Stocks / BLDR vs ROCK

BLDR vs ROCK: Which Stock Is the Better Buy?

Builders FirstSource, Inc. and Gibraltar Industries, Inc. side by side — fundamentals from SEC filings, refreshed nightly. Sector: Industrials.

BLDR is the larger company ($7.1B vs $1.1B). On the fundamentals, BLDR grows revenue faster (12.2% vs 1.9%); ROCK earns a higher net margin (8.6% vs 2.9%); ROCK has the stronger return on equity (10.3% vs 10.0%). Both carry 1 potential red flag in the filings. Full numbers below — the stronger figure on each row is in green.

AI verdict — BLDR vs ROCK, read from the filings

The stronger business, the cheaper stock, and the risks — synthesised from both companies’ SEC filings, every figure computed not guessed. Not investment advice.

 Builders FirstSource, Inc. (BLDR)Gibraltar Industries, Inc. (ROCK)
Market cap$7.1B$1.1B
Revenue (latest FY)$15.19B$1.14B
Net income (latest FY)$435.20M$97.56M
Revenue growth (5y CAGR)12.2%1.9%
Net margin2.9%8.6%
Return on equity10.0%10.3%
P/E ratio72.217.9
Dividend yield
Profitable years (of last 10)1010
Positive free cash flowYesYes

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Use the filing period and source shown by each tool before treating two figures as comparable.

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See the full BLDR vs ROCK breakdown

Both companies across 19 years of income statement, balance sheet and cash flow — with ratios, health checks and Ask, the SEC-grounded research assistant. Free, no account needed.

Open BLDR's full financials →   Open ROCK's full financials →

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Frequently asked questions

Which is bigger, BLDR or ROCK?

Builders FirstSource, Inc. is larger by market capitalization — $7.1B versus $1.1B.

Which grows faster, BLDR or ROCK?

Over the last five fiscal years, Builders FirstSource, Inc. grew revenue faster — 12.2%/yr versus 1.9%/yr, computed from SEC-filed statements.

Where does this data come from?

All figures are computed from official SEC filings (10-K), refreshed nightly. This is a data comparison, not investment advice.

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