Pentair
PNR on NYSE. Pentair sells water treatment and pumping equipment to homes, businesses, and factories. Market value $8.4bn.
Price checks use the past 12 months to June 2026. Quality checks use five annual reports, the latest for the year to December 2025.
Should I look at this?
Worth a closer look
Why it could be worth it
What to watch out for
Nothing stood out in the numbers we check.
This is not advice. Check the numbers below.
For every $100 of what the whole company costs, it produced $7.96 of spare cash in the past 12 months. A savings account pays about $4.
You pay 12.3 years of operating profit for the business. The average large US company costs around 18.
Each dollar kept in the business earns 12 cents a year. Above 10 is good.
Quality score: 96 of 100. Price score: 99 of 100. Our list needs 70 on quality and 60 on price.
$52.94 a share, 2% above its 1-year low
Over the past year the price has ranged from $51.76 to $112.81.
Expected to report results Tuesday 20 Oct, before the market opens.
Dividend: 1.9% a year
Paid every year for at least 5 years
Prices from Tuesday’s close (6 October).
Five years of cash, in billions
| Revenue | |||||
| Revenue | $3.8bn | $4.1bn | $4.1bn | $4.1bn | $4.2bn |
| Operating margin | |||||
| Operating margin | 16.9% | 14.4% | 18.0% | 19.7% | 20.5% |
| Debt to equity | |||||
| Debt to equity | 0.37 | 0.86 | 0.62 | 0.46 | 0.42 |
| Shares outstanding | |||||
| Shares outstanding | 0.16bn | 0.17bn | 0.17bn | 0.16bn | 0.16bn |
Health checks
- Free cash flow positive5 of 5 years
- Accounting looks honest (Beneish)Not enough data
- Financial strength (Piotroski)8 of 9
- Profit backed by cash (accruals)Yes
- Debt0.42× equity
- Revenue growth, five yearsSlow, 6.7% a year
- Buying back its own sharesRoughly flat
The quarter to June 2026
How the business did, compared with the same quarter a year earlier.
- Sales: $933 million last quarter, down 17% on a year ago.
- Profit: $129 million, down 13% on a year ago.
- It keeps 20 cents of each $1 of sales as operating profit, up from 19 cents a year earlier.
- Spare cash over the past 12 months: $673 million, down from $837 million.
- 2% fewer shares than a year ago. Each share owns a bit more of the company.
- Debt is $1.5 billion more than cash, up from $1.3 billion a year ago.
- Sales grew on a year ago in 3 of the last 4 quarters.
| Quarter to | Amount |
|---|---|
| September 2024 | $993m |
| December 2024 | $973m |
| March 2025 | $1.0bn |
| June 2025 | $1.1bn |
| September 2025 | $1.0bn |
| December 2025 | $1.0bn |
| March 2026 | $1.0bn |
| June 2026 | $933m |
| Quarter to | Amount |
|---|---|
| September 2024 | $140m |
| December 2024 | $166m |
| March 2025 | $155m |
| June 2025 | $149m |
| September 2025 | $184m |
| December 2025 | $166m |
| March 2026 | $172m |
| June 2026 | $129m |
From the company's quarterly reports to the SEC.
Dates
- Next results (estimated)
- 20 October 2026
- Last annual report (10-K)
- 24 February 2026
- Next quarterly (estimated, 10-Q)
- 27 October 2026
Who owns it
6 long-term investors we follow own it, unchanged from 6 last quarter. 717 funds in all.
- Mairs & PowerAndy Adams
- Value
- $4m
- Share of fund
- <0.1%
- Cullen Capital ManagementJames Cullen
- Value
- $752,035
- Share of fund
- <0.1%
| Fund | Value | Share of that fund | Change |
|---|---|---|---|
| Gates Capital ManagementJeff Gates | $128m | 4.2% | Added |
| Gotham Asset ManagementJoel Greenblatt | $17m | <0.1% | Added |
| GMOJeremy Grantham | $7m | <0.1% | Added |
| Mairs & PowerAndy Adams | $4m | <0.1% | |
| Cullen Capital ManagementJames Cullen | $752,035 | <0.1% | |
| First Manhattan Co.First Manhattan partners | $452,064 | <0.1% | Cut |
Largest holders overall
- BlackRock$1.1bnCut
- Vanguard Capital Management$810m
- State Street$702mAdded
- Vanguard Portfolio Management$575m
- FMR$518mAdded
- Price T Rowe Associates$491mCut
- Nordea Investment Management AB$402mAdded
- Invesco$384mAdded
- Geode Capital Management$338m
- Amundi$302mCut
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
2 investors own more than 5%.
- BlackRock, Inc.Passive investor9.0%Since 31 March 2025
- Vanguard Capital ManagementPassive investor7.6%Since 31 March 2026
- T. Rowe Price Associates, Inc.Passive investorSold down below 5%Since 30 June 2026
- The Vanguard GroupPassive investorSold down below 5%Since 13 March 2026
| Holder | Stake | Since | |
|---|---|---|---|
BlackRock, Inc. Passive investor | 9.0% | 31 March 2025 | |
Vanguard Capital Management Passive investor | 7.6% | 31 March 2026 | |
T. Rowe Price Associates, Inc. Passive investor | Sold down below 5% | 30 June 2026 | |
The Vanguard Group Passive investor | Sold down below 5% | 13 March 2026 |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
No insider bought shares on the open market in the last 12 months. 4 sold $3m, $1m of it under preset trading plans.
