CSL vs IBP vs BLDR vs AWI

For growth investors, Armstrong World Industries, Inc.

(AWI) is the stronger pick with 12. 1% revenue growth year-over-year, versus -7. 4% for Builders FirstSource, Inc. (BLDR). Builders FirstSource, Inc. (BLDR) offers the better valuation at 20. 4x trailing P/E (14. 1x forward), making it the more compelling value choice. Analysts rate Carlisle Companies Incorporated (CSL) a "Buy" — based on 26 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, Builders FirstSource, Inc.

(BLDR) is the cheapest at 20. 4x versus Armstrong World Industries, Inc. at 23. 3x. On forward P/E, Builders FirstSource, Inc. is actually cheaper at 14. 1x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Carlisle Companies Incorporated wins at 0. 71x versus Builders FirstSource, Inc. 's 1. 78x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Carlisle Companies Incorporated (CSL) delivered a total return of +95.

1%, compared to +51. 8% for Builders FirstSource, Inc. (BLDR). Over 10 years, the gap is even starker: IBP returned +650. 1% versus CSL's +277. 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), Armstrong World Industries, Inc.

(AWI) is the lower-risk stock at 0. 82β versus Builders FirstSource, Inc. 's 1. 65β — meaning BLDR is approximately 102% more volatile than AWI relative to the S&P 500. On balance sheet safety, Armstrong World Industries, Inc. (AWI) carries a lower debt/equity ratio of 59% versus 160% for Carlisle Companies Incorporated — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Armstrong World Industries, Inc.

(AWI) is pulling ahead at 12. 1% versus -7. 4% for Builders FirstSource, Inc. (BLDR). On earnings-per-share growth, the picture is similar: Armstrong World Industries, Inc. grew EPS 17. 6% year-over-year, compared to -57. 1% for Builders FirstSource, Inc.. Over a 3-year CAGR, AWI leads at 9. 5% 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.

Armstrong World Industries, Inc.

(AWI) is the more profitable company, earning 19. 0% net margin versus 2. 9% for Builders FirstSource, Inc. — meaning it keeps 19. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AWI leads at 26. 6% versus 5. 2% for BLDR. At the gross margin level — before operating expenses — AWI leads at 40. 6%, 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, Carlisle Companies Incorporated (CSL) is the more undervalued stock at a PEG of 0. 71x versus Builders FirstSource, Inc. 's 1. 78x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Builders FirstSource, Inc. (BLDR) trades at 14. 1x forward P/E versus 19. 9x for Armstrong World Industries, Inc. — 5. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for BLDR: 38. 3% to $109. 92.

In this comparison, IBP (1.

5% yield), CSL (1. 2% yield), AWI (0. 8% yield) pay a dividend. BLDR does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Armstrong World Industries, Inc.

(AWI) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 82), 0. 8% yield, +330. 4% 10Y return). Builders FirstSource, Inc. (BLDR) carries a higher beta of 1. 65 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (AWI: +330. 4%, BLDR: +614. 8%), 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.

These companies operate in different sectors (CSL (Industrials) and IBP (Consumer Cyclical) and BLDR (Industrials) and AWI (Industrials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

CSL, IBP, AWI pay a dividend while BLDR does not, making them suitable for different income and tax situations. 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.