Boston Common Asset Management, LLC

Registered adviser

CIK

1409427

Location

BOSTON, MA

Portfolio Value

Mid $1,543,203,056

Diversification

Diversified

Files via

ABN AMRO INVESTMENT SOLUTIONS

Filing Date

Global Rank

#1,943 / 8,826 ▼ 68 · as of Jun 2026

Top Industry

Semiconductors 20.1%

Period ended 36 days ago

Filed Oct 13, 2026 · 23d

27 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

Registered adviser

Form ADV roster, Nov 1, 2026

Form ADV adviser

CRD 123558

Roster of Nov 1, 2026

Regulatory AUM

$4,171,137,148

Main clients

Diversified

Private funds

5 funds · Other private funds

Focus by fund count, roster of Nov 1, 2026

$1,097,192,525 gross assets

Registered funds advised

3 series (0 index, 0 ETFs)

$476,565,454 net assets· N-CEN Sep 30, 2025

LEI

25490024I00K3EFY4P69

Private funds on Schedule D 7.B.(1)

As filed Mar 27, 2024; SEC's bulk Form ADV archive ends with 2024 filings.

$1,110,850,100 gross assets in 6 funds Other private funds $1,110,850,100 (6)

Form ADV history

Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.

Rosters	Regulatory AUM	Main clients
Apr 2026 to Nov 2026	$4,171,137,148	Diversified
Apr 2025 to Mar 2026	$3,584,843,078	Diversified
Apr 2024 to Mar 2025	$4,537,178,648	Diversified
May 2023 to Mar 2024	$4,559,651,998	Diversified
Apr 2023	$4,559,651,998	Diversified
Apr 2022 to Mar 2023	$5,849,302,016	Diversified

3 earlier changes not shown.

Stated strategy

Fundamental active, Value Form ADV Part 2A, Mar 31, 2026 · original

In the firm's words

Fundamental active: Through rigorous analysis of financial and sustainability factors, Boston Common seeks to identify innovative, attractively valued companies for investment.
Value: Through rigorous analysis of financial and sustainability factors, Boston Common seeks to identify innovative, attractively valued companies for investment.

Portfolio style

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

Style

Diversified active

Top 10 weight 38.6%, 41.1 effective positions, active share 61.7% against the S&P 500 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests

Turnover

Low turnover

20.1% over the last four quarters (under 30%)

Horizon

Long horizon

Value-weighted holding period 18.7 quarters (12+), a floor since 52.5% of the book was already held when coverage starts

Closest benchmark: the S&P 500 as of 2026-06-30, active share 61.7%; sector active share 18.2% 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

128 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026

Top Position

7.5%

−0.9 pts

Top 5

29.1%

+1.7 pts

Top 10

39.9%

+1.3 pts

HHI

247

Diversified+4

Portfolio Trend

27 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2026

Sector	% Portfolio	Value	Positions
Technology	36.8%	$568,003,129	23
Financial Services	16.5%	$255,328,808	27
Healthcare	11.0%	$169,550,236	15
Communication Services	10.8%	$165,911,487	9
Industrials	9.4%	$145,391,578	15
Consumer Cyclical	5.4%	$83,827,868	14
Consumer Defensive	3.5%	$54,631,810	5
Basic Materials	2.0%	$30,842,301	4
Unclassified	1.5%	$23,685,404	10
Real Estate	1.5%	$23,494,673	4
Utilities	1.5%	$22,535,762	2

