Impax Asset Management Group plc — 13F Holdings & Portfolio
CIK 1749768 · latest 13F-HR filed 2026-08-11
Impax Asset Management Group plc manages $15.37B in 13F-reported U.S. long-equity assets across 284 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are KLAC (4.87%), NVDA (4.85%), LIN (4.79%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 9 new positions, exited 12, added to 150, and trimmed 67.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
30 PANTON STREET
LONDON, X0 SW1Y 4AJ
$15.37B
Long-equity book
284
Distinct positions
2026-06-30
Filed 2026-08-11
+9 / −12 / ↑150 / ↓67
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- KLA Corp$213.4M +39.8%
- Amphenol Corp$167.2M +384.2%
- Veralto Corp$161.4M +54.1%
- Cintas Corp$156.1M +61.4%
- Deere & Co$135.5M +1298.4%
Top Trims
- eBay Inc-$192.2M -77.8%
- Zoetis Inc-$139.1M -89.8%
- Linde PLC-$112.1M -13.2%
- A O Smith Corp-$105.6M -37.4%
- Hubbell Inc-$80.3M -24.0%
New Positions
- Badger Meter Inc$140.3M
- Teva Pharmaceutical Industries$18.1M
- Zebra Technologies Corp$15.1M
- Equinix Inc$13.9M
- Meritage Homes Corp$9.0M
Exited Positions
- Impax Global Infrastructure ET$70.7M
- Chemed Corp$66.6M
- Sealed Air Corp$6.1M
- Revvity Inc$5.5M
- Biogen Inc$5.3M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | KLA Corp | KLAC | 482480100 | $749.0M | 4.87% | 2,482,564 | SH |
| 2 | NVIDIA Corp | NVDA | 67066G104 | $744.9M | 4.85% | 3,722,756 | SH |
| 3 | Linde PLC | LIN | G54950103 | $736.6M | 4.79% | 1,419,343 | SH |
| 4 | Xylem Inc/NY | XYL | 98419M100 | $528.3M | 3.44% | 4,468,984 | SH |
| 5 | Microsoft Corp | MSFT | 594918104 | $503.8M | 3.28% | 1,350,648 | SH |
| 6 | American Water Works Co Inc | AWK | 030420103 | $471.5M | 3.07% | 3,583,592 | SH |
| 7 | Veralto Corp | VLTO | 92338C103 | $459.9M | 2.99% | 5,186,589 | SH |
| 8 | Cintas Corp | CTAS | 172908105 | $410.5M | 2.67% | 2,413,313 | SH |
| 9 | Waste Connections Inc | WCN | 94106B101 | $329.9M | 2.15% | 1,979,027 | SH |
| 10 | Cia de Saneamento Basico do Es | SBS | 20441A102 | $302.4M | 1.97% | 52,324,409 | SH |
| 11 | Advanced Drainage Systems Inc | WMS | 00790R104 | $289.7M | 1.89% | 1,845,942 | SH |
| 12 | Ecolab Inc | ECL | 278865100 | $275.4M | 1.79% | 988,389 | SH |
| 13 | Hubbell Inc | HUBB | 443510607 | $254.7M | 1.66% | 486,855 | SH |
| 14 | Aptiv PLC | APTV | G3265R107 | $250.9M | 1.63% | 4,087,314 | SH |
| 15 | Vertiv Holdings Co | VRT | 92537N108 | $244.3M | 1.59% | 729,503 | SH |
| 16 | Agilent Technologies Inc | A | 00846U101 | $222.5M | 1.45% | 1,674,957 | SH |
| 17 | IDEX Corp | IEX | 45167R104 | $218.3M | 1.42% | 962,000 | SH |
| 18 | Watts Water Technologies Inc | WTS | 942749102 | $212.7M | 1.38% | 543,412 | SH |
| 19 | Amphenol Corp | APH | 032095101 | $210.8M | 1.37% | 1,195,285 | SH |
| 20 | Core & Main Inc | CNM | 21874C102 | $202.8M | 1.32% | 4,203,618 | SH |
