Impax Asset Management Group plc

Holding company

CIK

1749768

Location

LONDON, X0

Portfolio Value

Large $15,370,568,692

Diversification

Diversified

Reports for

Impax Asset Management LTD IMPAX ASSET MANAGEMENT LLC

Filing Date

Global Rank

#412 / 8,818 ▼ 27

Top Industry

Specialty Industrial Machinery 11.1%

Period ended 4 months ago

Filed Aug 11, 2026 · 3mo

26 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Holding company

Schedule 13G, Jul 21, 2026

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style

Diversified active

Top 10 weight 34.1%, 55.3 effective positions, active share 75.8% against the Russell 1000 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests

Turnover

Medium turnover

33.7% over the last four quarters (30% to under 100%)

Horizon

Long horizon

Value-weighted holding period 17.9 quarters (12+), a floor since 39.4% of the book was already held when coverage starts

Closest benchmark: the Russell 1000 as of 2026-06-30, active share 75.8%; sector active share 37.7% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

View clone backtest

Portfolio Concentration

284 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

4.9%

−1.1 pts

Top 5

21.2%

+0.2 pts

Top 10

34.1%

+1.2 pts

HHI

181

Diversified+1

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Industrials	37.4%	$5,747,519,775	56
Technology	29.6%	$4,554,120,848	59
Basic Materials	6.8%	$1,051,744,395	10
Financial Services	6.7%	$1,023,859,450	43
Healthcare	6.6%	$1,018,632,477	43
Utilities	6.3%	$975,026,843	9
Consumer Cyclical	4.2%	$639,991,016	31
Consumer Defensive	0.9%	$137,665,924	12
Communication Services	0.8%	$115,971,114	6
Real Estate	0.7%	$105,673,841	14
Unclassified	0.0%	$363,009	1

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
SBS	Companhia De Saneamento Basico Do Estado De Sao Paulo-Sabesp	+45,582,049	52,324,409	$302,435,084
KLAC	Kla Corp	+2,118,775	2,482,564	$749,014,384
VLTO	Veralto Corp	+1,810,492	5,186,589	$459,946,712
CNM	Core & Main, Inc.	+1,352,251	4,203,618	$202,824,568
HCAT	Health Catalyst, Inc.	+1,250,000	4,000,000	$7,960,000
QXO	QXO, Inc.	+1,147,935	5,861,003	$101,278,131
NEE	Nextera Energy Inc	+1,130,384	1,175,682	$103,189,609
CTAS	Cintas Corp	+909,746	2,413,313	$410,456,275
APH	Amphenol Corp	+850,769	1,195,285	$210,752,651
AWK	American Water Works Company, Inc.	+766,367	3,583,592	$471,529,035
ACM	Aecom	+745,672	2,128,339	$148,558,062
PNFP	Pinnacle Financial Partners, Inc.	+727,922	1,142,360	$115,241,276
PNR	PENTAIR plc	+371,840	2,087,003	$159,989,649
ONON	On Holding AG	+360,412	1,032,886	$36,584,822
NXT	Nextpower Inc.	+328,632	504,320	$60,084,684
PCG	PG&E Corp	+242,511	815,554	$13,717,618
WAB	Westinghouse Air Brake Technologies Corp	+240,407	558,757	$150,640,887
DE	Deere & Co	+211,598	230,130	$145,978,362
GTES	Gates Industrial Corp Ltd.	+200,000	752,713	$21,053,382
RIVN	Rivian Automotive, Inc.	+200,000	850,000	$14,747,500
ADSK	Autodesk, Inc.	+173,122	500,719	$97,349,787
MSFT	Microsoft Corp	+161,761	1,350,648	$503,818,716
WRBY	Warby Parker Inc.	+150,000	425,000	$12,894,500
TDC	Teradata Corp	+137,500	684,529	$23,718,929
ECL	Ecolab Inc.	+129,096	988,389	$275,375,059
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
EBAY	Ebay Inc	−2,224,045	491,790	$54,957,532
MRVL	Marvell Technology, Inc.	−1,653,911	660,285	$196,692,298
AOS	Smith A O Corp	−1,464,506	2,813,713	$176,476,079
AAON	Aaon, Inc.	−1,093,123	343,165	$43,533,911
ZTS	Zoetis Inc.	−1,090,669	220,398	$15,837,800
APTV	Aptiv PLC	−504,224	4,087,314	$250,879,333
AAMI	Acadian Asset Management Inc.	−473,323	350,000	$25,032,000
TREX	Trex Co Inc	−462,069	1,304,299	$65,267,121
CFR	Cullen/Frost Bankers, Inc.	−398,040	95,000	$14,679,400
DAR	Darling Ingredients Inc.	−381,844	388,495	$21,219,596
EXTR	Extreme Networks Inc	−371,500	593,678	$19,217,356
VRT	Vertiv Holdings Co	−354,980	729,503	$244,252,194
MAS	Masco Corp	−345,426	2,031,735	$165,322,276
UNP	Union Pacific Corp	−292,870	455,346	$123,854,112
LIN	Linde PLC	−292,437	1,419,343	$736,553,856
WAT	Waters Corp	−269,566	45,018	$16,883,550
ITRI	Itron, Inc.	−266,243	1,926,905	$166,735,089
CARR	CARRIER GLOBAL Corp	−257,903	918,354	$67,361,265
DHR	Danaher Corp	−235,737	98,037	$18,674,087
NVT	nVent Electric plc	−224,417	303,448	$51,467,815
ORA	Ormat Technologies, Inc.	−210,105	512,972	$55,862,650
BSX	Boston Scientific Corp	−200,386	1,159,186	$49,474,058
HUBB	Hubbell Inc	−195,906	486,855	$254,722,536
A	Agilent Technologies, Inc.	−169,201	1,674,957	$222,484,538
CFG	Citizens Financial Group Inc	−168,423	1,105,960	$77,494,617
No positions match the current search.

