Impax Asset Management Group plc
In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 12, 2026), Impax Asset Management Group plc reported 287 stock positions worth $14.3 billion. Its top holding was Linde (LIN) at 5.9% of the portfolio, followed by Nvidia (NVDA, 4.4%) and Xylem (XYL, 3.8%). Compared with Q4 2025, it opened 29 new positions, sold out of 21, added to 110 and reduced 123. The biggest buy was KLA (KLAC, shares +71%) and the biggest sale Microsoft (MSFT, shares −25%).
- Most Recent 13F
- Q2 2026
- Location
- LONDON, X0
- CIK
- 0001749768
- Portfolio Value
- $14.3B (Q1 2026)
- SEC Filing
- 0001749768-26-000002 ↗ filed May 12, 2026
Holdings Value
Holdings 287 stocks · $14.3B
| LIN Linde PLC | 5.92% | 1,711,780 | $848.6M | Reduce -7.1% |
| NVDA Nvidia Corp. | 4.43% | 3,641,085 | $635.0M | Add +20.0% |
| XYL Xylem Inc. | 3.82% | 4,585,548 | $548.0M | Reduce -6.1% |
| KLAC KLA Corp. | 3.73% | 363,789 | $535.6M | Add +71.2% |
| MSFT Microsoft Corp. | 3.07% | 1,188,887 | $440.1M | Reduce -25.3% |
| AWK American Water Works Co. Inc. | 2.67% | 2,817,225 | $383.4M | Add +18.0% |
| WCN Waste Connections Inc. | 2.40% | 2,117,425 | $344.0M | Add +339.6% |
| HUBB Hubbell Inc. | 2.34% | 682,761 | $335.1M | Reduce -16.8% |
| APTV Aptiv PLC | 2.22% | 4,591,538 | $318.8M | Add +7.5% |
| VLTO Veralto Corp. | 2.08% | 3,376,097 | $298.5M | Add +7.3% |
| AOS Smith (a.o.) Corp. | 1.97% | 4,278,219 | $282.1M | Reduce -8.0% |
| VRT Vertiv Holdings Co. Class A | 1.89% | 1,084,483 | $271.7M | Reduce -10.2% |
| WMS Advanced Drainage Systems Inc. | 1.84% | 1,927,510 | $264.3M | Reduce -6.7% |
| CTAS Cintas Corp. | 1.77% | 1,503,567 | $254.3M | Add +11.7% |
| EBAY eBay Inc. | 1.72% | 2,715,835 | $247.2M | Reduce -13.4% |
| MRVL Marvell Technology Inc. | 1.60% | 2,314,196 | $229.2M | Reduce -26.4% |
| ECL Ecolab Inc. | 1.59% | 859,293 | $228.6M | Add +18.4% |
| A Agilent Technologies Inc. | 1.47% | 1,844,158 | $210.2M | Reduce -28.9% |
| SBS Cia Saneamento Basico DE-ADR filed as COMPANHIA DE SANEAMENTO BASI | 1.43% | 6,742,360 | $205.7M | Reduce -6.8% |
| ITRI Itron Inc. | 1.37% | 2,193,148 | $196.6M | Add +61.8% |
| RNR Renaissancere Holdings Ltd. | 1.32% | 637,714 | $189.5M | Reduce -34.3% |
| UNP Union Pacific Corp. | 1.27% | 748,216 | $181.5M | Add +8.5% |
| IEX Idex Corp. | 1.25% | 947,946 | $179.7M | Reduce -44.5% |
| WTS Watts Water Technologies-A | 1.19% | 588,022 | $170.7M | Reduce -9.2% |
| CDNS Cadence Design SYS Inc. | 1.15% | 593,375 | $164.9M | Add +10.2% |
| TEL Te Connectivity PLC | 1.08% | 744,353 | $155.6M | Reduce -2.7% |
| ZTS Zoetis Inc. | 1.08% | 1,311,067 | $155.0M | Reduce -16.9% |
| PNR Pentair PLC | 1.04% | 1,715,163 | $149.4M | Reduce -48.2% |
| MAS Masco Corp. | 1.00% | 2,377,161 | $143.5M | Reduce -12.3% |
| CNM Core & Main Inc. Class A | 0.98% | 2,851,367 | $140.9M | Reduce -0.7% |
