FLS vs IR vs IEX 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 Ingersoll Rand Inc. (IR) a "Buy" — based on 15 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 Ingersoll Rand Inc. at 53. 4x. 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: Flowserve Corporation wins at 0. 82x versus IDEX Corporation's 4. 77x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Flowserve Corporation (FLS) delivered a total return of +77.

4%, compared to -17. 5% for Roper Technologies, Inc. (ROP). Over 10 years, the gap is even starker: IR returned +299. 5% versus FLS's +75. 6%. 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 Flowserve Corporation's 1. 69β — meaning FLS is approximately 294% more volatile than ROP relative to the S&P 500. On balance sheet safety, Pentair plc (PNR) carries a lower debt/equity ratio of 42% versus 85% for Flowserve Corporation — 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: Flowserve Corporation grew EPS 23. 4% year-over-year, compared to -29. 6% for Ingersoll Rand 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.

Roper Technologies, Inc.

(ROP) is the more profitable company, earning 19. 4% net margin versus 7. 3% for Flowserve Corporation — 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. 0% for FLS. 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, Flowserve Corporation (FLS) is the more undervalued stock at a PEG of 0. 82x 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.

IDEX Corporation (IEX) offers the highest yield at 1. 3%, versus 0. 1% for Ingersoll Rand Inc. (IR).

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%, IR: +299. 5%), 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.

FLS, IEX, ROP, PNR pay a dividend while IR does 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.