GW&K Investment Management, LLC

CIK

1082917

Location

BOSTON, MA

Portfolio Value

Large $11,094,486,363

Diversification

Diversified

Filing Date

Global Rank

#397 / 8,608 ▲ 2 · as of Mar 2026

Top Industry

Biotechnology 6.3%

3Y Alpha vs SPY

-6.8%

Period ended 3 months ago

Filed May 13, 2026 · 2mo

25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+45.7%

SPY

+73.9%

Annualised alpha

-6.9%

Max drawdown

−24.1%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

921 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

1.7%

−0.1 pts

Top 5

7.4%

+0.1 pts

Top 10

13.1%

+0.3 pts

HHI

Diversified+2

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Industrials	22.6%	$2,507,046,811	133
Healthcare	16.1%	$1,784,263,271	120
Technology	15.3%	$1,702,951,803	141
Financial Services	14.6%	$1,623,375,625	144
Consumer Cyclical	10.9%	$1,205,860,154	116
Energy	5.2%	$580,316,539	45
Consumer Defensive	4.6%	$514,650,018	52
Basic Materials	4.5%	$495,228,155	42
Real Estate	2.9%	$325,000,019	50
Utilities	2.6%	$285,163,020	40
Communication Services	0.6%	$64,425,713	30
Unclassified	0.1%	$6,205,235	8

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
PIPR	Piper Sandler Companies	+619,501	915,843	$70,107,780
LEVI	Levi Strauss & Co	+440,917	2,660,516	$49,192,940
SF	Stifel Financial Corp	+410,344	1,307,745	$96,668,510
WMB	Williams Companies, Inc.	+404,422	405,271	$29,495,623
MCHP	Microchip Technology Inc	+404,220	405,635	$26,208,077
FSS	Federal Signal Corp /De/	+393,462	958,124	$103,611,528
BBIO	BridgeBio Pharma, Inc.	+336,521	962,643	$71,485,868
VCYT	Veracyte, Inc.	+297,239	1,437,322	$46,296,141
IRT	Independence Realty Trust, Inc.	+283,793	1,591,880	$23,703,092
PWP	Perella Weinberg Partners	+256,511	1,054,005	$19,140,730
RARE	Ultragenyx Pharmaceutical Inc.	+240,019	1,615,426	$33,843,174
CDRE	Cadre Holdings, Inc.	+222,249	1,047,176	$32,127,359
VVV	Valvoline Inc	+207,911	516,467	$17,394,608
GPC	Genuine Parts Co	+170,162	170,257	$18,004,677
EPAC	Enerpac Tool Group Corp	+157,868	943,136	$34,396,169
TXN	Texas Instruments Inc	+155,938	156,816	$30,444,258
DELL	Dell Technologies Inc.	+152,877	153,477	$25,190,180
SPXC	SPX Technologies, Inc.	+150,891	675,142	$134,987,890
CRNX	Crinetics Pharmaceuticals, Inc.	+142,361	1,618,686	$58,790,674
INSM	INSMED Inc	+140,378	623,048	$101,880,808
HALO	Halozyme Therapeutics, Inc.	+139,227	1,393,875	$90,086,140
NOVT	Novanta Inc	+121,700	858,654	$101,415,623
ARES	Ares Management Corp	+117,330	117,898	$12,862,671
PHAT	Phathom Pharmaceuticals, Inc.	+114,431	1,421,109	$15,788,520
LGN	Legence Corp.	+111,628	603,133	$34,052,889
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
TPH	Tri Pointe Homes, Inc.	−1,370,881	510,856	$23,872,300
COLB	Columbia Banking System, Inc.	−865,317	85,482	$2,344,770
THRM	Gentherm Inc	−854,946	1,351	$37,530
VIAV	Viavi Solutions Inc.	−781,908	1,771,881	$58,968,199
THR	Thermon Group Holdings, Inc.	−674,739	952,518	$48,006,907
AZTA	Azenta, Inc.	−576,845	973,256	$20,564,899
KD	Kyndryl Holdings, Inc.	−517,917	58	$760
SNDR	Schneider National, Inc.	−517,322	1,232,355	$32,484,877
BFAM	Bright Horizons Family Solutions Inc.	−513,371	782	$64,225
GTES	Gates Industrial Corp plc	−506,045	4,028,336	$91,080,676
SLGN	Silgan Holdings Inc	−478,800	60,966	$2,365,480
ENB	Enbridge Inc	−453,610	564,903	$30,583,848
TILE	Interface Inc	−445,362	548,051	$13,657,430
CGNX	Cognex Corp	−441,053	1,081,714	$52,993,167
MTSI	MACOM Technology Solutions Holdings, Inc.	−378,873	839,062	$186,330,498
TTAN	ServiceTitan, Inc.	−354,866	293	$18,593
ADC	Agree Realty Corp	−350,440	556,104	$41,919,119
GENI	Genius Sports Ltd	−331,162	325	$1,439
GTX	Garrett Motion Inc.	−330,763	1,425,926	$25,909,075
ESI	Element Solutions Inc	−315,413	2,076,164	$70,880,238
CBZ	CBIZ, Inc.	−300,766	478,267	$12,841,468
MRK	Merck & Co., Inc.	−284,664	10,667	$1,283,133
AHRT	AH Realty Trust, Inc.	−278,698	275	$1,512
CSCO	Cisco Systems, Inc.	−255,649	316,874	$24,586,253
PAR	Par Technology Corp	−253,746	78,218	$1,042,645
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
COHR	Coherent Corp.	287,335	$68,446,069
FN	Fabrinet	128,323	$66,923,010
PNFP	Pinnacle Financial Partners, Inc.	545,376	$46,978,688
CW	Curtiss Wright Corp	63,033	$42,933,036
TSM	Taiwan Semiconductor Manufacturing Co Ltd	107,276	$36,253,924
PLNT	Planet Fitness, Inc.	433,119	$32,215,390
LCII	Lci Industries	261,882	$32,206,248
AMCR	Amcor plc	493,165	$19,603,308
TRI	Thomson Reuters Corp /Can/	174,957	$15,742,630
FLEX	Flex Ltd.	118,956	$7,786,859
XOMA	XOMA Royalty Corp	232,141	$7,282,263
SYNA	SYNAPTICS Inc	33,263	$2,329,740
NET	Cloudflare, Inc.	332	$68,504
GLD	Spdr Gold Trust	152	$65,404
ESE	Esco Technologies Inc	164	$46,144
ROAD	Construction Partners, Inc.	344	$38,225
RKLB	Rocket Lab Corp	531	$34,100
FNV	FRANCO NEVADA Corp	130	$32,116
FRMI	Fermi Inc.	5,144	$30,040
EPD	Enterprise Products Partners L.P.	567	$21,455
CIEN	Ciena Corp	49	$19,023
ET	Energy Transfer LP	667	$12,873
CP	Canadian Pacific Kansas City Ltd/Cn	110	$8,652
TRU	TransUnion	123	$8,510
VSNT	Versant Media Group, Inc.	129	$4,775
No positions match the current search.