| MA Mastercard Inc. Class A | 0.97% | 279,494 | $139.7M | Reduce -15.9% |
| SNPS Synopsys Inc. | 0.87% | 315,523 | $125.1M | Reduce -28.7% |
| FELE Franklin Electric Co. Inc. | 0.83% | 1,296,609 | $119.5M | Add +15.7% |
| AAON Aaon Inc. | 0.83% | 1,436,288 | $118.9M | Add +2.3% |
| LFUS Littelfuse Inc. | 0.82% | 345,705 | $117.3M | Reduce -23.9% |
| ACM Aecom | 0.82% | 1,382,667 | $117.3M | Reduce -0.7% |
| ZWS Zurn Elkay Water Solutions C | 0.82% | 2,609,142 | $117.0M | Reduce -10.7% |
| TTEK Tetra Tech Inc. | 0.80% | 3,830,074 | $115.4M | Add +19.4% |
| SITE Siteone Landscape Supply Inc. | 0.77% | 824,430 | $109.7M | Reduce -10.0% |
| AAPL Apple Inc. | 0.75% | 421,335 | $106.9M | Add +14.4% |
| MPWR Monolithic Power Systems Inc. | 0.67% | 88,456 | $96.7M | Reduce -16.7% |
| TT Trane Technologies PLC | 0.66% | 228,808 | $95.4M | Reduce -9.5% |
| WAT Waters Corp. | 0.65% | 314,584 | $93.7M | Add +35.5% |
| QXO Qxo Inc. | 0.64% | 4,713,068 | $91.5M | Add +275.0% |
| VMI Valmont Industries | 0.63% | 227,075 | $90.7M | Reduce -12.9% |
| AMAT Applied Materials Inc. | 0.62% | 259,602 | $88.7M | Reduce -69.6% |
| BSX Boston Scientific Corp. | 0.59% | 1,359,572 | $85.3M | Reduce -21.1% |
| MWA Mueller Water Products Inc. Class A | 0.56% | 2,948,281 | $81.0M | Reduce -12.4% |
| ORA Ormat Technologies Inc. | 0.56% | 723,077 | $80.9M | Add +6.8% |
| WAB Wabtec Corp. | 0.55% | 318,350 | $79.6M | Add +54.3% |
| ADSK Autodesk Inc. | 0.55% | 327,597 | $78.4M | Reduce -6.4% |
| CFG Citizens Financial Group | 0.53% | 1,274,383 | $76.4M | Reduce -26.3% |
| BLDX Impax Global Sustainable Inf | 0.49% | 2,755,857 | $70.7M | New |
| CFR Cullen/Frost Bankers Inc. | 0.47% | 493,040 | $67.6M | Reduce -46.2% |
| CHE Chemed Corp. | 0.46% | 176,426 | $66.6M | Reduce -27.8% |
| CARR Carrier Global Corp. | 0.46% | 1,176,257 | $66.2M | Reduce -66.9% |
| GNRC Generac Holdings Inc. | 0.46% | 336,461 | $65.7M | Reduce -26.9% |
| TREX Trex Company Inc. filed as TREX INC | 0.45% | 1,766,368 | $64.3M | Reduce -1.0% |
| DHR Danaher Corp. | 0.44% | 333,774 | $63.3M | Reduce -26.5% |
| TRMB Trimble Inc. | 0.44% | 962,072 | $62.8M | Reduce -37.1% |
| NVT Nvent Electric PLC | 0.44% | 527,865 | $62.4M | Reduce -4.6% |
| AMZN Amazon.com Inc. | 0.43% | 298,865 | $62.2M | Reduce -22.9% |
| ISRG Intuitive Surgical Inc. | 0.43% | 134,276 | $61.9M | Reduce -32.7% |
| BSY Bentley Systems Inc. Class B | 0.41% | 1,677,588 | $58.9M | Reduce -23.0% |
| MRSH Marsh & McLennan Cos | 0.41% | 337,944 | $58.6M | Reduce -21.0% |
| TMO Thermo Fisher Scientific Inc. | 0.40% | 117,758 | $57.9M | Reduce -21.0% |
| TYL Tyler Technologies Inc. | 0.39% | 164,247 | $56.2M | Reduce -30.1% |
| GOOGL Alphabet Inc. Class A | 0.39% | 194,933 | $56.1M | Reduce -21.0% |
| AVGO Broadcom Inc. | 0.37% | 170,190 | $52.7M | Add +40.7% |
