DCI vs CAT

For growth investors, Caterpillar Inc.

(CAT) is the stronger pick with 4. 3% revenue growth year-over-year, versus 2. 9% for Donaldson Company, Inc. (DCI). Donaldson Company, Inc. (DCI) offers the better valuation at 28. 7x trailing P/E (22. 0x forward), making it the more compelling value choice. Analysts rate Caterpillar Inc. (CAT) a "Buy" — based on 53 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, Donaldson Company, Inc.

(DCI) is the cheapest at 28. 7x versus Caterpillar Inc. at 49. 2x. On forward P/E, Donaldson Company, Inc. is actually cheaper at 22. 0x. 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 Donaldson Company, Inc. 's 2. 50x — a reasonable growth-adjusted valuation.

Over the past 5 years, Caterpillar Inc.

(CAT) delivered a total return of +301. 9%, compared to +44. 3% for Donaldson Company, Inc. (DCI). Over 10 years, the gap is even starker: CAT returned +1223% versus DCI's +198. 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), Donaldson Company, Inc.

(DCI) is the lower-risk stock at 0. 97β versus Caterpillar Inc. 's 1. 54β — meaning CAT is approximately 58% more volatile than DCI relative to the S&P 500. On balance sheet safety, Donaldson Company, Inc. (DCI) carries a lower debt/equity ratio of 50% 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 2. 9% for Donaldson Company, Inc. (DCI). On earnings-per-share growth, the picture is similar: Donaldson Company, Inc. grew EPS -9. 8% year-over-year, compared to -14. 6% for Caterpillar Inc.. Over a 3-year CAGR, CAT leads at 4. 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.

Caterpillar Inc.

(CAT) is the more profitable company, earning 13. 1% net margin versus 9. 9% for Donaldson Company, 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 15. 1% for DCI. At the gross margin level — before operating expenses — DCI leads at 34. 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, Caterpillar Inc. (CAT) is the more undervalued stock at a PEG of 1. 43x versus Donaldson Company, Inc. 's 2. 50x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Donaldson Company, Inc. (DCI) trades at 22. 0x forward P/E versus 40. 1x for Caterpillar Inc. — 18. 1x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for DCI: 17. 7% to $103. 20.

All stocks in this comparison pay dividends.

Donaldson Company, Inc. (DCI) offers the highest yield at 1. 2%, 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). Both have compounded well over 10 years (CAT: +1223%, DCI: +198. 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.