GWW vs PNR
As of Sep 20, 2026, W.W. Grainger (GWW) scores 6.3/10 and PENTAIR (PNR) 4.2/10 on AlphaStocks' five-model composite, so GWW scores higher. GWW trades 17% above its model fair value; PNR trades 37% below its model fair value.
GWW
W.W. GRAINGER, INC.
6.3
Consider Buy
$1,266.90
PNR
PENTAIR plc
4.2
Weak
$55.92
GWW vs PNR: Which is the Better Investment?
W.W. GRAINGER, INC. (GWW) scores 6.3/10 while PENTAIR plc (PNR) scores 4.2/10 on AlphaStocks' composite model. W.W. GRAINGER, INC. has the higher composite rating of Consider Buy. On a P/E basis, PENTAIR plc trades at 14.2x, making it the more attractively priced of the two. PENTAIR plc trades further below its estimated fair value.
This comparison is algorithmically generated and is not financial advice.
| Metric | GWW | PNR |
|---|---|---|
| Scores & Fundamentals | ||
| Composite Score | 6.3/10▲ | 4.2/10 |
| Rating | Consider Buy▲ | Weak |
| Price | $1,266.90 | $55.92 |
| P/E Ratio | 35.6 | 14.2▲ |
| ROE | 46.8%▲ | 17.1% |
| Market Cap | $60B | $9B |
| Fair Value | $1,085.66 | $89.31 |
| Dividend Yield | 0.7% | 1.3%▲ |
| Sector Rank | #32 of 265▲ | #170 of 265 |
| Model Verdicts | ||
| Piotroski | Strong | Strong |
| Buffett | Attractive | Strong▲ |
| Graham | Neutral | Neutral |
| Lynch | Neutral | Neutral |
| Greenblatt | Neutral | Strong▲ |
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GWW vs PNR: Which Stock Scores Higher?
W.W. GRAINGER, INC. (GWW) and PENTAIR plc (PNR) are both in the Industrials sector. GWW currently leads with a composite score of 6.3/10 (Consider Buy) compared to PNR's 4.2/10 (Weak).
The AlphaStocks composite score evaluates each stock across four dimensions: Quality (business strength measured by Piotroski F-Score and Buffett quality criteria), Value (discount to intrinsic worth using Graham, Lynch, and Greenblatt models), Momentum (6-month price trend), and Timing (a confirmation signal that requires both value and momentum to align). A higher composite score indicates stronger overall fundamentals combined with favorable market conditions.
This comparison uses the same scoring framework for both companies, ensuring an apples-to-apples evaluation. Scores are recalculated daily after market close using data from SEC filings and market prices. Read the full methodology to understand how each model contributes to the composite score.
Scores are algorithm-generated research tools, not investment recommendations. Past performance does not guarantee future results. Always do your own due diligence. Full disclaimer