| RGEN Repligen Corp. | 0.36% | 438,468 | $51.7M | Add +6.1% |
| DAR Darling Ingredients Inc. | 0.33% | 770,339 | $47.6M | Reduce -32.9% |
| NOW ServiceNow Inc. | 0.33% | 454,396 | $47.5M | Reduce -23.5% |
| AAMI Acadian Asset Management Inc. | 0.31% | 823,323 | $44.8M | Reduce -2.6% |
| PGR Progressive Corp. | 0.31% | 221,428 | $43.9M | Add +3.7% |
| APH Amphenol Corp. Class A | 0.30% | 344,516 | $43.5M | Reduce -65.0% |
| PTC PTC Inc. | 0.30% | 299,679 | $42.7M | Reduce -48.3% |
| VCTR Victory Capital Holding - A | 0.30% | 650,000 | $42.6M | No change |
| MTD Mettler-Toledo International | 0.29% | 32,523 | $41.0M | Add +4.1% |
| LLY Eli Lilly & Co. | 0.25% | 39,319 | $36.2M | Reduce -14.0% |
| PNFP Pinnacle Financial Partners | 0.25% | 414,438 | $35.7M | New |
| CLH Clean Harbors Inc. | 0.25% | 122,986 | $35.3M | Reduce -17.2% |
| MELI MercadoLibre Inc. | 0.24% | 19,738 | $34.1M | Add +701.7% |
| URI United Rentals Inc. | 0.23% | 46,262 | $33.7M | Reduce -3.1% |
| HDB HDFC Bank Ltd.-ADR | 0.22% | 1,274,713 | $31.7M | Reduce -24.8% |
| LGND Ligand Pharmaceuticals | 0.21% | 152,444 | $30.4M | Reduce -7.7% |
| GILD Gilead Sciences Inc. | 0.20% | 210,813 | $29.4M | Reduce -28.9% |
| JNJ Johnson & Johnson | 0.20% | 117,316 | $28.7M | Add +8.2% |
| ORCL Oracle Corp. | 0.20% | 191,605 | $28.2M | Add +12.2% |
| TSLA Tesla Inc. | 0.19% | 72,983 | $27.1M | Add +28.6% |
| WM Waste Management Inc. | 0.19% | 116,907 | $26.9M | Reduce -88.4% |
| EBC Eastern Bankshares Inc. | 0.17% | 1,275,000 | $24.9M | No change |
| TSM Taiwan Semiconductor-SP ADR | 0.16% | 68,746 | $23.2M | Reduce -28.2% |
| ONON On Holding AG Class A filed as ON HLDG AG | 0.16% | 672,474 | $22.9M | Add +629.3% |
| GOOG Alphabet Inc. Class C | 0.15% | 75,571 | $21.7M | Add +16.9% |
| ABT Abbott Laboratories | 0.15% | 206,569 | $21.2M | Add +61.1% |
| NXT Nextpower Inc. | 0.15% | 175,688 | $21.2M | New |
| GEV GE Vernova Inc. | 0.15% | 23,937 | $20.9M | Add +69.3% |
| MKC McCormick & Co.-Non VTG SHRS | 0.14% | 389,393 | $19.6M | Reduce -18.2% |
| ADC Agree Realty Corp. | 0.14% | 260,000 | $19.6M | Add +30.0% |
| C Citigroup Inc. | 0.14% | 172,784 | $19.6M | Add +25.2% |
Portfolio Sells Q4 2025 → Q1 2026
| MSFT Microsoft Corp. | Reduce -25.3% | 3.07% | −1.75 |
| WM Waste Management Inc. | Reduce -88.4% | 0.19% | −1.20 |
| PNR Pentair PLC | Reduce -48.2% | 1.04% | −1.12 |
| AMAT Applied Materials Inc. | Reduce -69.6% | 0.62% | −0.76 |
| A Agilent Technologies Inc. | Reduce -28.9% | 1.47% | −0.74 |
| RSG Republic Services Inc. | Reduce -94.3% | 0.05% | −0.72 |
| CARR Carrier Global Corp. | Reduce -66.9% | 0.46% | −0.71 |
| IEX Idex Corp. | Reduce -44.5% | 1.25% | −0.65 |
| APH Amphenol Corp. Class A | Reduce -65.0% | 0.30% | −0.53 |
| BSX Boston Scientific Corp. | Reduce -21.1% | 0.59% | −0.43 |
| SNPS Synopsys Inc. | Reduce -28.7% | 0.87% | −0.43 |