Sold Out

Positions the filer fully exited

17 positions

Ticker	Company	Shares	Value
BBSI	Barrett Business Services Inc	514,047	$18,613,641
GLOB	Globant S.A.	55,007	$3,595,807
BRBR	Bellring Brands, Inc.	52,041	$1,391,055
NTNX	Nutanix, Inc.	981	$50,707
MUSA	Murphy USA Inc.	125	$50,440
ROCK	Gibraltar Industries, Inc.	942	$46,572
POWI	Power Integrations Inc	301	$10,697
FUL	Fuller H B Co	143	$8,502
CUZ	Cousins Properties Inc	295	$7,605
FCN	Fti Consulting, Inc	40	$6,833
HAE	Haemonetics Corp	85	$6,812
BBWI	Bath & Body Works, Inc.	314	$6,305
OLN	OLIN Corp	130	$2,707
WIX	Wix.com Ltd.	14	$1,454
MICC	Magnum Ice Cream Co N.V.	63	$998
EMN	Eastman Chemical Co	12	$765
NSA	National Storage Affiliates Trust	3	$84
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

921 positions · $11,094,486,363 total · as of Mar 31, 2026

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

Showing 1–50 of 921 positions by value · page 1 of 19

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
AEIS	Advanced Energy Industries Inc Industrials	Reduced	601,105	-80,455	$193,982,594	+35.9%	1.75%
MTSI	MACOM Technology Solutions Holdings, Inc. Technology	Reduced	839,062	-378,873	$186,330,498	−10.7%	1.68%
RBC	RBC Bearings INC Industrials	Reduced	281,879	-82,457	$153,094,121	−6.3%	1.38%
ITT	Itt Inc. Industrials	Reduced	796,746	-63,941	$151,804,014	+1.7%	1.37%
SPXC	SPX Technologies, Inc. Industrials	Added	675,142	+150,891	$134,987,890	+28.7%	1.22%
FIX	Comfort Systems USA Inc Industrials	Reduced	95,674	-15,973	$131,933,488	+26.6%	1.19%
GMED	Globus Medical Inc Healthcare	Reduced	1,494,723	-21,622	$128,785,333	−2.7%	1.16%
APG	APi Group Corp Industrials	Reduced	3,110,942	-61,728	$126,055,369	+3.8%	1.14%
STRL	Sterling Infrastructure, Inc. Industrials	Reduced	304,736	-7,119	$124,109,829	+30.0%	1.12%
LOPE	Grand Canyon Education, Inc. Consumer Defensive	Reduced	723,725	-12,799	$123,054,960	+0.5%	1.11%
BURL	Burlington Stores, Inc. Consumer Cyclical	Reduced	339,458	-1,576	$110,452,843	+12.1%	1.00%
TXRH	Texas Roadhouse, Inc. Consumer Cyclical	Reduced	638,849	-13,818	$105,499,523	−2.6%	0.95%
AVGO	Broadcom Inc. Technology	Reduced	336,789	-58,780	$104,239,563	−23.9%	0.94%
FSS	Federal Signal Corp /De/ Industrials	Added	958,124	+393,462	$103,611,528	+69.0%	0.93%
INSM	INSMED Inc Healthcare	Added	623,048	+140,378	$101,880,808	+21.3%	0.92%
NOVT	Novanta Inc Technology	Added	858,654	+121,700	$101,415,623	+15.7%	0.91%
MSFT	Microsoft Corp Technology	Reduced	272,689	-28,255	$100,941,287	−30.6%	0.91%
IDA	Idacorp Inc Utilities	Reduced	699,780	-17,195	$100,047,546	+10.3%	0.90%
MTDR	Matador Resources Co Energy	Reduced	1,558,564	-12,964	$98,470,073	+47.6%	0.89%
MGY	Magnolia Oil & Gas Corp Energy	Reduced	3,081,264	-88,232	$97,275,504	+40.2%	0.88%
