Shares of Builders FirstSource fell 8.1% to 67.71 on 2026-07-29, extending a bruising run — six months: -42.3%, 12 months: -50.1%, 24 months: -56.1%.
That price move is a tidy summary of the tension under the hood: the company appears inexpensive on headline multiples, while the reported operating trends have weakened in recent years.
On valuation, the math is blunt. P/E 17.4x. EV/sales 0.5x. Earnings yield +5.7%, cash-flow yield +16.1%. The filing also flags a peer-picture discount: P/E vs peer median -12.5%, EV/sales vs peers -68.0%. On the balance sheet the filing lists market cap 7.6B and enterprise value 7.4B; net debt/cash not disclosed.
But the operating track record is a very different chart. Revenue rose to 19.9B in 2021 and peaked at 22.7B in 2022, before sliding to 17.1B (2023), 16.4B (2024) and 15.2B (2025). The latest annual revenue change was -7.4% year over year.
Profitability has followed the top line down. Operating margin was 16.6% in 2022; it fell to 5.2% in 2025. Net margin fell from 12.1% (2022) to 2.9% (2025). In the latest year operating margin changed -4.6 percentage points and net margin changed -3.7 percentage points.
So: low multiples on a smaller, less-profitable company. Both elements are reflected in market pricing.
There are counterweights. The filing shows operating cash flow covered net income at 2.79x in the latest annual period — a measure that says the company is still generating cash relative to accounting earnings. That cash yield (16.1%) is one reason some investors may see value even while sales and margins compress.
The company’s own scenario math makes the tradeoffs explicit. Over the two-year mechanical (not-a-forecast) scenarios the range is wide: a bull revenue CAGR of +12.2% with an exit P/E of 19.9x, a base revenue CAGR of -12.6% with exit P/E 17.4x, and a bear revenue CAGR of -18.8% with exit P/E 12.2x. The filing calls the bull-to-bear spread enormous (~636 points), and notes that spread is driven mostly by the exit multiple the market assigns.
The exit multiple is a key assumption. The company's scenarios show outcomes are highly sensitive to that assumption: a higher exit multiple makes the valuation appear more favorable, while a lower multiple amplifies the effects of declining revenue and margins.
The recent one-day move is not the whole story: the shares have been repricing alongside two years of shrinking revenue and sliding margins, even as cash flow coverage and depressed multiples present a different perspective. Both sides are visible in the filing; the gap between them is what the market is squaring up now.
All figures from the company's annual filings; revenue, margin and valuation figures quoted as reported.