| TXN Texas Instruments Inc. | Reduce -91.3% | 0.05% | −0.42 |
| RNR Renaissancere Holdings Ltd. | Reduce -34.3% | 1.32% | −0.38 |
| XYL Xylem Inc. | Reduce -6.1% | 3.82% | −0.34 |
| PTC PTC Inc. | Reduce -48.3% | 0.30% | −0.33 |
| TRMB Trimble Inc. | Reduce -37.1% | 0.44% | −0.31 |
| TYL Tyler Technologies Inc. | Reduce -30.1% | 0.39% | −0.28 |
| ISRG Intuitive Surgical Inc. | Reduce -32.7% | 0.43% | −0.28 |
| PNFP Pinnacle Financial Partners | Sold out | 0.00% | −0.26 |
| CFR Cullen/Frost Bankers Inc. | Reduce -46.2% | 0.47% | −0.25 |
| NOW ServiceNow Inc. | Reduce -23.5% | 0.33% | −0.24 |
| MA Mastercard Inc. Class A | Reduce -15.9% | 0.97% | −0.21 |
| DHR Danaher Corp. | Reduce -26.5% | 0.44% | −0.21 |
| CHE Chemed Corp. | Reduce -27.8% | 0.46% | −0.19 |
| JPM JPMorgan Chase & Co. | Reduce -61.5% | 0.12% | −0.18 |
| HDB HDFC Bank Ltd.-ADR | Reduce -24.8% | 0.22% | −0.17 |
| ZTS Zoetis Inc. | Reduce -16.9% | 1.08% | −0.16 |
| TMO Thermo Fisher Scientific Inc. | Reduce -21.0% | 0.40% | −0.14 |
| AMZN Amazon.com Inc. | Reduce -22.9% | 0.43% | −0.13 |
| BSY Bentley Systems Inc. Class B | Reduce -23.0% | 0.41% | −0.11 |
| ADSK Autodesk Inc. | Reduce -6.4% | 0.55% | −0.10 |
| CFG Citizens Financial Group | Reduce -26.3% | 0.53% | −0.10 |
| GOOGL Alphabet Inc. Class A | Reduce -21.0% | 0.39% | −0.09 |
| GPK Graphic Packaging Holding Co. | Sold out | 0.00% | −0.09 |
| MRSH Marsh & McLennan Cos | Reduce -21.0% | 0.41% | −0.09 |
| MAS Masco Corp. | Reduce -12.3% | 1.00% | −0.08 |
| MRVL Marvell Technology Inc. | Reduce -26.4% | 1.60% | −0.07 |
| PANW Palo Alto Networks Inc. | Reduce -81.8% | 0.01% | −0.07 |
| MKC McCormick & Co.-Non VTG SHRS | Reduce -18.2% | 0.14% | −0.07 |
| ULTA Ulta Beauty Inc. | Reduce -38.3% | 0.09% | −0.06 |
| LLY Eli Lilly & Co. | Reduce -14.0% | 0.25% | −0.06 |
| TRS Trimas Corp. | Sold out | 0.00% | −0.05 |
| SEE Sealed Air Corp. | Reduce -57.9% | 0.04% | −0.05 |
| CIEN Ciena Corp. | Sold out | 0.00% | −0.05 |
| AMT American Tower Corp. | Reduce -38.4% | 0.09% | −0.04 |
| RYN Rayonier Inc. | Reduce -30.5% | 0.11% | −0.04 |
| CL Colgate-Palmolive Co. | Reduce -36.3% | 0.12% | −0.04 |
| ZWS Zurn Elkay Water Solutions C | Reduce -10.7% | 0.82% | −0.03 |
| GWW WW Grainger Inc. | Reduce -36.0% | 0.11% | −0.03 |
| WSC Willscot Holdings Corp. | Sold out | 0.00% | −0.03 |
Portfolio Buys Q4 2025 → Q1 2026
| KLAC KLA Corp. | Add +71.2% | 3.73% | +2.12 |
| WCN Waste Connections Inc. | Add +339.6% | 2.40% | +1.87 |
| NVDA Nvidia Corp. | Add +20.0% | 4.43% | +0.89 |
| AWK American Water Works Co. Inc. | Add +18.0% | 2.67% | +0.72 |
| ITRI Itron Inc. | Add +61.8% | 1.37% | +0.58 |
| BLDX Impax Global Sustainable Inf | New | 0.49% | +0.49 |
| QXO Qxo Inc. | Add +275.0% | 0.64% | +0.49 |
| ECL Ecolab Inc. | Add +18.4% | 1.59% | +0.40 |
| WAB Wabtec Corp. | Add +54.3% | 0.55% | +0.28 |
