EME vs ETN vs PWR vs ROK

For growth investors, Quanta Services, Inc.

(PWR) is the stronger pick with 19. 8% revenue growth year-over-year, versus 1. 0% for Rockwell Automation, Inc. (ROK). EMCOR Group, Inc. (EME) offers the better valuation at 32. 8x trailing P/E (31. 6x forward), making it the more compelling value choice. Analysts rate EMCOR Group, Inc. (EME) 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, EMCOR Group, Inc.

(EME) is the cheapest at 32. 8x versus Quanta Services, Inc. at 110. 4x. On forward P/E, Eaton Corporation plc is actually cheaper at 30. 0x — 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: EMCOR Group, Inc. wins at 0. 50x versus Quanta Services, Inc. 's 3. 33x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Quanta Services, Inc.

(PWR) delivered a total return of +651. 1%, compared to +74. 6% for Rockwell Automation, Inc. (ROK). Over 10 years, the gap is even starker: PWR returned +31. 4% versus ROK's +341. 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), Quanta Services, Inc.

(PWR) is the lower-risk stock at 1. 30β versus EMCOR Group, Inc. 's 1. 64β — meaning EME is approximately 26% more volatile than PWR relative to the S&P 500. On balance sheet safety, Quanta Services, Inc. (PWR) carries a lower debt/equity ratio of 13% versus 98% for Rockwell Automation, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Quanta Services, Inc.

(PWR) is pulling ahead at 19. 8% versus 1. 0% for Rockwell Automation, Inc. (ROK). On earnings-per-share growth, the picture is similar: EMCOR Group, Inc. grew EPS 31. 0% year-over-year, compared to -7. 4% for Rockwell Automation, Inc.. Over a 3-year CAGR, PWR leads at 18. 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.

Eaton Corporation plc (ETN) is the more profitable company, earning 14.

9% net margin versus 3. 6% for Quanta Services, Inc. — meaning it keeps 14. 9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ETN leads at 19. 1% versus 5. 8% for PWR. At the gross margin level — before operating expenses — ROK leads at 48. 1%, 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, EMCOR Group, Inc. (EME) is the more undervalued stock at a PEG of 0. 50x versus Quanta Services, Inc. 's 3. 33x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Eaton Corporation plc (ETN) trades at 30. 0x forward P/E versus 57. 4x for Quanta Services, Inc. — 27. 4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for EME: 0. 8% to $931. 50.

In this comparison, ROK (1.

2% yield), ETN (1. 0% yield), EME (0. 1% yield) pay a dividend. PWR does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Eaton Corporation plc (ETN) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (1.

0% yield, +608. 7% 10Y return). Both have compounded well over 10 years (ETN: +608. 7%, PWR: +31. 4%), 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.

In terms of investment character: EME is a mid-cap high-growth stock; ETN is a mid-cap quality compounder stock; PWR is a mid-cap high-growth stock; ROK is a mid-cap quality compounder stock. ETN, ROK pay a dividend while EME, PWR 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.