Stocks/Funds/CIK 1082917

GW&K Investment Management, LLC

index-like (500+ pos)long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1082917
Assets
$11.34B
+5.1% YoY
Holdings
1,013
Lifetime alpha vs market
+9.72% annual
Average hold time
3.9 yr
median 3.5 yr

Quarterly history

Cum return +286% vs S&P +100% · α +186% lifetimeAUM $11.3B · peak $12.0BFlow $-228M (-2%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-9.47%
trims when stocks drop
when a holding falls −10%+
Middle response
-8.40%
baseline attrition
Rally response
-8.60%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
AEISAdvanced Energy Industri$194M1.7%+239.4%2.0 yr
MTSIMACOM Technology Solutio$186M1.6%+121.2%10.3 yr
RBCRBC Bearings Incorporate$153M1.3%+68.8%10.5 yr
ITTITT Inc.$152M1.3%+48.7%4.3 yr
SPXCSPX Technologies, Inc.$135M1.2%+55.3%3.8 yr
FIXComfort Systems USA, Inc$132M1.2%+329.0%5.5 yr
GMEDGlobus Medical, Inc.$129M1.1%+17.7%10.5 yr
APGAPi Group Corporation$126M1.1%+70.0%2.3 yr
STRLSterling Infrastructure,$124M1.1%+259.7%2.0 yr
LOPEGrand Canyon Education, $123M1.1%-1.7%10.5 yr
BURLBurlington Stores, Inc.$110M1.0%+36.5%10.5 yr
POWLPowell Industries, Inc.$109M1.0%+6.3%1.3 yr
TXRHTexas Roadhouse, Inc.$106M0.9%+0.7%10.5 yr
AVGOBroadcom Inc.$104M0.9%+86.0%8.3 yr
FSSFederal Signal Corporati$104M0.9%+47.8%8.5 yr

Portfolio composition (YoY)

Industry mix
Biotechnology7.5%+1.8pp$855M
Banks - Regional5.9%-0.2pp$670M
Industrial - Machinery5.7%+0.7pp$648M
Semiconductors5.4%+0.8pp$615M
Engineering & Construction4.2%+1.9pp$478M
Hardware, Equipment & Parts3.8%+2.7pp$433M
Oil & Gas Exploration & Production3.6%+0.3pp$407M
Medical - Devices3.5%-0.1pp$401M
Chemicals - Specialty3.0%-0.2pp$339M
Financial - Capital Markets2.9%+0.1pp$326M
Country
US93.8%+0.8pp
IE1.5%+0.6pp
CA1.3%-0.4pp
Unknown1.1%-0.6pp
GB0.6%-0.3pp
KY0.6%
TW0.3%
CH0.2%+0.1pp
Top 5: 7.2% · Top 10: 12.8% · Top 25: 26.1%

Winners

TickerPrev $PnLYoY %
FIX$57M+0.19B329.0%
MTSI$128M+0.16B121.2%
STRL$57M+0.15B259.7%
INSM$105M+0.12B114.3%
RBC$148M+0.10B68.8%

Losers

TickerPrev $PnLYoY %
NOVT$43M-0.00B-7.6%
LOPE$111M-0.00B-1.7%
MSFT$118M-0.00B-0.6%

Top buys this quarter · 15

PIPR Piper Sandler Companiesnew+$70M
COHR Coherent, Inc.new+$68M
FN Fabrinetnew+$67M
CW Curtiss-Wright Corporation+$43M
FSS Federal Signal Corporation+$43M
TSM Taiwan Semiconductor Manufactu+$36M
PLNT Planet Fitness, Inc.new+$32M
SF Stifel Financial Corp.+$97M
TXN Texas Instruments Incorporated+$30M
SPXC SPX Technologies, Inc.+$30M

Top sells this quarter · 15

MTSI MACOM Technology Solutions Hol$84M
TPH Tri Pointe Homes, Inc.$64M
LITE Lumentum Holdings Inc.$58M
RBC RBC Bearings Incorporated$45M
BFAM Bright Horizons Family Solutio$42M
PNFP Pinnacle Financial Partners, Iexit$39M
WSO Watsco, Inc.$39M
MRK Merck & Co., Inc.$34M
THR Thermon Group Holdings, Inc.$34M
ADC Agree Realty Corporation$26M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$11.34B1013+16.26%+17.59%-1.33%-0.23B
2025-12-31$11.56B991+7.87%+17.72%-9.85%+0.03B
2025-09-30$11.30B992+6.46%+17.52%-11.05%-0.71B
2025-06-30$11.17B985+6.61%+14.94%-8.33%-0.26B
2025-03-31$10.79B1004-2.74%+8.30%-11.04%-0.12B
2024-12-31$11.76B967+13.20%+24.89%-11.68%-0.01B
2024-09-30$11.68B955+26.03%+36.04%-10.01%-0.10B
2024-06-30$10.94B935+12.33%+24.49%-12.16%-0.02B
2024-03-31$11.34B917+20.96%+29.62%-8.66%-0.24B
2023-12-31$10.72B925+17.16%+26.18%-9.02%-0.43B
2023-09-30$9.95B908+13.97%+21.57%-7.60%-0.17B
2023-06-30$10.54B897+14.72%+19.42%-4.70%-0.21B
2023-03-31$10.33B458-6.24%-7.82%+1.58%+0.01B
2022-12-31$9.86B452-14.53%-18.17%+3.64%-0.02B
2022-09-30$9.06B395-12.46%-15.51%+3.05%+0.10B
2022-06-30$9.27B830-9.15%-10.62%+1.47%-0.27B