WTS vs AME vs ROP vs PNR

For growth investors, Roper Technologies, Inc.

(ROP) is the stronger pick with 12. 3% revenue growth year-over-year, versus 2. 3% for Pentair plc (PNR). Pentair plc (PNR) offers the better valuation at 19. 4x trailing P/E (14. 4x forward), making it the more compelling value choice. Analysts rate AMETEK, Inc. (AME) a "Buy" — based on 29 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, Pentair plc (PNR) is the cheapest at 19.

4x versus AMETEK, Inc. at 36. 3x. On forward P/E, Pentair plc is actually cheaper at 14. 4x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Watts Water Technologies, Inc. wins at 1. 01x versus AMETEK, Inc. 's 2. 56x — a reasonable growth-adjusted valuation.

Over the past 5 years, Watts Water Technologies, Inc.

(WTS) delivered a total return of +119. 0%, compared to -19. 5% for Roper Technologies, Inc. (ROP). Over 10 years, the gap is even starker: WTS returned +457. 2% versus ROP's +109. 8%. 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), Roper Technologies, Inc.

(ROP) is the lower-risk stock at 0. 39β versus Pentair plc's 1. 21β — meaning PNR is approximately 208% more volatile than ROP relative to the S&P 500. On balance sheet safety, Watts Water Technologies, Inc. (WTS) carries a lower debt/equity ratio of 10% versus 47% for Roper Technologies, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Roper Technologies, Inc.

(ROP) is pulling ahead at 12. 3% versus 2. 3% for Pentair plc (PNR). On earnings-per-share growth, the picture is similar: Watts Water Technologies, Inc. grew EPS 17. 0% year-over-year, compared to -1. 0% for Roper Technologies, Inc.. Over a 3-year CAGR, ROP leads at 13. 7% 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 14. 0% for Watts Water Technologies, Inc. — meaning it keeps 20. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ROP leads at 28. 3% versus 19. 3% for WTS. At the gross margin level — before operating expenses — ROP leads at 69. 2%, 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, Watts Water Technologies, Inc. (WTS) is the more undervalued stock at a PEG of 1. 01x versus AMETEK, Inc. 's 2. 56x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Pentair plc (PNR) trades at 14. 4x forward P/E versus 28. 6x for AMETEK, Inc. — 14. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for PNR: 47. 8% to $113. 56.

All stocks in this comparison pay dividends.

Pentair plc (PNR) offers the highest yield at 1. 3%, versus 0. 5% for AMETEK, Inc. (AME).

For long-horizon retirement investors, Roper Technologies, Inc.

(ROP) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 39), 1. 0% yield, +109. 8% 10Y return). Both have compounded well over 10 years (ROP: +109. 8%, PNR: +121. 3%), 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.