1y return+11.8%S&P 500 +20.9%
3y return+38.2%S&P 500 +68.5%
5y return+40.9%S&P 500 +74.5%
These returns are for its stock picks as disclosed on Form 13F: last quarter's holdings, valued at this quarter's prices. They miss trades within each quarter, short positions, options, bonds, cash and fees, so they aren't the returns its clients got.
$100 invested in its stock picks
Since September 30, 2018: $236 against $257 in the S&P 500.2
Impax Asset Management Group plcS&P 500 (SPY)
Top holdings
At the end of June 30, 2026. Change is in shares since the quarter before.2
| Stock | Value | Share of portfolio | Change |
|---|---|---|---|
| KLACKLA Corp | $749.0M | 4.9% | +582.4% |
| NVDANVIDIA Corp | $744.9M | 4.8% | +2.2% |
| Linde PLCCUSIP G54950103 | $736.6M | 4.8% | −17.1% |
| XYLXylem Inc/NY | $528.3M | 3.4% | −2.5% |
| MSFTMicrosoft Corp | $503.8M | 3.3% | +13.6% |
| AWKAmerican Water Works Co Inc | $471.5M | 3.1% | +27.2% |
| VLTOVeralto Corp | $459.9M | 3.0% | +53.6% |
| CTASCintas Corp | $410.5M | 2.7% | +60.5% |
| WCNWaste Connections Inc | $329.9M | 2.1% | −6.5% |
| SBSCia de Saneamento Basico do Es | $302.4M | 2.0% | +55.2% |
| WMSAdvanced Drainage Systems Inc | $289.7M | 1.9% | −4.2% |
| ECLEcolab Inc | $275.4M | 1.8% | +15.0% |
| HUBBHubbell Inc | $254.7M | 1.7% | −28.7% |
| Aptiv PLCCUSIP G3265R107 | $250.9M | 1.6% | −11.0% |
| VRTVertiv Holdings Co | $244.3M | 1.6% | −32.7% |
| AAgilent Technologies Inc | $222.5M | 1.4% | −9.2% |
| IEXIDEX Corp | $218.3M | 1.4% | +1.5% |
| WTSWatts Water Technologies Inc | $212.7M | 1.4% | −7.6% |
| APHAmphenol Corp | $210.8M | 1.4% | +246.9% |
| CNMCore & Main Inc | $202.8M | 1.3% | +47.4% |
| MRVLMarvell Technology Inc | $196.7M | 1.3% | −71.5% |
| RenaissanceRe Holdings LtdCUSIP G7496G103 | $195.0M | 1.3% | −3.5% |
| AOSA O Smith Corp | $176.5M | 1.1% | −34.2% |
| AMATApplied Materials Inc | $175.6M | 1.1% | −6.5% |
| ITRIItron Inc | $166.7M | 1.1% | −12.1% |
Best picks still held
How each current holding has done since the quarter it first appeared in its filings (up to six years back).
| Stock | Held since | Return since | Now worth |
|---|---|---|---|
| VRTVertiv Holdings Co | June 30, 2020 | +2369.2% | $244.3M |
| NVDANVIDIA Corp | March 31, 2021 | +1399.0% | $744.9M |
| AMATApplied Materials Inc | June 30, 2020 | +1096.1% | $175.6M |
| VMIValmont Industries Inc | June 30, 2020 | +408.3% | $130.6M |
| WTSWatts Water Technologies Inc | June 30, 2020 | +383.3% | $212.7M |
| HUBBHubbell Inc | June 30, 2020 | +317.4% | $254.7M |
| CDNSCadence Design Systems Inc | June 30, 2020 | +291.1% | $160.1M |
| SBSCia de Saneamento Basico do Es | June 30, 2022 | +261.7% | $302.4M |
| WMSAdvanced Drainage Systems Inc | June 30, 2020 | +217.7% | $289.7M |
| APHAmphenol Corp | March 31, 2025 | +168.8% | $210.8M |
Sold off last quarter
- BLDXImpax Global Infrastructure ET was $70.7M
- CHEChemed Corp was $66.6M
- Sealed Air CorpCUSIP 81211K100 was $6.1M
- RVTYRevvity Inc was $5.5M
- BIIBBiogen Inc was $5.3M
- WGSGeneDx Holdings Corp was $3.9M
- PBHPrestige Consumer Healthcare I was $3.9M
- VITLVital Farms Inc was $3.4M
- GISGeneral Mills Inc was $2.5M
- WCCWESCO International Inc was $2.2M
Quarter by quarter
| Quarter | Its picks | S&P 500 |
|---|---|---|
| June 30, 2026 | +9.1% | +14.8% |
| March 31, 2026 | −1.9% | −4.6% |
| December 31, 2025 | −2.3% | +2.4% |
| September 30, 2025 | +6.9% | +7.8% |
| June 30, 2025 | +10.8% | +10.5% |
| March 31, 2025 | −3.4% | −4.6% |
| December 31, 2024 | −5.4% | +2.1% |
| September 30, 2024 | +8.5% | +5.4% |
| June 30, 2024 | −2.1% | +4.0% |
| March 31, 2024 | +8.5% | +10.0% |
| December 31, 2023 | +12.6% | +11.2% |
| September 30, 2023 | −5.9% | −3.6% |
| June 30, 2023 | +6.0% | +8.3% |
| March 31, 2023 | +7.6% | +7.0% |
| December 31, 2022 | +10.0% | +7.1% |
| September 30, 2022 | −2.8% | −5.3% |
| June 30, 2022 | −14.5% | −16.5% |
| March 31, 2022 | −10.9% | −4.9% |
| December 31, 2021 | +8.4% | +10.7% |
| September 30, 2021 | +1.3% | +0.3% |
Sources
Every number on this page points here. Each one links to the public record.
- 1SEC EDGAR: Impax Asset Management Group plc Form 13F filingshttps://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1749768&type=13F-HR&dateb=&owner=include&count=40CIK 1749768
- 2SEC: 13F for the quarter ended June 30, 2026https://www.sec.gov/Archives/edgar/data/1749768/000174976826000004/Filed August 11, 2026 · accession 0001749768-26-000004