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Pentair (PNR) Slides Into The Valuation Debate, Is The Stock A Bargain?

Simply Wall St·09/09/2026 16:25:26
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Pentair (PNR) has drawn fresh attention after a difficult stretch for the share price, with the stock down about 15% over the past month and roughly 18% in the past 3 months.

That recent slump extends a tougher run for Pentair, with the share price down 44.42% year to date and the 1-year total shareholder return falling 45.63%. This signals fading momentum as investors reassess both growth prospects and risk around the story.

Compare Pentair's slump with other potential value ideas by running your own check across our curated list of 49 high quality undervalued stocks.

Pentair’s slide has reset expectations, but not everyone agrees on what that reset means. Is most of the repricing already in the rear-view mirror? Or is the remaining valuation gap doing more of the talking?

Most Popular Narrative: 23.5% Undervalued

The prevailing narrative on Pentair pegs fair value at $76.64 versus a last close of $58.62, framing the recent share price slide as a potential discount rather than a verdict on the long term story.

The company's ongoing focus on product innovation including connected, digitally enabled water management systems and higher-margin filtration solutions is positioning Pentair to capture additional recurring aftermarket revenue streams and expand long-term net margins.

Read the complete narrative. Read the complete narrative.

If you want to see why this framework still supports a higher valuation, the key elements are the projections for how revenue, margins and earnings may reshape Pentair’s mix over time.

Result: Fair Value of $76.64 (UNDERVALUED)

Have a read of the narrative in full and understand what's behind the forecasts.

Still, Pentair’s heavy reliance on pool related demand, along with the recent CFO departure and ongoing legal investigations, could unsettle confidence in the current valuation story.

Find out about the key risks to this Pentair narrative.

Next Steps

Mixed feelings about Pentair after this drop? Take a moment to pressure test both the cautious and optimistic angles, then weigh the 5 key rewards and 2 important warning signs.

Looking for more investment ideas beyond Pentair?

Do not stop at Pentair. Use the Simply Wall Street screener to surface fresh ideas that fit your risk appetite and income goals before the next opportunity moves away.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.