- Rolchigo Philip M.EVP & Chief Technology OfficerSoldunder a preset trading plan
- Date
- 25 February 2026
- Shares
- 6,493
- Price
- $103.22
- Value
- $670,207
- Speetzen Michael TDirectorSold
- Date
- 11 February 2026
- Shares
- 7,000
- Price
- $99.99
- Value
- $699,930
- GLENN T MICHAELDirectorSoldunder a preset trading plan
- Date
- 1 December 2025
- Shares
- 6,558
- Price
- $104.33
- Value
- $684,196
- Fishman Robert PEVP & Chief Financial OfficerSold
- Date
- 14 November 2025
- Shares
- 7,786
- Price
- $105.42
- Value
- $820,777
| Date | Who | Did | Shares | Price | Value |
|---|---|---|---|---|---|
| 25 February 2026 | Rolchigo Philip M. EVP & Chief Technology Officer | Sold under a preset trading plan | 6,493 | $103.22 | $670,207 |
| 11 February 2026 | Speetzen Michael T Director | Sold | 7,000 | $99.99 | $699,930 |
| 1 December 2025 | GLENN T MICHAEL Director | Sold under a preset trading plan | 6,558 | $104.33 | $684,196 |
| 14 November 2025 | Fishman Robert P EVP & Chief Financial Officer | Sold | 7,786 | $105.42 | $820,777 |
From Form 4 filings: insiders must report trades in their own company's shares within two days.
Warning signs in its filings
Problems the company itself reported to the SEC, in its own words.
None of the warning signs we check for were found.
We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.
We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 24 Feb 2026, plus the 10-Q filed 28 Jul 2026 and 9 later 8-Ks.
A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.
What could go wrong
Cheap for a reason is the question the numbers cannot answer.
Whether the price already reflects the risks is what the deep dive is for.
What changed in the risks this year
Companies must list what could hurt them each year. These are the parts that changed since last year’s report.
The use by our employees of artificial intelligence tools or technology can adversely impact our business by posing risks to our confidential or proprietary information and could give rise to legal actions or reputational damage, or otherwise adversely affect our business.
Could happenOur workforce may use artificial intelligence tools or technology, which may result in the exposure of our confidential or proprietary information to unauthorized third parties and the misuse of our intellectual property. Use of artificial intelligence tools or technology may also result in claims against us alleging violation of third-party intellectual property rights. Use of artificial intelligence tools or technology may also result in inaccurate results that could cause mistakes in the Company’s decision-making or other business activities, which may have a material adverse impact on our business and results of operations. Further, there is no guarantee that our training and enforcement of procedures governing the use of artificial intelligence will be adequate to safeguard against the unauthorized use of artificial intelligence tools or technology.
Read moreWe may use artificial intelligence in our business and in our products, and challenges with properly managing its use could result in reputational harm, competitive harm, and legal liability, and adversely affect our results of operations.
Could happenWe are incorporating artificial intelligence solutions into our products, services and features, and we are leveraging artificial intelligence, including generative artificial intelligence and machine learning, in our product development, operations and software programming. Our competitors or other third parties may incorporate artificial intelligence into their products or operational processes more quickly or more successfully than us, which could have a material adverse effect on our competitive position, reputation and results of operations. In addition, there are significant risks involved in developing and deploying artificial intelligence and there can be no assurance that the usage of artificial intelligence will enhance our products or services or be beneficial to our business, including our efficiency or profitability. The rapid evolution of artificial intelligence, including the regulation of artificial intelligence by government or other regulatory agencies, will require significant resources to develop, test and maintain our platforms, offerings, services and features to implement artificial intelligence ethically and minimize any unintended harmful impacts.
Read moreFailure to achieve and maintain a high level of product and service quality and on-time delivery could damage our reputation with customers and negatively impact our results.
Already happenedProduct and service quality issues could harm customer confidence in our company and our brands. If certain of our product and service offerings do not meet applicable safety standards or our customers’ expectations regarding quality, safety or performance, we could experience lost sales and increased costs and we could be exposed to legal, financial and reputational risks. In addition, a recall or claim could require us to review some or all of our product portfolio to assess whether similar issues are present in other products, which could result in a significant disruption to our business and our results of operations. We have experienced such quality issues in the past and may experience such issues in the future. We cannot be certain that our quality controls and procedures will reveal defects in our products or their raw materials, which may not become apparent until after the products have been placed in use in the market. Accordingly, there is a risk that products will have defects, which could result in loss of sales or delays in market acceptance and require a product recall or field corrective action. Such remedial actions can be expensive to implement and may damage our reputation and customer relationships. We have conducted product recalls and field corrective actions in the past and may do so again in the future. Our ability to compete and generate sales depends in part on our capacity to meet customer demand and ensure that products and services are delivered to the customer on time. If we are unable to manufacture and deliver products to customers on time, we could experience lost sales and increased costs and we could be exposed to legal, financial and reputational risks. The inability to deliver our products to customers on time could also restrict our manufacturing capacity, which could lead to the loss of customers and restrict our ability to grow sales. The failure to address any of the above factors could have a material adverse effect on our business, financial condition, results of operations and cash flows.
Read more
The deep dive
Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.
- What the business is worth, as a range, and the margin of safety at today’s price
- Prices to start buying, buy, and buy hard
- The three things that would make this a mistake
- Every number footnoted to the filing it came from
Your first deep dive is free.
Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.