Stocks/Funds/CIK 1409427

Boston Common Asset Management, LLC

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1409427
Assets
$1.55B
-52.5% YoY
Holdings
186
Lifetime alpha vs market
-4.16% annual
Average hold time
5.2 yr
median 5.3 yr

Quarterly history

Cum return +93% vs S&P +145% · α -52% lifetimeAUM $1.6B · peak $4.8BFlow $-62M (-4%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-8.04%
trims when stocks drop
when a holding falls −10%+
Middle response
-8.97%
baseline attrition
Rally response
-6.11%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
TSMTaiwan Semiconductor Man$97M6.3%+105.6%10.5 yr
NVDANVIDIA Corporation$70M4.5%+60.9%4.8 yr
AAPLApple Inc.$61M3.9%+14.7%10.5 yr
MSFTMicrosoft Corporation$53M3.4%-0.6%10.5 yr
GOOGLAlphabet Inc.$40M2.6%10.5 yr
AVGOBroadcom Inc.$38M2.5%+86.0%3.3 yr
GOOGAlphabet Inc.$37M2.4%+84.3%10.5 yr
NFLXNetflix, Inc.$34M2.2%+3.1%6.0 yr
VVisa Inc.$29M1.9%-13.1%10.5 yr
MSMorgan Stanley$26M1.7%+44.8%10.5 yr
SPOTSpotify Technology S.A.$26M1.6%-11.8%0.5 yr
VRTVertiv Holdings Co$25M1.6%+247.5%2.3 yr
MRKMerck & Co., Inc.$24M1.5%+38.9%10.5 yr
LLYEli Lilly and Company$22M1.4%+12.2%5.3 yr
CLColgate-Palmolive Compan$21M1.4%-6.8%10.5 yr

Portfolio composition (YoY)

Industry mix
Semiconductors16.5%+10.2pp$256M
Drug Manufacturers - General7.0%+2.6pp$108M
Internet Content & Information6.9%+4.9pp$107M
Consumer Electronics4.3%+2.4pp$67M
Electrical Equipment & Parts4.1%+2.5pp$64M
Software - Infrastructure4.0%+2.1pp$63M
Industrial - Machinery3.9%+1.2pp$61M
Telecommunications Services3.3%-1.2pp$51M
Banks - Regional3.2%-1.1pp$50M
Asset Management2.5%+0.9pp$39M
Country
US66.0%+28.6pp
TW6.3%+4.2pp
CH3.9%+0.3pp
JP3.2%+1.0pp
IE2.6%+0.2pp
Unknown1.9%-28.7pp
DE1.9%-2.9pp
NL1.7%-0.1pp
Top 5: 20.7% · Top 10: 31.3% · Top 25: 50.5%

Winners

TickerPrev $PnLYoY %
TSM$67M+0.07B105.6%
VRT$13M+0.03B247.5%
NVDA$40M+0.02B60.9%
AVGO$27M+0.02B86.0%
GOOG$25M+0.02B84.3%

Losers

TickerPrev $PnLYoY %
TMUS$30M-0.01B-19.9%
V$35M-0.00B-13.1%
HDB$28M-0.00B-24.3%
CL$28M-0.00B-6.8%
AWK$23M-0.00B-5.4%

Top buys this quarter · 15

SPOT Spotify Technology S.A.+$10M
AMAT Applied Materials, Inc.+$9M
EBAY eBay Inc.new+$8M
HASI HA Sustainable Infrastructure +$4M
LIN Linde plcnew+$4M
BBVA Banco Bilbao Vizcaya Argentarinew+$3M
ARGX argenx SEnew+$3M
DGX Quest Diagnostics Incorporated+$3M
SFM Sprouts Farmers Market, Inc.+$2M
PG The Procter & Gamble Company+$2M

Top sells this quarter · 15

TSM Taiwan Semiconductor Manufactu$15M
INTU Intuit Inc.$9M
AZN AstraZeneca PLC$8M
BLD TopBuild Corp.exit$8M
VRT Vertiv Holdings Co$21M
ASML ASML Holding N.V.$7M
SBS Companhia de Saneamento Básicexit$7M
CFG Citizens Financial Group, Inc.$7M
WY Weyerhaeuser Companyexit$5M
TFC Truist Financial Corporationexit$3M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$1.55B186+3.13%+17.59%-14.46%-0.06B
2025-12-31$1.67B197+8.22%+17.72%-9.50%-2.06B
2025-09-30$3.58B299+2.25%+17.52%-15.26%+0.22B
2025-06-30$3.57B299+12.02%+14.94%-2.92%+0.02B
2025-03-31$3.27B291-2.00%+8.30%-10.30%-0.18B
2024-12-31$3.41B299+2.28%+24.89%-22.61%-0.38B
2024-09-30$3.84B313+13.47%+36.04%-22.57%-0.19B
2024-06-30$3.90B314+8.66%+24.49%-15.83%-0.07B
2024-03-31$4.18B304+6.95%+29.62%-22.67%-0.47B
2023-12-31$4.39B305+5.61%+26.18%-20.57%-0.20B
2023-09-30$4.19B305+7.56%+21.57%-14.01%-0.43B
2023-06-30$4.68B301+5.66%+19.42%-13.77%+0.19B
2023-03-31$4.81B296-2.92%-7.82%+4.90%+2.62B
2022-12-31$2.09B258+11.57%+7.56%+4.00%-0.04B
2022-09-30$1.91B256-2.99%-4.93%+1.93%-0.04B
2022-06-30$2.01B264-14.10%-16.11%+2.01%+0.02B