Last Quarter's Activity

Export CSV

Sep 30, 2026 vs Jun 30, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
HPE	Hewlett Packard Enterprise Co	+246,802	292,579	$18,692,872
KIM	Kimco Realty Corp	+142,839	225,340	$5,004,801
HDB	Hdfc Bank Ltd	+46,980	561,298	$12,539,397
ABT	Abbott Laboratories	+39,229	75,485	$7,460,182
VZ	Verizon Communications Inc	+37,416	344,081	$15,782,995
MET	Metlife Inc	+32,476	140,761	$13,254,055
CCK	Crown Holdings, Inc.	+30,031	59,848	$6,308,577
FITB	Fifth Third Bancorp	+29,995	266,083	$13,458,478
ASX	ASE Technology Holding Co., Ltd.	+26,186	46,783	$2,079,972
CFG	Citizens Financial Group Inc	+25,848	78,701	$5,017,975
SCHW	Schwab Charles Corp	+25,043	141,980	$13,877,125
INFY	Infosys Ltd	+24,800	228,879	$2,462,738
HASI	HA Sustainable Infrastructure Capital, Inc.	+21,235	358,948	$12,857,517
GXO	GXO Logistics, Inc.	+17,253	80,439	$3,575,513
MRK	Merck & Co., Inc.	+16,770	214,998	$31,241,359
CL	Colgate Palmolive Co	+16,057	247,061	$21,079,244
GILD	Gilead Sciences, Inc.	+14,584	99,047	$14,762,955
IFNNY	Infineon Technologies AG	+14,461	59,127	$3,985,159
EBAY	Ebay Inc	+14,433	116,985	$12,406,259
APTV	Aptiv PLC	+14,216	65,384	$2,812,819
SFM	Sprouts Farmers Market, Inc.	+13,789	125,386	$8,319,361
EW	Edwards Lifesciences Corp	+13,182	173,996	$15,019,334
LOW	Lowes Companies Inc	+12,791	32,158	$5,926,397
MUFG	Mitsubishi Ufj Financial Group Inc	+10,023	497,504	$11,477,417
MSFT	Microsoft Corp	+9,884	167,723	$86,025,126
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
NVS	Novartis AG	−82,730	9,010	$1,284,555
NFLX	Netflix Inc	−33,739	282,732	$19,672,492
ALC	Alcon Inc	−26,862	19,369	$1,254,142
CRM	Salesforce, Inc.	−25,088	19,866	$4,560,637
CYATY	Contemporary Amperex Technology Co., Limited	−23,316	186,459	$2,858,416
AMAT	Applied Materials Inc	−22,966	26,238	$13,417,588
FR	First Industrial Realty Trust Inc	−20,408	39,722	$2,365,047
IX	Orix Corp	−15,596	150,353	$5,669,811
STLD	Steel Dynamics Inc	−10,912	29,764	$6,596,000
TSM	Taiwan Semiconductor Manufacturing Co Ltd	−10,593	254,658	$116,172,433
NUSC	Nuveen ESG Small-Cap ETF	−9,744	409,886	$19,889,718
SPOT	Spotify Technology S.A.	−7,969	41,963	$20,451,926
PANW	Palo Alto Networks Inc	−7,173	35,393	$14,061,992
BBVA	Banco Bilbao Vizcaya Argentaria, S.A.	−6,165	221,016	$6,159,715
SBS	Companhia De Saneamento Basico Do Estado De Sao Paulo-Sabesp	−4,755	964,141	$5,119,588
NVDA	Nvidia Corp	−4,023	360,821	$82,404,299
ADI	Analog Devices Inc	−3,722	34,458	$13,669,833
GOOG	Alphabet Inc.	−3,704	106,431	$36,265,298
MS	Morgan Stanley	−3,067	154,972	$29,147,133
BAC	Bank Of America Corp	−2,736	207,821	$11,311,697
CIB	Grupo Cibest S.A.	−2,500	64,602	$5,998,295
ITUB	Itau Unibanco Holding S.A.	−1,600	1,170,891	$9,987,700
CB	Chubb Ltd	−1,092	50,193	$16,325,273
TJX	Tjx Companies Inc	−479	108,085	$14,300,726
BKNG	Booking Holdings Inc.	−453	42,720	$6,959,515
No positions match the current search.

New Positions

Positions the filer opened this quarter

4 positions

Ticker	Company	Shares	Value
LEVI	Levi Strauss & Co	164,815	$3,246,855
ABBV	AbbVie Inc.	11,064	$2,894,231
SKHY	SK hynix Inc.	3,641	$670,490
NULV	Nuveen ESG Large-Cap Value ETF	9,462	$498,174
No positions match the current search.

