PNR vs. ROK: Pentair vs. Rockwell Automation Stock Comparison

November 11, 2026

How do Pentair (PNR) and Rockwell Automation (ROK) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

Pentair (PNR) and Rockwell Automation (ROK) both fall under the Capital Goods industry group, but PNR is classified in Machinery while ROK is classified in Electrical Equipment.

Company profile comparison for Pentair (PNR) and Rockwell Automation (ROK)
Profile Item	PNR	ROK
Name	Pentair plc	Rockwell Automation Inc.
Country/Region	United Kingdom	United States
GICS Sector	Industrials	Industrials
GICS Industry Group	Capital Goods	Capital Goods
GICS Industry	Machinery	Electrical Equipment
GICS Sub-Industry	Industrial Machinery & Supplies & Components	Electrical Components & Equipment
Market Capitalization	10.88 billion USD	41.82 billion USD
Currency	USD	USD
Exchange	NYSE	NYSE
Listing Date	May 3, 1973	December 31, 1981
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

PNR

ROK

GSPC

Pentair (PNR) vs. Rockwell Automation (ROK), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

Loading price history…

Trailing total returns for Pentair (PNR) and Rockwell Automation (ROK). Returns over one year are annualized.

Calendar-Year Returns

Loading price history…

Calendar-year total returns for Pentair (PNR) and Rockwell Automation (ROK). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Pentair (PNR) and Rockwell Automation (ROK)
Metric	PNR	ROK
Total Return (1Y)	-33.74%	6.19%
Total Return (3Y, Annualized)	6.19%	16.94%
Total Return (5Y, Annualized)	0.13%	4.86%

Risk Profile

Drawdown History

PNR

ROK

GSPC

Pentair (PNR) vs. Rockwell Automation (ROK), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

Loading price history…

Distribution of monthly total returns for Pentair (PNR) and Rockwell Automation (ROK). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for Pentair (PNR) and Rockwell Automation (ROK)
Metric	PNR	ROK
Volatility (1Y, Annualized)	36.79%	34.28%
Beta (5Y)	0.99	1.54
Max Drawdown (5Y)	-53.15%	-45.09%
Avg. Volume (3M)	3.26M	799.28K

Risk-Adjusted Performance

Risk-Return Positioning

PNR and ROK are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Pentair (PNR) and Rockwell Automation (ROK)
Metric	PNR	ROK
Sharpe Ratio (1Y)	-1.03	0.06
Sortino Ratio (1Y)	-1.35	0.07

Profitability

ROE (TTM)

Rockwell Automation (ROK) at 38.73% sits in the top ROE quartile, while Pentair (PNR) at 15.61% is closer to the peer norm — stronger capital efficiency for ROK.

PNR

Capital Goods industry group

15.61%

Max: 40.55%
Q3: 19.29%
PNR: 15.61%
Median: 12.12%
Q1: 4.08%
Min: -17.12%

ROK

Capital Goods industry group

38.73%

Max: 40.55%
ROK: 38.73%
Q3: 19.29%
Median: 12.12%
Q1: 4.08%
Min: -17.12%

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their ROE against the Capital Goods industry group benchmark.

Net Margin (TTM)

For every dollar of sales, both Pentair (PNR) at 15.44% and Rockwell Automation (ROK) at 15.68% retain more as net profit than most peers, landing in the top net margin quartile of their industries.

PNR

Capital Goods industry group

15.44%

Max: 27.47%
PNR: 15.44%
Q3: 12.10%
Median: 6.30%
Q1: 1.40%
Min: -12.89%

ROK

Capital Goods industry group

15.68%

Max: 27.47%
ROK: 15.68%
Q3: 12.10%
Median: 6.30%
Q1: 1.40%
Min: -12.89%

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their net margin against the Capital Goods industry group benchmark.

Operating Margin (TTM)

Pentair (PNR) at 21.90% operates in the top operating margin quartile, ahead of Rockwell Automation (ROK) at 14.75%, which runs around its industry’s norm.

PNR

Capital Goods industry group

21.90%

Max: 36.60%
PNR: 21.90%
Q3: 18.33%
Median: 11.12%
Q1: 5.14%
Min: -12.63%

ROK

Capital Goods industry group

14.75%

Max: 36.60%
Q3: 18.33%
ROK: 14.75%
Median: 11.12%
Q1: 5.14%
Min: -12.63%

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their operating margin against the Capital Goods industry group benchmark.

Profitability Metrics

Profitability metrics for Pentair (PNR) and Rockwell Automation (ROK)
Metric	PNR	ROK
ROE (TTM)	15.61%	38.73%
ROA (TTM)	7.91%	9.32%
Net Margin (TTM)	15.44%	15.68%
Operating Margin (TTM)	21.90%	14.75%
Gross Margin (TTM)	40.17%	48.95%

Growth

Revenue Growth

Only one side can be read here: Pentair (PNR) reports revenue growth of 2.28%, ranked against its industry; Rockwell Automation (ROK) has no revenue growth figure this period.

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their Revenue Growth across different time periods.

EPS Growth

Rockwell Automation (ROK) at 63.49% sits in the top EPS growth quartile, while Pentair (PNR) at 5.88% is closer to the peer norm — faster per-share earnings growth for ROK.

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Pentair (PNR) and Rockwell Automation (ROK)
Metric	PNR	ROK
Revenue Growth (YoY)	2.28%	--
Revenue Growth (3Y CAGR)	0.44%	--
EPS Growth (YoY)	5.88%	63.49%
EPS Growth (3Y CAGR)	10.94%	1.62%

Financial Strength

Current Ratio (MRQ)

Both Pentair (PNR) at 1.47 and Rockwell Automation (ROK) at 2.11 carry current ratio within their industries’ typical mid-ranges, suggesting balanced short-term liquidity relative to peers.

