CMI vs CAT

For growth investors, Caterpillar Inc.

(CAT) is the stronger pick with 4. 3% revenue growth year-over-year, versus -1. 3% for Cummins Inc. (CMI). Cummins Inc. (CMI) offers the better valuation at 34. 9x trailing P/E (27. 2x forward), making it the more compelling value choice. Analysts rate Cummins Inc. (CMI) a "Buy" — based on 51 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, Cummins Inc.

(CMI) is the cheapest at 34. 9x versus Caterpillar Inc. at 49. 2x. On forward P/E, Cummins Inc. is actually cheaper at 27. 2x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Caterpillar Inc. wins at 1. 43x versus Cummins Inc. 's 2. 41x — a reasonable growth-adjusted valuation.

Over the past 5 years, Caterpillar Inc.

(CAT) delivered a total return of +301. 9%, compared to +181. 7% for Cummins Inc. (CMI). Over 10 years, the gap is even starker: CAT returned +1223% versus CMI's +571. 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), Caterpillar Inc.

(CAT) is the lower-risk stock at 1. 54β versus Cummins Inc. 's 1. 57β — meaning CMI is approximately 2% more volatile than CAT relative to the S&P 500. On balance sheet safety, Cummins Inc. (CMI) carries a lower debt/equity ratio of 61% versus 2% for Caterpillar Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Caterpillar Inc.

(CAT) is pulling ahead at 4. 3% versus -1. 3% for Cummins Inc. (CMI). On earnings-per-share growth, the picture is similar: Caterpillar Inc. grew EPS -14. 6% year-over-year, compared to -27. 7% for Cummins Inc.. Over a 3-year CAGR, CMI leads at 6. 2% 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.

Caterpillar Inc.

(CAT) is the more profitable company, earning 13. 1% net margin versus 8. 4% for Cummins Inc. — meaning it keeps 13. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: CAT leads at 16. 6% versus 11. 5% for CMI. At the gross margin level — before operating expenses — CAT leads at 32. 3%, 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, Caterpillar Inc. (CAT) is the more undervalued stock at a PEG of 1. 43x versus Cummins Inc. 's 2. 41x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Cummins Inc. (CMI) trades at 27. 2x forward P/E versus 40. 1x for Caterpillar Inc. — 12. 9x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CAT: -11. 0% to $824. 80.

All stocks in this comparison pay dividends.

Cummins Inc. (CMI) offers the highest yield at 1. 1%, versus 0. 6% for Caterpillar Inc. (CAT).

For long-horizon retirement investors, Caterpillar Inc.

(CAT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (0. 6% yield, +1223% 10Y return). Cummins Inc. (CMI) carries a higher beta of 1. 57 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (CAT: +1223%, CMI: +571. 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 Industrials sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

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.