ROCK vs TREX

For growth investors, Trex Company, Inc.

(TREX) is the stronger pick with 2. 0% revenue growth year-over-year, versus -13. 2% for Gibraltar Industries, Inc. (ROCK). Gibraltar Industries, Inc. (ROCK) offers the better valuation at 11. 7x trailing P/E (9. 5x forward), making it the more compelling value choice. Analysts rate Gibraltar Industries, Inc. (ROCK) a "Buy" — based on 5 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Gibraltar Industries, Inc.

(ROCK) is the cheapest at 11. 7x versus Trex Company, Inc. at 22. 4x. On forward P/E, Gibraltar Industries, Inc. is actually cheaper at 9. 5x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Gibraltar Industries, Inc. wins at 0. 89x versus Trex Company, Inc. 's 7. 30x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Gibraltar Industries, Inc.

(ROCK) delivered a total return of -54. 2%, compared to -62. 4% for Trex Company, Inc. (TREX). Over 10 years, the gap is even starker: TREX returned +247. 6% versus ROCK's +29. 4%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Trex Company, Inc.

(TREX) is the lower-risk stock at 1. 47β versus Gibraltar Industries, Inc. 's 1. 59β — meaning ROCK is approximately 8% more volatile than TREX relative to the S&P 500. On balance sheet safety, Gibraltar Industries, Inc. (ROCK) carries a lower debt/equity ratio of 11% versus 22% for Trex Company, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Trex Company, Inc.

(TREX) is pulling ahead at 2. 0% versus -13. 2% for Gibraltar Industries, Inc. (ROCK). On earnings-per-share growth, the picture is similar: Trex Company, Inc. grew EPS -14. 8% year-over-year, compared to -27. 1% for Gibraltar Industries, Inc.. Over a 3-year CAGR, TREX leads at 2. 0% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Trex Company, Inc.

(TREX) is the more profitable company, earning 16. 2% net margin versus 8. 6% for Gibraltar Industries, Inc. — meaning it keeps 16. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: TREX leads at 22. 0% versus 10. 8% for ROCK. At the gross margin level — before operating expenses — TREX leads at 39. 2%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Gibraltar Industries, Inc. (ROCK) is the more undervalued stock at a PEG of 0. 89x versus Trex Company, Inc. 's 7. 30x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Gibraltar Industries, Inc. (ROCK) trades at 9. 5x forward P/E versus 24. 4x for Trex Company, Inc. — 15. 0x cheaper on a one-year earnings basis.

None of the stocks in this comparison currently pay a material dividend.

All are effectively zero-yield and should be held for capital appreciation rather than income.

For long-horizon retirement investors, Trex Company, Inc.

(TREX) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+247. 6% 10Y return). Gibraltar Industries, Inc. (ROCK) carries a higher beta of 1. 59 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (TREX: +247. 6%, ROCK: +29. 4%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Industrials sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: ROCK is a small-cap deep-value stock; TREX is a small-cap quality compounder stock. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.