| 21 | Marvell Technology Inc | MRVL | 573874104 | $196.7M | 1.28% | 660,285 | SH |
| 22 | RenaissanceRe Holdings Ltd | RNR | G7496G103 | $195.0M | 1.27% | 615,422 | SH |
| 23 | A O Smith Corp | AOS | 831865209 | $176.5M | 1.15% | 2,813,713 | SH |
| 24 | Applied Materials Inc | AMAT | 038222105 | $175.6M | 1.14% | 242,832 | SH |
| 25 | Itron Inc | ITRI | 465741106 | $166.7M | 1.08% | 1,926,905 | SH |
| 26 | Masco Corp | MAS | 574599106 | $165.3M | 1.08% | 2,031,735 | SH |
| 27 | Mastercard Inc | MA | 57636Q104 | $163.2M | 1.06% | 317,661 | SH |
| 28 | Cadence Design Systems Inc | CDNS | 127387108 | $160.1M | 1.04% | 426,623 | SH |
| 29 | Pentair PLC | PNR | G7S00T104 | $160.0M | 1.04% | 2,087,003 | SH |
| 30 | TE Connectivity PLC | TEL | G87052109 | $153.8M | 1.00% | 762,712 | SH |
| 31 | Westinghouse Air Brake Technol | WAB | 929740108 | $150.6M | 0.98% | 558,757 | SH |
| 32 | AECOM | ACM | 00766T100 | $148.6M | 0.97% | 2,128,339 | SH |
| 33 | Synopsys Inc | SNPS | 871607107 | $148.5M | 0.97% | 332,929 | SH |
| 34 | Deere & Co | DE | 244199105 | $146.0M | 0.95% | 230,130 | SH |
| 35 | Badger Meter Inc | BMI | 056525108 | $140.3M | 0.91% | 945,694 | SH |
| 36 | Zurn Elkay Water Solutions Cor | ZWS | 98983L108 | $133.1M | 0.87% | 2,633,758 | SH |
| 37 | Valmont Industries Inc | VMI | 920253101 | $130.6M | 0.85% | 226,080 | SH |
| 38 | Franklin Electric Co Inc | FELE | 353514102 | $126.0M | 0.82% | 1,175,582 | SH |
| 39 | Union Pacific Corp | UNP | 907818108 | $123.9M | 0.81% | 455,346 | SH |
| 40 | Pinnacle Financial Partners In | PNFP | 72348N109 | $115.2M | 0.75% | 1,142,360 | SH |
| 41 | Tetra Tech Inc | TTEK | 88162G103 | $113.6M | 0.74% | 3,931,741 | SH |
| 42 | Apple Inc | AAPL | 037833100 | $105.0M | 0.68% | 363,014 | SH |
| 43 | NextEra Energy Inc | NEE | 65339F101 | $103.2M | 0.67% | 1,175,682 | SH |
| 44 | QXO Inc | QXO | 82846H405 | $101.3M | 0.66% | 5,861,003 | SH |
| 45 | Trane Technologies PLC | TT | G8994E103 | $99.2M | 0.65% | 202,048 | SH |
| 46 | Autodesk Inc | ADSK | 052769106 | $97.3M | 0.63% | 500,719 | SH |
| 47 | SiteOne Landscape Supply Inc | SITE | 82982L103 | $95.7M | 0.62% | 836,410 | SH |
| 48 | Littelfuse Inc | LFUS | 537008104 | $89.8M | 0.58% | 197,265 | SH |
| 49 | Monolithic Power Systems Inc | MPWR | 609839105 | $87.7M | 0.57% | 63,427 | SH |
| 50 | Citizens Financial Group Inc | CFG | 174610105 | $77.5M | 0.50% | 1,105,960 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-11 | $15.37B | 284 | 0001749768-26-000004 |
| 2026-03-31 | 2026-05-12 | $14.35B | 287 | 0001749768-26-000002 |
| 2025-12-31 | 2026-01-29 | $15.98B | 279 | 0001749768-26-000001 |
| 2025-09-30 | 2025-11-06 | $17.14B | 275 | 0001749768-25-000052 |
| 2023-12-31 | 2024-01-26 | $24.91B | 366 | 0001749768-24-000007 |
| 2023-09-30 | 2023-11-07 | $22.38B | 395 | 0001749768-23-000017 |