New Positions

Positions the filer opened this quarter

9 positions

Ticker	Company	Shares	Value
BMI	Badger Meter Inc	945,694	$140,322,075
TEVA	Teva Pharmaceutical Industries Ltd	534,639	$18,113,569
ZBRA	Zebra Technologies Corp	57,500	$15,137,450
EQIX	Equinix Inc	13,339	$13,904,440
MTH	Meritage Homes CORP	106,961	$8,968,679
NHP	National Healthcare Properties, Inc.	547,518	$8,021,138
HLIT	Harmonic Inc.	475,000	$7,756,750
FCX	Freeport-Mcmoran Inc	72,471	$4,557,701
VMC	Vulcan Materials CO	6,724	$1,983,647
No positions match the current search.

Sold Out

Positions the filer fully exited

11 positions

Ticker	Company	Shares	Value
CHE	Chemed Corp	176,426	$66,643,157
—		144,781	$6,088,041
RVTY	Revvity, Inc.	62,822	$5,503,835
BIIB	Biogen Inc.	28,728	$5,266,704
WGS	GeneDx Holdings Corp.	60,000	$3,853,200
PBH	Prestige Consumer Healthcare Inc.	65,000	$3,852,550
VITL	Vital Farms, Inc.	238,915	$3,373,479
GIS	General Mills Inc	66,766	$2,485,030
WCC	Wesco International Inc	7,899	$2,161,324
FIS	Fidelity National Information Services, Inc.	35,504	$1,665,492
PODD	Insulet Corp	6,929	$1,453,981
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

284 tracked positions · $15,370,568,692 total · filing declares 284 positions · $15,370,564,179 · as of Jun 30, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 284 positions by value · page 1 of 6

