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 14.45 | 18.27 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Beta | 1.42 | 2.20 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 2% of range | 1% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 1.78 | 1.04 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: BLDR is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.
Before you buy: how BLDR and QXO affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. BLDR and QXO share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined BLDR and QXO exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does Builders FirstSource (BLDR) do?
Builders FirstSource (BLDR) is the largest US supplier of building materials, manufactured components, and construction services to professional homebuilders, remodelers, and contractors. It distributes lumber and a broad range of building products, and increasingly manufactures and sells higher-value value-added products: pre-assembled trusses, wall panels, millwork, doors, windows, and engineered components that save builders time and labor on the job site. The company operates a large network of distribution and manufacturing locations across the United States, giving it scale, local density, and purchasing power. Its results are tied to US residential construction, both new single-family and multifamily building and repair-and-remodel activity, which depend on housing demand, interest rates, and homebuilder confidence. Builders FirstSource has grown substantially through acquisitions, consolidating a fragmented industry, and uses strong free cash flow for aggressive share buybacks. Headquartered in Irving, Texas, it is a large-cap, cyclical building-products company whose value-added manufacturing mix and scale differentiate it from pure commodity distributors.
What does QXO (QXO) do?
QXO, Inc. is a distributor of building products, meaning it buys roofing, waterproofing, insulation, lumber-related materials and other construction supplies in bulk and sells them through a branch network to contractors, builders and trade professionals. Like most distribution businesses, it makes money on the spread between purchase and sale prices, on logistics and on the convenience and credit it extends to a fragmented base of customers who need many products delivered reliably. Its 2025 acquisition of Beacon Roofing Supply made it the largest publicly traded distributor of roofing and complementary products in the United States, and management is layering technology, pricing tools and operational discipline on top of that scale.
BLDR vs QXO: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- BLDR drivers: Scale and consolidation; Value-added product mix.
- QXO drivers: The Beacon platform and scale; Acquisitive consolidation of a fragmented market.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Builders FirstSource is highly cyclical and tied to US housing: rising interest rates, falling affordability, or a construction slowdown reduce building activity and hit volumes and pricing. For QXO, qXO is an early roll-up, so the risks are concentrated and real.
BLDR or QXO: which should you pick?
Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick BLDR if you believe its drivers more; QXO if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the BLDR and QXO guides.
BLDR vs QXO: the full fundamentals
BLDR. Builders FirstSource trades at a cyclical multiple that reflects its leverage to US housing. The valuation balances strong free cash flow, aggressive buybacks, and a higher-margin value-added mix against the volatility of construction volumes and lumber prices. Multiples tend to compress when housing sentiment weakens and expand when building activity and homebuilder confidence improve.
QXO. Reading an early roll-up is different from reading a mature distributor. Reported revenue jumps as acquisitions close, so pro-forma or full-year figures that include a deal for only part of the year understate the run-rate, and management often points to combined-company revenue and adjusted EBITDA that assume pending deals are done. GAAP results can show losses from deal, financing and integration costs even when the underlying operations generate positive adjusted EBITDA, so it helps to watch adjusted EBITDA, leverage relative to that EBITDA, and how each deal is funded between cash, debt and stock. The stock typically trades at a premium to the assets it owns because investors are paying for the platform and the expectation of future dealmaking, which makes execution and the pace of accretive acquisitions the things that matter most.
Headline figures (approximate, early 2026): BLDR shows revenue (ttm) ~$16-17 billion, operating margin ~low-double-digit percent (cyclical), net income (ttm) ~$1 billion, p/e (ttm) ~15-20x (cyclical); QXO shows net sales (fy2025) About $6.84 billion (Beacon from late April 2025), adjusted ebitda (fy2025) About $647.8 million, a 9.5% margin, gaap loss per share (fy2025) About $(0.63); adjusted diluted EPS about $0.34, total debt (dec 31, 2025) About $3.10 billion ($2.25B notes plus $850M term loan).
The bottom line: BLDR vs QXO
BLDR and QXO are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined BLDR and QXO exposure against your real portfolio. It is not an investment adviser.
Wondering how BLDR or QXO fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in Builders FirstSource with AI
Connect the broker you already use and ask Walnut's AI how BLDR fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between BLDR and QXO?
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Builders FirstSource (BLDR) is the largest US supplier of building materials, manufactured components, and construction services to professional homebuilders, remodelers, and contractors. QXO, Inc. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is BLDR or QXO the better stock?
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Neither is universally better. QXO is the larger incumbent; BLDR is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, BLDR or QXO?
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On forward P/E (as of August 2026), BLDR trades at 14.45x and QXO at 18.27x, so BLDR is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both BLDR and QXO?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of BLDR vs QXO?
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BLDR: Builders FirstSource is highly cyclical and tied to US housing: rising interest rates, falling affordability, or a construction slowdown reduce building activity and hit volumes and pricing. Lumber and commodity prices are volatile and pass through to revenue, so periods of falling lumber prices can deflate the top line even if volumes hold. The repair-and-remodel and new-construction markets can soften together in a downturn. Acquisition-driven growth carries integration risk and adds debt. Competition from other distributors and from builders sourcing directly persists. The stock is volatile and sensitive to housing-market sentiment, mortgage rates, and the broader economic cycle, and a sharp housing downturn would pressure earnings. QXO: QXO is an early roll-up, so the risks are concentrated and real. Each acquisition carries integration risk, and stitching many distributors onto common systems while delivering promised synergies is operationally hard. The deal pace is funded with a mix of debt and equity, which adds leverage and dilutes existing shareholders, and rising rates raise the cost of that capital. The underlying business is tied to construction, repair-and-remodel and housing activity, all of which are cyclical and can fall sharply in a downturn. Execution is everything in a consolidation strategy, and a single poorly integrated or overpriced deal can hurt. Finally, expectations are lofty: the stock prices in years of successful dealmaking and a repeat of Jacobs's past success, so any stumble or slowdown in M&A can weigh heavily on the shares.
Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell BLDR or QXO; figures are approximate and dated (as of August 2026). Verify current data before investing.