PNR

Capital Goods industry group

1.47

Max: 5.22
Q3: 2.95
Median: 2.08
PNR: 1.47
Q1: 1.43
Min: 0.36

ROK

Capital Goods industry group

2.11

Max: 5.22
Q3: 2.95
ROK: 2.11
Median: 2.08
Q1: 1.43
Min: 0.36

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their current ratio against the Capital Goods industry group benchmark.

Debt / Equity (MRQ)

Both Pentair (PNR) at 0.42 and Rockwell Automation (ROK) at 1.00 fund their balance sheets with roughly industry-typical debt-to-equity mixes.

PNR

Capital Goods industry group

0.42

Max: 2.33
Q3: 1.12
Median: 0.60
PNR: 0.42
Q1: 0.29
Min: 0.00

ROK

Capital Goods industry group

1.00

Max: 2.33
Q3: 1.12
ROK: 1.00
Median: 0.60
Q1: 0.29
Min: 0.00

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their debt-to-equity ratio against the Capital Goods industry group benchmark.

Financial Strength Metrics

Financial strength metrics for Pentair (PNR) and Rockwell Automation (ROK)
Metric	PNR	ROK
Current Ratio (MRQ)	1.47	2.11
Debt / Equity (MRQ)	0.42	1.00
Net Debt / EBITDA	1.61	1.58

Dividends

Dividend Yield (TTM)

Rockwell Automation (ROK) pays no dividend (yield 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile Pentair (PNR) reports a yield of 1.52%, ranking against industry peers normally.

PNR

Capital Goods industry group

1.52%

Max: 2.66%
PNR: 1.52%
Q3: 1.14%
Median: 0.24%
Q1: 0.00%
Min: 0.00%

ROK

Capital Goods industry group

0.00%

Max: 2.66%
Q3: 1.14%
Median: 0.24%
ROK: 0.00%
Q1: 0.00%
Min: 0.00%

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their dividend yield against the Capital Goods industry group benchmark.

Dividend Payout Ratio (TTM)

Both Pentair (PNR) at 28.88% and Rockwell Automation (ROK) at 51.03% pay out an above-typical share of earnings for their industries, leaving thinner cover if profits dip.

PNR

Capital Goods industry group

28.88%

Max: 67.39%
PNR: 28.88%
Q3: 28.02%
Median: 6.86%
Q1: 0.00%
Min: 0.00%

ROK

Capital Goods industry group

51.03%

Max: 67.39%
ROK: 51.03%
Q3: 28.02%
Median: 6.86%
Q1: 0.00%
Min: 0.00%

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their payout ratio against the Capital Goods industry group benchmark.

Dividend Metrics

Dividend metrics for Pentair (PNR) and Rockwell Automation (ROK)
Metric	PNR	ROK
Dividend Yield (TTM)	1.52%	0.00%
Dividend Payout Ratio (TTM)	28.88%	51.03%

Valuation

P/E Ratio (TTM)

Pentair (PNR) at 18.56 sits in the cheaper P/E ratio quartile, while Rockwell Automation (ROK) at 29.97 is closer to its industry’s usual earnings multiple — a discount for PNR, though growth and earnings durability still matter.

PNR

Capital Goods industry group

18.56

Max: 59.38
Q3: 35.92
Median: 25.41
Q1: 19.47
PNR: 18.56
Min: 3.03

ROK

Capital Goods industry group

29.97

Max: 59.38
Q3: 35.92
ROK: 29.97
Median: 25.41
Q1: 19.47
Min: 3.03

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their P/E ratio against the Capital Goods industry group benchmark.

P/S Ratio (TTM)

Pentair (PNR) at 2.74 is priced about in line with its industry on P/S ratio, while Rockwell Automation (ROK) at 4.65 sits in the pricier quartile — ROK costs more per dollar of sales.

PNR

Capital Goods industry group

2.74

Max: 7.54
Q3: 3.76
PNR: 2.74
Median: 2.15
Q1: 1.03
Min: 0.03

ROK

Capital Goods industry group

4.65

Max: 7.54
ROK: 4.65
Q3: 3.76
Median: 2.15
Q1: 1.03
Min: 0.03

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their P/S ratio against the Capital Goods industry group benchmark.

P/B Ratio (MRQ)

Pentair (PNR) at 2.82 sits near its industry’s typical P/B ratio, while Rockwell Automation (ROK) at 11.76 prices above its benchmark range — ROK looks rich relative to book.

PNR

Capital Goods industry group

2.82

Max: 9.66
Q3: 5.00
Median: 3.12
PNR: 2.82
Q1: 1.81
Min: -1.08

ROK

Capital Goods industry group

11.76

ROK: 11.76
Max: 9.66
Q3: 5.00
Median: 3.12
Q1: 1.81
Min: -1.08

Pentair (PNR) vs. Rockwell Automation (ROK): A comparison of their P/B ratio against the Capital Goods industry group benchmark.

Valuation Metrics

Valuation metrics for Pentair (PNR) and Rockwell Automation (ROK)
Metric	PNR	ROK
P/E Ratio (TTM)	18.56	29.97
P/S Ratio (TTM)	2.74	4.65
P/B Ratio (MRQ)	2.82	11.76
Free Cash Flow Yield (TTM)	4.77%	-1.13%