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Impax Asset Management Group plc

13F filer · CIK 0001749768
Reported Aug 11, 2026
Net seller this quarter
13F portfolio value$15.4BU.S. long equity reported on 13F
Positions2839 new · 11 closed
Net flow last quarter-$1.2BBuys minus sells
Top 10 positions weight34.1%Concentration

Holdings

13F · last 4 quarters free
Scroll for earlier quarters
CompanyValue% of portfolio% of companyPOSITION CHANGE qoq %First reported
Q2 2026Reported Aug 11, 2026283 positions
KLACKla Corp$749M4.87%0.19%-31.8%Q4 2022
NVDANvidia Corp$745M4.85%0.02%+2.2%Q1 2021
LINLinde PLC$737M4.79%0.31%-17.1%Q4 2018
XYLXylem Inc.$528M3.44%1.88%-2.5%Q3 2018
MSFTMicrosoft Corp$504M3.28%0.02%+13.6%Q3 2018
AWKAmerican Water Works Company, Inc.$472M3.07%1.84%+27.2%Q3 2018
VLTOVeralto Corp$460M2.99%2.11%+53.6%Q4 2023
CTASCintas Corp$410M2.67%0.60%+60.5%Q3 2021
WCNWaste Connections, Inc.$330M2.15%0.78%-6.5%Q3 2024
SBSCompanhia de Saneamento Basico Do Estado de Sao Paulo-Sabesp$302M1.97%1.49%+55.2%Q3 2018
WMSAdvanced Drainage Systems, Inc.$290M1.89%2.59%-4.2%Q3 2018
ECLEcolab Inc.$275M1.79%0.35%+15.0%Q3 2018
HUBBHubbell Inc$255M1.66%0.92%-28.7%Q3 2018
APTVAptiv PLC$251M1.63%1.96%-11.0%Q3 2018
VRTVertiv Holdings Co$244M1.59%0.19%-32.7%Q1 2020
AAgilent Technologies, Inc.$222M1.45%0.59%-9.2%Q3 2018
IEXIdex Corp$218M1.42%1.30%+1.5%Q3 2018
WTSWatts Water Technologies Inc$213M1.38%Not reported-7.6%Q3 2018
APHAmphenol Corp$211M1.37%0.10%+247.0%Q1 2025
CNMCore & Main, Inc.$203M1.32%Not reported+47.4%Q1 2023
MRVLMarvell Technology, Inc.$197M1.28%0.08%-71.5%Q2 2023
RNRRenaissancere Holdings Ltd$195M1.27%1.47%-3.5%Q3 2018
AOSSmith A O Corp$176M1.15%1.86%-34.2%Q3 2018
AMATApplied Materials Inc$176M1.14%0.03%-6.5%Q1 2019
ITRIItron, Inc.$167M1.08%4.40%-12.1%Q3 2018
MASMasco Corp$165M1.08%1.03%-14.5%Q3 2018
MAMastercard Inc$163M1.06%0.03%+13.7%Q3 2018
CDNSCadence Design Systems Inc$160M1.04%0.15%-28.1%Q3 2018
PNRPENTAIR plc$160M1.04%1.31%+21.7%Q3 2018
TELTE Connectivity plc$154M1.00%0.26%+2.5%Q3 2018
WABWestinghouse Air Brake Technologies Corp$151M0.98%0.33%+75.5%Q2 2025
ACMAecom$149M0.97%1.65%+53.9%Q2 2023
SNPSSynopsys Inc$149M0.97%0.17%+5.5%Q1 2021
DEDeere & Co$146M0.95%0.09%+1141.8%Q1 2020
BMIBadger Meter Inc$140M0.91%3.24%Not reportedQ3 2018
ZWSZurn Elkay Water Solutions Corp$133M0.87%1.59%+0.9%Q4 2021
VMIValmont Industries Inc$131M0.85%1.16%-0.4%Q3 2018
FELEFranklin Electric Co Inc$126M0.82%2.66%-9.3%Q3 2018
UNPUnion Pacific Corp$124M0.81%0.08%-39.1%Q1 2021
PNFPPinnacle Financial Partners, Inc.$115M0.75%0.76%+175.6%Q1 2025
TTEKTetra Tech Inc$114M0.74%1.54%+2.7%Q2 2024
AAPLApple Inc.$105M0.68%0.00%-13.8%Q3 2018
NEENextera Energy Inc$103M0.67%0.06%+2495.4%Q3 2024
