ORN vs GVA vs VMC vs MLM vs ACM

For growth investors, Granite Construction Incorporated (GVA) is the stronger pick with 10.

4% revenue growth year-over-year, versus 0. 1% for Martin Marietta Materials, Inc. (MLM). Aecom (ACM) offers the better valuation at 19. 1x trailing P/E (13. 6x forward), making it the more compelling value choice. Analysts rate Orion Group Holdings, Inc. (ORN) a "Buy" — based on 12 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, Aecom (ACM) is the cheapest at 19.

1x versus Orion Group Holdings, Inc. at 237. 3x. On forward P/E, Aecom is actually cheaper at 13. 6x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Vulcan Materials Company wins at 2. 35x versus Martin Marietta Materials, Inc. 's 2. 98x.

Over the past 5 years, Granite Construction Incorporated (GVA) delivered a total return of +259.

7%, compared to +23. 2% for Aecom (ACM). Over 10 years, the gap is even starker: GVA returned +239. 8% versus VMC's +158. 0%. 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), Vulcan Materials Company (VMC) is the lower-risk stock at 0.

81β versus Orion Group Holdings, Inc. 's 1. 88β — meaning ORN is approximately 131% more volatile than VMC relative to the S&P 500. On balance sheet safety, Orion Group Holdings, Inc. (ORN) carries a lower debt/equity ratio of 28% versus 133% for Granite Construction Incorporated — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Granite Construction Incorporated (GVA) is pulling ahead at 10.

4% versus 0. 1% for Martin Marietta Materials, Inc. (MLM). On earnings-per-share growth, the picture is similar: Orion Group Holdings, Inc. grew EPS 232. 8% year-over-year, compared to -42. 0% for Martin Marietta Materials, Inc.. Over a 3-year CAGR, GVA leads at 10. 3% 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.

Martin Marietta Materials, Inc.

(MLM) is the more profitable company, earning 17. 4% net margin versus 0. 3% for Orion Group Holdings, Inc. — meaning it keeps 17. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: MLM leads at 23. 3% versus 1. 4% for ORN. 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, Vulcan Materials Company (VMC) is the more undervalued stock at a PEG of 2. 35x versus Martin Marietta Materials, Inc. 's 2. 98x. Both stocks trade at elevated growth-adjusted valuations, so expected growth needs to materialise. On forward earnings alone, Aecom (ACM) trades at 13. 6x forward P/E versus 37. 8x for Orion Group Holdings, Inc. — 24. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for ACM: 55. 9% to $125. 63.

In this comparison, ACM (1.

2% yield), VMC (0. 7% yield), MLM (0. 6% yield), GVA (0. 3% yield) pay a dividend. ORN does not pay a meaningful dividend and should not be held primarily for income.

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. 6% yield, +237. 1% 10Y return). Orion Group Holdings, Inc. (ORN) carries a higher beta of 1. 88 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (MLM: +237. 1%, ORN: +198. 6%), 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 (ORN (Industrials) and GVA (Industrials) and VMC (Basic Materials) and MLM (Basic Materials) and ACM (Industrials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

VMC, MLM, ACM pay a dividend while ORN, GVA do 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.