USLM vs MLM

For growth investors, United States Lime & Minerals, Inc.

(USLM) is the stronger pick with 17. 3% revenue growth year-over-year, versus 0. 1% for Martin Marietta Materials, Inc. (MLM). United States Lime & Minerals, Inc. (USLM) offers the better valuation at 22. 8x trailing P/E (19. 7x forward), making it the more compelling value choice. Analysts rate United States Lime & Minerals, Inc. (USLM) a "Buy" — based on 1 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, United States Lime & Minerals, Inc.

(USLM) is the cheapest at 22. 8x versus Martin Marietta Materials, Inc. at 32. 2x. On forward P/E, United States Lime & Minerals, Inc. is actually cheaper at 19. 7x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: United States Lime & Minerals, Inc. wins at 0. 54x 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, United States Lime & Minerals, Inc.

(USLM) delivered a total return of +270. 7%, compared to +65. 7% for Martin Marietta Materials, Inc. (MLM). Over 10 years, the gap is even starker: USLM returned +921. 7% versus MLM's +259. 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), Martin Marietta Materials, Inc.

(MLM) is the lower-risk stock at 0. 87β versus United States Lime & Minerals, Inc. 's 1. 32β — meaning USLM is approximately 51% more volatile than MLM relative to the S&P 500. On balance sheet safety, United States Lime & Minerals, Inc. (USLM) carries a lower debt/equity ratio of 1% versus 53% for Martin Marietta Materials, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), United States Lime & Minerals, Inc.

(USLM) is pulling ahead at 17. 3% versus 0. 1% for Martin Marietta Materials, Inc. (MLM). On earnings-per-share growth, the picture is similar: United States Lime & Minerals, Inc. grew EPS 23. 2% year-over-year, compared to -42. 0% for Martin Marietta Materials, Inc.. Over a 3-year CAGR, USLM leads at 16. 4% 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.

United States Lime & Minerals, Inc.

(USLM) is the more profitable company, earning 36. 0% net margin versus 17. 4% for Martin Marietta Materials, Inc. — meaning it keeps 36. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: USLM leads at 42. 4% versus 23. 3% for MLM. At the gross margin level — before operating expenses — USLM leads at 48. 8%, 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, United States Lime & Minerals, Inc. (USLM) is the more undervalued stock at a PEG of 0. 54x 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, United States Lime & Minerals, Inc. (USLM) trades at 19. 7x forward P/E versus 31. 5x for Martin Marietta Materials, Inc. — 11. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for USLM: 29. 6% to $138. 00.

All stocks in this comparison pay dividends.

Martin Marietta Materials, Inc. (MLM) offers the highest yield at 0. 5%, versus 0. 2% for United States Lime & Minerals, Inc. (USLM).

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%, USLM: +921. 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: USLM is a small-cap high-growth stock; MLM is a mid-cap quality compounder stock. MLM pays a dividend while USLM 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.