QXOQXO, Inc.$101M0.66%0.81%+24.4%Q4 2025
TTTrane Technologies plc$99.2M0.65%0.09%-11.7%Q1 2020
ADSKAutodesk, Inc.$97.3M0.63%0.24%+52.9%Q3 2018
SITESiteOne Landscape Supply, Inc.$95.7M0.62%1.91%+1.5%Q2 2022
LFUSLittelfuse Inc$89.8M0.58%0.78%-42.9%Q1 2019
MPWRMonolithic Power Systems, Inc.$87.7M0.57%0.13%-28.3%Q3 2020
CFGCitizens Financial Group Inc$77.5M0.50%0.26%-13.2%Q3 2018
Q1 2026Reported May 12, 2026285 positions
LINLinde PLC$849M5.92%0.37%-7.1%Q4 2018
NVDANvidia Corp$635M4.43%0.02%+20.0%Q1 2021
XYLXylem Inc.$548M3.82%1.89%-6.1%Q3 2018
KLACKla Corp$536M3.73%0.28%+71.2%Q4 2022
MSFTMicrosoft Corp$440M3.07%0.02%-25.3%Q3 2018
AWKAmerican Water Works Company, Inc.$383M2.67%1.44%+18.0%Q3 2018
WCNWaste Connections, Inc.$344M2.40%0.83%+339.6%Q3 2024
HUBBHubbell Inc$335M2.34%1.28%-16.8%Q3 2018
APTVAptiv PLC$319M2.22%2.16%+7.5%Q3 2018
VLTOVeralto Corp$299M2.08%1.36%+7.3%Q4 2023
AOSSmith A O Corp$282M1.97%2.82%-8.0%Q3 2018
VRTVertiv Holdings Co$272M1.89%0.28%-10.2%Q1 2020
WMSAdvanced Drainage Systems, Inc.$264M1.84%2.65%-6.7%Q3 2018
CTASCintas Corp$254M1.77%0.38%+11.7%Q3 2021
EBAYEbay Inc$247M1.72%0.61%-13.4%Q4 2018
MRVLMarvell Technology, Inc.$229M1.60%0.26%-26.4%Q2 2023
ECLEcolab Inc.$229M1.59%0.31%+18.5%Q3 2018
AAgilent Technologies, Inc.$210M1.47%0.65%-29.0%Q3 2018
SBSCompanhia de Saneamento Basico Do Estado de Sao Paulo-Sabesp$206M1.43%0.96%-6.8%Q3 2018
ITRIItron, Inc.$197M1.37%4.95%+61.8%Q3 2018
RNRRenaissancere Holdings Ltd$190M1.32%1.48%-34.3%Q3 2018
UNPUnion Pacific Corp$182M1.27%0.13%+8.5%Q1 2021
IEXIdex Corp$180M1.25%1.28%-44.5%Q3 2018
WTSWatts Water Technologies Inc$171M1.19%Not reported-9.2%Q3 2018
CDNSCadence Design Systems Inc$165M1.15%0.22%+10.2%Q3 2018
TELTE Connectivity plc$156M1.08%0.25%-2.7%Q3 2018
ZTSZoetis Inc.$155M1.08%0.31%-16.9%Q3 2018
PNRPENTAIR plc$149M1.04%1.06%-48.2%Q3 2018
MASMasco Corp$144M1.00%1.18%-12.3%Q3 2018
CNMCore & Main, Inc.$141M0.98%Not reported-0.7%Q1 2023
MAMastercard Inc$140M0.97%0.02%-15.9%Q3 2018
SNPSSynopsys Inc$125M0.87%0.16%-28.7%Q1 2021
FELEFranklin Electric Co Inc$120M0.83%2.94%+15.7%Q3 2018
AAONAaon, Inc.$119M0.83%1.75%+2.3%Q2 2024
LFUSLittelfuse Inc$117M0.82%1.38%-23.9%Q1 2019
ACMAecom$117M0.82%1.08%-0.7%Q2 2023
ZWSZurn Elkay Water Solutions Corp$117M0.82%1.56%-10.7%Q4 2021
TTEKTetra Tech Inc$115M0.80%1.48%+19.4%Q2 2024
SITESiteOne Landscape Supply, Inc.$110M0.76%1.86%-10.0%Q2 2022
AAPLApple Inc.$107M0.75%0.00%+14.4%Q3 2018
MPWRMonolithic Power Systems, Inc.$96.7M0.67%0.18%-16.7%Q3 2020
TTTrane Technologies plc$95.4M0.66%0.10%-9.5%Q1 2020
WATWaters Corp$93.7M0.65%0.32%+35.5%Q3 2018
QXOQXO, Inc.$91.5M0.64%0.66%+275.0%Q4 2025
VMIValmont Industries Inc$90.7M0.63%1.16%-12.9%Q3 2018
AMATApplied Materials Inc$88.7M0.62%0.03%-69.6%Q1 2019