SF	Stifel Financial Corp Financial Services	Added	1,307,745	+410,344	$96,668,510	+29.0%	0.87%
MOG-A	Moog Inc. Industrials	Reduced	328,949	-7,724	$96,263,634	+17.4%	0.87%
JBL	Jabil Inc Technology	Reduced	345,291	-22,583	$91,719,647	+9.3%	0.83%
GTES	Gates Industrial Corp plc Industrials	Reduced	4,028,336	-506,045	$91,080,676	−6.4%	0.82%
HALO	Halozyme Therapeutics, Inc. Healthcare	Added	1,393,875	+139,227	$90,086,140	+6.7%	0.81%
MEDP	Medpace Holdings, Inc. Healthcare	Added	182,772	+26,574	$87,765,286	+0.0%	0.79%
ENTG	Entegris Inc Technology	Reduced	739,056	-8,813	$86,646,925	+37.5%	0.78%
NDSN	Nordson Corp Industrials	Reduced	312,593	-37,605	$83,168,492	−1.2%	0.75%
PFGC	Performance Food Group Co Consumer Defensive	Reduced	966,899	-6,927	$82,824,567	−5.4%	0.75%
UMBF	Umb Financial Corp Financial Services	Reduced	701,187	-17,090	$79,086,880	−4.3%	0.71%
CVCO	Cavco Industries, Inc. Consumer Cyclical	Added	163,284	+12,135	$79,076,808	−11.4%	0.71%
NBIX	Neurocrine Biosciences Inc Healthcare	Added	593,725	+17,077	$78,217,331	−4.4%	0.71%
BJ	BJ's Wholesale Club Holdings, Inc. Consumer Defensive	Reduced	744,326	-19,269	$73,256,564	+6.6%	0.66%
AIT	Applied Industrial Technologies Inc Industrials	Added	271,489	+54,980	$72,031,460	+29.6%	0.65%
BBIO	BridgeBio Pharma, Inc. Healthcare	Added	962,643	+336,521	$71,485,868	+49.3%	0.64%
ESI	Element Solutions Inc Basic Materials	Reduced	2,076,164	-315,413	$70,880,238	+18.6%	0.64%
JAZZ	Jazz Pharmaceuticals plc Healthcare	Reduced	371,098	-56,546	$70,156,076	−3.5%	0.63%
PIPR	Piper Sandler Companies Financial Services	Added	915,843	+619,501	$70,107,780	+178.6%	0.63%
VOYA	Voya Financial, Inc. Financial Services	Added	1,019,038	+94,859	$69,620,675	+1.1%	0.63%
COHR	Coherent Corp. Technology	NEW	287,335	NEW	$68,446,069	NEW	0.62%
SITE	SiteOne Landscape Supply, Inc. Industrials	Reduced	506,764	-3,742	$67,455,355	+6.1%	0.61%
ABBV	AbbVie Inc. Healthcare	Reduced	309,419	-65,512	$67,295,538	−21.4%	0.61%
FN	Fabrinet Technology	NEW	128,323	NEW	$66,923,010	NEW	0.60%
PM	Philip Morris International Inc. Consumer Defensive	Reduced	397,723	-6,033	$65,759,520	+1.5%	0.59%
RPM	Rpm International Inc/De/ Basic Materials	Added	646,163	+83,434	$64,228,602	+9.7%	0.58%
ETR	Entergy Corp /De/ Utilities	Reduced	568,684	-9,262	$63,897,334	+19.6%	0.58%
JPM	Jpmorgan Chase & Co Financial Services	Reduced	214,533	-2,994	$63,107,027	−10.0%	0.57%
CFG	Citizens Financial Group Inc/Ri Financial Services	Reduced	1,050,635	-16,442	$63,006,580	+1.1%	0.57%
GBCI	Glacier Bancorp, Inc. Financial Services	Added	1,409,101	+76,640	$62,944,540	+7.2%	0.57%
CHDN	Churchill Downs Inc Consumer Cyclical	Reduced	668,398	-13,798	$60,042,191	−22.6%	0.54%