IEX vs XYL 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. 9x trailing P/E (14. 8x forward), making it the more compelling value choice. Analysts rate Roper Technologies, Inc. (ROP) a "Buy" — based on 23 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.

9x versus IDEX Corporation at 33. 5x. On forward P/E, Pentair plc is actually cheaper at 14. 8x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Xylem Inc. wins at 0. 91x versus IDEX Corporation's 4. 77x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Pentair plc (PNR) delivered a total return of +23.

0%, compared to -17. 5% for Roper Technologies, Inc. (ROP). Over 10 years, the gap is even starker: XYL returned +204. 7% versus ROP's +115. 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), Roper Technologies, Inc.

(ROP) is the lower-risk stock at 0. 43β versus Pentair plc's 1. 22β — meaning PNR is approximately 186% more volatile than ROP relative to the S&P 500. On balance sheet safety, Xylem Inc. (XYL) carries a lower debt/equity ratio of 17% 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: Xylem Inc. grew EPS 7. 4% year-over-year, compared to -3. 5% for IDEX Corporation. Over a 3-year CAGR, XYL leads at 17. 8% 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.

Roper Technologies, Inc.

(ROP) is the more profitable company, earning 19. 4% net margin versus 10. 6% for Xylem Inc. — meaning it keeps 19. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ROP leads at 28. 3% versus 13. 5% for XYL. 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, Xylem Inc. (XYL) is the more undervalued stock at a PEG of 0. 91x versus IDEX Corporation's 4. 77x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Pentair plc (PNR) trades at 14. 8x forward P/E versus 25. 5x for IDEX Corporation — 10. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for PNR: 43. 8% to $113. 56.

All stocks in this comparison pay dividends.

Xylem Inc. (XYL) offers the highest yield at 1. 4%, versus 0. 9% for Roper Technologies, Inc. (ROP).

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. 43), 0. 9% yield, +115. 0% 10Y return). Both have compounded well over 10 years (ROP: +115. 0%, PNR: +126. 9%), 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.