BSXBoston Scientific Corp$85.3M0.59%0.09%-21.1%Q2 2022
MWAMueller Water Products, Inc.$81M0.56%1.88%-12.4%Q3 2018
ORAOrmat Technologies, Inc.$80.9M0.56%1.18%+6.9%Q3 2018
WABWestinghouse Air Brake Technologies Corp$79.6M0.55%0.19%+54.3%Q2 2025
Q4 2025Reported Jan 29, 2026279 positions
LINLinde PLC$785M4.91%0.39%-3.5%Q4 2018
MSFTMicrosoft Corp$770M4.82%0.02%+2.2%Q3 2018
XYLXylem Inc.$665M4.16%2.00%-8.2%Q3 2018
NVDANvidia Corp$566M3.54%0.01%-4.6%Q1 2021
HUBBHubbell Inc$364M2.28%1.54%-12.5%Q3 2018
AAgilent Technologies, Inc.$353M2.21%0.92%-12.4%Q3 2018
PNRPENTAIR plc$345M2.16%2.03%-7.6%Q3 2018
APTVAptiv PLC$325M2.03%2.01%-5.6%Q3 2018
VLTOVeralto Corp$314M1.96%1.27%-18.1%Q4 2023
AWKAmerican Water Works Company, Inc.$311M1.95%1.22%+38.1%Q3 2018
AOSSmith A O Corp$311M1.95%3.07%-4.1%Q3 2018
IEXIdex Corp$304M1.90%2.28%-12.9%Q3 2018
WMSAdvanced Drainage Systems, Inc.$299M1.87%2.83%-17.3%Q3 2018
EBAYEbay Inc$273M1.71%0.70%+11.4%Q4 2018
RNRRenaissancere Holdings Ltd$273M1.71%2.21%-20.5%Q3 2018
MRVLMarvell Technology, Inc.$267M1.67%0.37%-13.4%Q2 2023
KLACKla Corp$258M1.62%0.16%-15.8%Q4 2022
CTASCintas Corp$253M1.58%0.34%+29.5%Q3 2021
WMWaste Management Inc$222M1.39%0.25%-9.7%Q3 2018
AMATApplied Materials Inc$220M1.37%0.11%-20.9%Q1 2019
SNPSSynopsys Inc$208M1.30%0.23%-28.8%Q1 2021
ZTSZoetis Inc.$198M1.24%0.37%-6.9%Q3 2018
VRTVertiv Holdings Co$196M1.22%0.32%+31.5%Q1 2020
ECLEcolab Inc.$190M1.19%0.26%+16.9%Q3 2018
MAMastercard Inc$190M1.19%0.03%-3.9%Q3 2018
CARRCARRIER GLOBAL Corp$188M1.17%0.42%-14.4%Q1 2022
WTSWatts Water Technologies Inc$179M1.12%Not reported-13.1%Q3 2018
TELTE Connectivity plc$174M1.09%0.26%-10.7%Q3 2018
SBSCompanhia de Saneamento Basico Do Estado de Sao Paulo-Sabesp$173M1.08%1.03%-11.8%Q3 2018
MASMasco Corp$172M1.08%1.33%+9.2%Q3 2018
CDNSCadence Design Systems Inc$168M1.05%0.20%+20.7%Q3 2018
BSXBoston Scientific Corp$164M1.03%0.12%-0.2%Q2 2022
UNPUnion Pacific Corp$159M1.00%0.12%-10.3%Q1 2021
CNMCore & Main, Inc.$149M0.93%Not reported+10.8%Q1 2023
ZWSZurn Elkay Water Solutions Corp$136M0.85%1.75%-6.6%Q4 2021
APHAmphenol Corp$133M0.83%0.08%-11.9%Q1 2025
ACMAecom$133M0.83%1.08%-0.7%Q2 2023
ITRIItron, Inc.$126M0.79%3.02%-14.7%Q3 2018
RSGRepublic Services, Inc.$123M0.77%0.19%-10.6%Q1 2019
TRMBTrimble Inc.$120M0.75%0.64%-19.9%Q3 2018
CFRCullen/Frost Bankers, Inc.$116M0.73%1.43%-0.5%Q4 2024
LFUSLittelfuse Inc$115M0.72%1.82%-0.4%Q1 2019
SITESiteOne Landscape Supply, Inc.$114M0.71%2.06%-0.5%Q2 2022
ISRGIntuitive Surgical Inc$113M0.71%0.06%-6.7%Q3 2022
TTEKTetra Tech Inc$108M0.67%1.23%Not reportedQ2 2024
FELEFranklin Electric Co Inc$107M0.67%2.54%Not reportedQ3 2018
AAONAaon, Inc.$107M0.67%1.72%+53.2%Q2 2024
TYLTyler Technologies Inc$107M0.67%0.49%NewQ4 2025