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	Held (qtrs)	Est. cost/share	% of Portfolio
KLAC	Kla Corp Technology	Added	2,482,564	+2,118,775	$749,014,384	+39.8%	15	$93.14	4.87%
NVDA	Nvidia Corp Technology	Added	3,722,756	+81,671	$744,886,248	+17.3%	22	unpriced	4.85%
LIN	Linde PLC Basic Materials	Reduced	1,419,343	-292,437	$736,553,856	−13.2%	14	$344.97	4.79%
XYL	Xylem Inc. Industrials	Reduced	4,468,984	-116,564	$528,278,598	−3.6%	26+	before history	3.44%
MSFT	Microsoft Corp Technology	Added	1,350,648	+161,761	$503,818,716	+14.5%	26+	before history	3.28%
AWK	American Water Works Company, Inc. Utilities	Added	3,583,592	+766,367	$471,529,035	+23.0%	26+	before history	3.07%
VLTO	Veralto Corp Industrials	Added	5,186,589	+1,810,492	$459,946,712	+54.1%	11	$80.62	2.99%
CTAS	Cintas Corp Industrials	Added	2,413,313	+909,746	$410,456,275	+61.4%	20	$152.53	2.67%
WCN	Waste Connections, Inc. Industrials	Reduced	1,979,027	-138,398	$329,884,010	−4.1%	8	$170.72	2.15%
SBS	Companhia De Saneamento Basico Do Estado De Sao Paulo-Sabesp Utilities	Added	52,324,409	+45,582,049	$302,435,084	+47.0%	17	unpriced	1.97%
WMS	Advanced Drainage Systems, Inc. Industrials	Reduced	1,845,942	-81,568	$289,739,056	+9.6%	26+	before history	1.89%
ECL	Ecolab Inc. Basic Materials	Added	988,389	+129,096	$275,375,059	+20.5%	26+	before history	1.79%
HUBB	Hubbell Inc Industrials	Reduced	486,855	-195,906	$254,722,536	−24.0%	26+	before history	1.66%
APTV	Aptiv PLC Consumer Cyclical	Reduced	4,087,314	-504,224	$250,879,333	−21.3%	7	$66.99	1.63%
VRT	Vertiv Holdings Co Industrials	Reduced	729,503	-354,980	$244,252,194	−10.1%	26+	before history	1.59%
A	Agilent Technologies, Inc. Healthcare	Reduced	1,674,957	-169,201	$222,484,538	+5.8%	26+	before history	1.45%
IEX	Idex Corp Industrials	Added	962,000	+14,054	$218,325,900	+21.5%	26+	before history	1.42%
WTS	Watts Water Technologies Inc Industrials	Reduced	543,412	-44,610	$212,718,627	+24.6%	26+	before history	1.38%
APH	Amphenol Corp Technology	Added	1,195,285	+850,769	$210,752,651	+384.2%	6	$122.28	1.37%
CNM	Core & Main, Inc. Industrials	Added	4,203,618	+1,352,251	$202,824,568	+44.0%	14	$46.45	1.32%
MRVL	Marvell Technology, Inc. Technology	Reduced	660,285	-1,653,911	$196,692,298	−14.2%	13	$90.76	1.28%
RNR	Renaissancere Holdings Ltd Financial Services	Reduced	615,422	-22,292	$195,027,231	+2.9%	10	$231.97	1.27%
AOS	Smith A O Corp Industrials	Reduced	2,813,713	-1,464,506	$176,476,079	−37.4%	22	$66.70	1.15%
AMAT	Applied Materials Inc Technology	Reduced	242,832	-16,770	$175,567,536	+97.9%	26+	before history	1.14%
ITRI	Itron, Inc. Technology	Reduced	1,926,905	-266,243	$166,735,089	−15.2%	5	$111.46	1.08%
MAS	Masco Corp Industrials	Reduced	2,031,735	-345,426	$165,322,276	+15.2%	18	$59.20	1.08%
MA	Mastercard Inc Financial Services	Added	317,661	+38,167	$163,150,689	+16.8%	26+	before history	1.06%
CDNS	Cadence Design Systems Inc Technology	Reduced	426,623	-166,752	$160,120,144	−2.9%	26+	before history	1.04%
PNR	PENTAIR plc Industrials	Added	2,087,003	+371,840	$159,989,649	+7.1%	26+	before history	1.04%
TEL	TE Connectivity plc Technology	Added	762,712	+18,359	$153,770,366	−1.2%	8	$151.24	1.00%
WAB	Westinghouse Air Brake Technologies Corp Industrials	Added	558,757	+240,407	$150,640,887	+89.3%	5	$237.97	0.98%
ACM	Aecom Industrials	Added	2,128,339	+745,672	$148,558,062	+26.7%	13	$81.16	0.97%
SNPS	Synopsys Inc Technology	Added	332,929	+17,406	$148,509,639	+18.7%	9	$528.35	0.97%
DE	Deere & Co Industrials	Added	230,130	+211,598	$145,978,362	+1298.4%	2	$578.01	0.95%
BMI	Badger Meter Inc Technology	NEW	945,694	NEW	$140,322,075	NEW	1	$130.86	0.91%
ZWS	Zurn Elkay Water Solutions Corp Industrials	Added	2,633,758	+24,616	$133,083,791	+13.8%	19	$33.81	0.87%
VMI	Valmont Industries Inc Industrials	Reduced	226,080	-995	$130,583,808	+43.9%	26+	before history	0.85%
FELE	Franklin Electric Co Inc Industrials	Reduced	1,175,582	-121,027	$126,010,634	+5.4%	26+	before history	0.82%
UNP	Union Pacific Corp Industrials	Reduced	455,346	-292,870	$123,854,112	−31.8%	9	$238.56	0.81%
PNFP	Pinnacle Financial Partners, Inc. Financial Services	Added	1,142,360	+727,922	$115,241,276	+222.8%	2	$94.91	0.75%
TTEK	Tetra Tech Inc Industrials	Added	3,931,741	+101,667	$113,587,997	−1.5%	3	$33.95	0.74%
AAPL	Apple Inc. Technology	Reduced	363,014	-58,321	$105,041,731	−1.8%	26+	before history	0.68%
NEE	Nextera Energy Inc Utilities	Added	1,175,682	+1,130,384	$103,189,609	+2352.6%	8	$89.89	0.67%
QXO	QXO, Inc. Industrials	Added	5,861,003	+1,147,935	$101,278,131	+10.7%	3	$21.25	0.66%
TT	Trane Technologies plc Industrials	Reduced	202,048	-26,760	$99,237,895	+4.1%	26+	before history	0.65%
ADSK	Autodesk, Inc. Technology	Added	500,719	+173,122	$97,349,787	+24.1%	26+	before history	0.63%
SITE	SiteOne Landscape Supply, Inc. Industrials	Added	836,410	+11,980	$95,693,668	−12.8%	17	$136.65	0.62%
LFUS	Littelfuse Inc Technology	Reduced	197,265	-148,440	$89,820,672	−23.4%	26+	before history	0.58%
MPWR	Monolithic Power Systems, Inc. Technology	Reduced	63,427	-25,029	$87,678,947	−9.3%	24	$428.80	0.57%
CFG	Citizens Financial Group Inc Financial Services	Reduced	1,105,960	-168,423	$77,494,617	+1.4%	26+	before history	0.50%

Showing the top 50 of 284 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.