MLM vs EXP

For growth investors, Martin Marietta Materials, Inc.

(MLM) is the stronger pick with 0. 1% revenue growth year-over-year, versus 0. 1% for Eagle Materials Inc. (EXP). Eagle Materials Inc. (EXP) offers the better valuation at 15. 8x trailing P/E (16. 8x forward), making it the more compelling value choice. Analysts rate Martin Marietta Materials, Inc. (MLM) a "Buy" — based on 40 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, Eagle Materials Inc.

(EXP) is the cheapest at 15. 8x versus Martin Marietta Materials, Inc. at 32. 7x. On forward P/E, Eagle Materials Inc. is actually cheaper at 16. 8x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Eagle Materials Inc. wins at 0. 32x versus Martin Marietta Materials, Inc. 's 3. 07x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Martin Marietta Materials, Inc.

(MLM) delivered a total return of +69. 0%, compared to +53. 8% for Eagle Materials Inc. (EXP). Over 10 years, the gap is even starker: MLM returned +259. 4% versus EXP's +201. 7%. 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), Martin Marietta Materials, Inc.

(MLM) is the lower-risk stock at 0. 87β versus Eagle Materials Inc. 's 1. 29β — meaning EXP is approximately 47% more volatile than MLM relative to the S&P 500. On balance sheet safety, Martin Marietta Materials, Inc. (MLM) carries a lower debt/equity ratio of 53% versus 88% for Eagle Materials Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Martin Marietta Materials, Inc.

(MLM) is pulling ahead at 0. 1% versus 0. 1% for Eagle Materials Inc. (EXP). On earnings-per-share growth, the picture is similar: Eagle Materials Inc. grew EPS 1. 2% year-over-year, compared to -42. 0% for Martin Marietta Materials, Inc.. Over a 3-year CAGR, EXP leads at 6. 7% 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.

Eagle Materials Inc.

(EXP) is the more profitable company, earning 20. 5% net margin versus 17. 4% for Martin Marietta Materials, Inc. — meaning it keeps 20. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: EXP leads at 26. 5% versus 23. 3% for MLM. At the gross margin level — before operating expenses — MLM leads at 30. 0%, 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, Eagle Materials Inc. (EXP) is the more undervalued stock at a PEG of 0. 32x versus Martin Marietta Materials, Inc. 's 3. 07x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Eagle Materials Inc. (EXP) trades at 16. 8x forward P/E versus 31. 5x for Martin Marietta Materials, Inc. — 14. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for MLM: 13. 0% to $695. 30.

All stocks in this comparison pay dividends.

Martin Marietta Materials, Inc. (MLM) offers the highest yield at 0. 5%, versus 0. 5% for Eagle Materials Inc. (EXP).

For long-horizon retirement investors, Martin Marietta Materials, Inc.

(MLM) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 87), 0. 5% yield, +259. 4% 10Y return). Both have compounded well over 10 years (MLM: +259. 4%, EXP: +201. 7%), 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 Basic Materials sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: MLM is a mid-cap quality compounder stock; EXP is a small-cap deep-value stock. MLM pays a dividend while EXP 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.