VMIValmont Industries Inc$105M0.66%1.32%-12.9%Q3 2018
CHEChemed Corp$105M0.65%1.72%-3.5%Q1 2023
Q3 2025Reported Nov 6, 2025275 positions
LINLinde PLC$907M5.29%0.41%+0.5%Q4 2018
MSFTMicrosoft Corp$807M4.71%0.02%-1.6%Q3 2018
XYLXylem Inc.$783M4.57%2.18%-3.3%Q3 2018
NVDANvidia Corp$593M3.46%0.01%-16.6%Q1 2021
VLTOVeralto Corp$409M2.38%1.55%+3.9%Q4 2023
HUBBHubbell Inc$402M2.35%1.76%-6.9%Q3 2018
PNRPENTAIR plc$396M2.31%2.19%-18.7%Q3 2018
APTVAptiv PLC$390M2.28%2.09%+54.5%Q3 2018
AAgilent Technologies, Inc.$380M2.22%1.04%-2.0%Q3 2018
AOSSmith A O Corp$356M2.08%3.20%+3.4%Q3 2018
WMSAdvanced Drainage Systems, Inc.$346M2.02%3.44%-17.9%Q3 2018
IEXIdex Corp$319M1.86%2.60%-0.3%Q3 2018
RNRRenaissancere Holdings Ltd$310M1.81%2.62%0.0%Q3 2018
SNPSSynopsys Inc$306M1.78%0.33%+0.6%Q1 2021
MRVLMarvell Technology, Inc.$304M1.78%0.42%+6.5%Q2 2023
KLACKla Corp$271M1.58%0.19%-26.9%Q4 2022
EBAYEbay Inc$256M1.49%0.62%-26.2%Q4 2018
ZTSZoetis Inc.$248M1.45%0.38%+43.9%Q3 2018
CARRCARRIER GLOBAL Corp$247M1.44%0.49%+54.2%Q1 2022
WMWaste Management Inc$247M1.44%0.28%+0.4%Q3 2018
AWKAmerican Water Works Company, Inc.$241M1.40%0.89%-0.4%Q3 2018
AMATApplied Materials Inc$221M1.29%0.14%-19.4%Q1 2019
CTASCintas Corp$213M1.24%0.26%+14.3%Q3 2021
WTSWatts Water Technologies Inc$207M1.21%Not reported-15.1%Q3 2018
SBSCompanhia de Saneamento Basico Do Estado de Sao Paulo-Sabesp$203M1.19%1.20%-10.3%Q3 2018
ITRIItron, Inc.$197M1.15%3.47%+127.4%Q3 2018
MAMastercard Inc$197M1.15%0.03%+8.4%Q3 2018
TELTE Connectivity plc$188M1.10%0.29%-48.3%Q3 2018
ACMAecom$183M1.07%1.06%-7.6%Q2 2023
UNPUnion Pacific Corp$182M1.06%0.13%+26.7%Q1 2021
MASMasco Corp$175M1.02%1.20%-5.8%Q3 2018
ECLEcolab Inc.$170M0.99%0.22%-5.0%Q3 2018
ORCLOracle Corp$169M0.99%0.02%-37.1%Q3 2018
BSXBoston Scientific Corp$169M0.98%0.12%+19.2%Q2 2022
ORAOrmat Technologies, Inc.$168M0.98%2.90%-12.9%Q3 2018
CDNSCadence Design Systems Inc$157M0.91%0.16%-3.8%Q3 2018
TRMBTrimble Inc.$154M0.90%0.80%-10.1%Q3 2018
RSGRepublic Services, Inc.$149M0.87%0.21%-4.2%Q1 2019
ZWSZurn Elkay Water Solutions Corp$147M0.86%1.87%-36.6%Q4 2021
PTCPTC Inc.$147M0.86%0.61%-2.9%Q3 2018
CNMCore & Main, Inc.$140M0.81%Not reported-19.2%Q1 2023
VRTVertiv Holdings Co$139M0.81%0.24%+94.4%Q1 2020
APHAmphenol Corp$138M0.81%0.09%-23.5%Q1 2025
ADSKAutodesk, Inc.$120M0.70%0.18%-31.0%Q3 2018
MPWRMonolithic Power Systems, Inc.$120M0.70%0.27%-24.4%Q3 2020
SITESiteOne Landscape Supply, Inc.$119M0.69%2.06%-8.9%Q2 2022
LFUSLittelfuse Inc$117M0.68%1.84%-5.8%Q1 2019
CFRCullen/Frost Bankers, Inc.$117M0.68%1.43%+11.9%Q4 2024
VMIValmont Industries Inc$116M0.68%1.52%-4.5%Q3 2018
CHEChemed Corp$113M0.66%1.79%-5.4%Q1 2023
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