RRX vs AME vs DHR vs ROK

For growth investors, AMETEK, Inc.

(AME) is the stronger pick with 6. 6% revenue growth year-over-year, versus -1. 6% for Regal Rexnord Corporation (RRX). Danaher Corporation (DHR) offers the better valuation at 34. 9x trailing P/E (20. 8x forward), making it the more compelling value choice. Analysts rate Regal Rexnord Corporation (RRX) a "Buy" — based on 22 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, Danaher Corporation (DHR) is the cheapest at 34.

9x versus Rockwell Automation, Inc. at 58. 5x. On forward P/E, Regal Rexnord Corporation is actually cheaper at 19. 3x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: AMETEK, Inc. wins at 2. 60x versus Danaher Corporation's 34. 35x.

Over the past 5 years, Rockwell Automation, Inc.

(ROK) delivered a total return of +74. 6%, compared to -21. 1% for Danaher Corporation (DHR). Over 10 years, the gap is even starker: AME returned +423. 4% versus DHR's +219. 3%. 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), AMETEK, Inc.

(AME) is the lower-risk stock at 0. 93β versus Regal Rexnord Corporation's 1. 91β — meaning RRX is approximately 105% more volatile than AME relative to the S&P 500. On balance sheet safety, AMETEK, Inc. (AME) carries a lower debt/equity ratio of 21% versus 98% for Rockwell Automation, Inc. — giving it more financial flexibility in a downturn.

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

(AME) is pulling ahead at 6. 6% versus -1. 6% for Regal Rexnord Corporation (RRX). On earnings-per-share growth, the picture is similar: Regal Rexnord Corporation grew EPS 43. 5% year-over-year, compared to -7. 4% for Rockwell Automation, Inc.. Over a 3-year CAGR, AME leads at 6. 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.

AMETEK, Inc.

(AME) is the more profitable company, earning 20. 0% net margin versus 4. 7% for Regal Rexnord Corporation — meaning it keeps 20. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AME leads at 26. 2% versus 11. 5% for RRX. At the gross margin level — before operating expenses — DHR leads at 60. 9%, 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, AMETEK, Inc. (AME) is the more undervalued stock at a PEG of 2. 60x versus Danaher Corporation's 34. 35x. Both stocks trade at elevated growth-adjusted valuations, so expected growth needs to materialise. On forward earnings alone, Regal Rexnord Corporation (RRX) trades at 19. 3x forward P/E versus 36. 9x for Rockwell Automation, Inc. — 17. 6x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for DHR: 40. 6% to $247. 00.

All stocks in this comparison pay dividends.

Rockwell Automation, Inc. (ROK) offers the highest yield at 1. 2%, versus 0. 5% for AMETEK, Inc. (AME).

For long-horizon retirement investors, AMETEK, Inc.

(AME) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 93), 0. 5% yield, +423. 4% 10Y return). Regal Rexnord Corporation (RRX) carries a higher beta of 1. 91 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (AME: +423. 4%, RRX: +257. 1%), 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 (RRX (Industrials) and AME (Industrials) and DHR (Healthcare) and ROK (Industrials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

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.