| UNP Union Pacific Corp. | Add +8.5% | 1.27% | +0.27 |
| PNFP Pinnacle Financial Partners | New | 0.25% | +0.25 |
| MELI MercadoLibre Inc. | Add +701.7% | 0.24% | +0.21 |
| APTV Aptiv PLC | Add +7.5% | 2.22% | +0.19 |
| CTAS Cintas Corp. | Add +11.7% | 1.77% | +0.19 |
| FELE Franklin Electric Co. Inc. | Add +15.7% | 0.83% | +0.16 |
| AAON Aaon Inc. | Add +2.3% | 0.83% | +0.16 |
| NXT Nextpower Inc. | New | 0.15% | +0.15 |
| ONON On Holding AG Class A | Add +629.3% | 0.16% | +0.13 |
| TTEK Tetra Tech Inc. | Add +19.4% | 0.80% | +0.13 |
| AAPL Apple Inc. | Add +14.4% | 0.75% | +0.12 |
| VLTO Veralto Corp. | Add +7.3% | 2.08% | +0.12 |
| AVGO Broadcom Inc. | Add +40.7% | 0.37% | +0.11 |
| WAT Waters Corp. | Add +35.5% | 0.65% | +0.10 |
| TDC Teradata Corp. | New | 0.10% | +0.10 |
| ORA Ormat Technologies Inc. | Add +6.8% | 0.56% | +0.10 |
| CDNS Cadence Design SYS Inc. | Add +10.2% | 1.15% | +0.10 |
| JBTM JBT Marel Corp. | New | 0.09% | +0.09 |
| GEV GE Vernova Inc. | Add +69.3% | 0.15% | +0.09 |
| VZ Verizon Communications Inc. | Add +457.3% | 0.09% | +0.08 |
| UFPT Ufp Technologies Inc. | New | 0.07% | +0.07 |
| DE Deere & Co. | New | 0.07% | +0.07 |
| PCG P G & E Corp. | Add +731.9% | 0.07% | +0.06 |
| JNJ Johnson & Johnson | Add +8.2% | 0.20% | +0.06 |
| LRCX Lam Research Corp. | Add +56.4% | 0.10% | +0.06 |
| MRK Merck & Co. Inc. | Add +39.0% | 0.13% | +0.06 |
| ADBE Adobe Inc. | Add +282.4% | 0.08% | +0.05 |
| T AT&T Inc. | Add +422.3% | 0.06% | +0.05 |
| NEM Newmont Corp. | New | 0.05% | +0.05 |
| MITK Mitek Systems Inc. | Add +10.7% | 0.13% | +0.05 |
| CI The Cigna Group | New | 0.05% | +0.05 |
| BROS Dutch Bros Inc. Class A | New | 0.05% | +0.05 |
| ABT Abbott Laboratories | Add +61.1% | 0.15% | +0.05 |
| ADC Agree Realty Corp. | Add +30.0% | 0.14% | +0.05 |
| BJ Bj's Wholesale Club Holdings | Add +37.5% | 0.11% | +0.05 |
| WH Wyndham Hotels & Resorts Inc. | Add +50.0% | 0.10% | +0.05 |
| INTC Intel Corp. | Add +443.1% | 0.05% | +0.04 |
| HIG Hartford Insurance Group Inc. | Add +115.1% | 0.07% | +0.04 |
| MOD Modine Manufacturing Co. | Add +25.0% | 0.08% | +0.04 |
| QCOM Qualcomm Inc. | Add +149.4% | 0.08% | +0.04 |
| EIX Edison International | Add +18.8% | 0.10% | +0.04 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 284 | $15.4B | KLAC, NVDA, LIN, XYL, MSFT |
| Q1 2026 | 287 | $14.3B | LIN, NVDA, XYL, KLAC, MSFT |
| Q4 2025 | 279 | $16.0B | LIN, MSFT, XYL, NVDA, HUBB |
| Q3 2025 | 275 | $17.1B | LIN, MSFT, XYL, NVDA, VLTO |
| Q2 2025 | 280 | $17.4B | LIN, MSFT, XYL, NVDA, PNR |
| Q1 2025 | 295 | $16.6B | LIN, MSFT, XYL, NVDA, PNR |
| Q4 2024 | 312 | $22.1B | MSFT, LIN, NVDA, XYL, AWK |
| Q3 2024Amended | 313 | $25.4B | MSFT, LIN, AWK, PNR, NVDA |
| Q2 2024Amended | 315 | $24.6B | MSFT, LIN, AWK, PNR, AMAT |
| Q1 2024 | 308 | $26.1B | MSFT, LIN, AWK, PNR, CTAS |