Sold Out

Positions the filer fully exited

8 positions

Ticker	Company	Shares	Value
CRH	Crh Public Ltd Co	162,587	$17,396,809
AON	Aon plc	23,874	$7,918,767
ES	Eversource Energy	11,253	$813,254
FERG	Ferguson Enterprises Inc.	1,718	$407,732
FISV	Fiserv Inc	5,153	$252,754
ED	Consolidated Edison Inc	1,970	$217,941
MDY	Spdr S&P Midcap 400 ETF Trust	300	$211,002
ITW	Illinois Tool Works Inc	752	$203,393
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

128 tracked positions · $1,543,203,056 total · filing declares 181 positions · $1,724,719,999 · as of Sep 30, 2026

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

Showing 1–50 of 128 positions by value · page 1 of 3

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
TSM	Taiwan Semiconductor Manufacturing Co Ltd Technology	Reduced	254,658	-10,593	$116,172,433	−8.3%	7.53%
MSFT	Microsoft Corp Technology	Added	167,723	+9,884	$86,025,126	+46.1%	5.57%
NVDA	Nvidia Corp Technology	Reduced	360,821	-4,023	$82,404,299	+12.9%	5.34%
AAPL	Apple Inc. Technology	Added	233,653	+8,640	$77,811,122	+19.5%	5.04%
GOOGL	Alphabet Inc. Communication Services	Added	148,215	+5,716	$50,997,817	+0.1%	3.30%
AVGO	Broadcom Inc. Technology	Added	121,497	+8,422	$42,668,531	−0.1%	2.76%
GOOG	Alphabet Inc. Communication Services	Reduced	106,431	-3,704	$36,265,298	−6.8%	2.35%
V	Visa Inc. Financial Services	Added	91,514	+2,692	$32,883,725	+7.9%	2.13%
MRK	Merck & Co., Inc. Healthcare	Added	214,998	+16,770	$31,241,359	+22.6%	2.02%
MU	Micron Technology Inc Technology	Added	28,208	+4,630	$30,044,622	+10.4%	1.95%
MS	Morgan Stanley Financial Services	Reduced	154,972	-3,067	$29,147,133	−11.8%	1.89%
LLY	ELI LILLY & Co Healthcare	Added	24,195	+1,638	$27,995,550	+3.5%	1.81%
DGX	Quest Diagnostics Inc Healthcare	Added	102,025	+6,329	$23,778,966	+17.2%	1.54%
WAB	Westinghouse Air Brake Technologies Corp Industrials	Added	74,922	+2,349	$21,516,099	+10.0%	1.39%
CL	Colgate Palmolive Co Consumer Defensive	Added	247,061	+16,057	$21,079,244	−0.5%	1.37%
HUBB	Hubbell Inc Industrials	Added	46,350	+3,025	$21,024,360	−7.2%	1.36%
SPOT	Spotify Technology S.A. Communication Services	Reduced	41,963	-7,969	$20,451,926	−10.8%	1.33%
NUSC	Nuveen ESG Small-Cap ETF	Reduced	409,886	-9,744	$19,889,718	−9.1%	1.29%
NFLX	Netflix Inc Communication Services	Reduced	282,732	-33,739	$19,672,492	−12.9%	1.27%
HPE	Hewlett Packard Enterprise Co Technology	Added	292,579	+246,802	$18,692,872	+805.2%	1.21%
VRT	Vertiv Holdings Co Industrials	Added	75,065	+1,162	$18,113,935	−26.8%	1.17%
AWK	American Water Works Company, Inc. Utilities	Added	134,519	+7,972	$17,416,174	+4.6%	1.13%
BNY	Bank of New York Mellon Corp Financial Services	Added	117,603	+8,426	$17,008,921	+7.7%	1.10%
CB	Chubb Ltd Financial Services	Reduced	50,193	-1,092	$16,325,273	−6.6%	1.06%
VZ	Verizon Communications Inc Communication Services	Added	344,081	+37,416	$15,782,995	+21.6%	1.02%
XYL	Xylem Inc. Industrials	Added	150,056	+7,098	$15,196,171	−10.1%	0.98%
EW	Edwards Lifesciences Corp Healthcare	Added	173,996	+13,182	$15,019,334	+3.2%	0.97%
GILD	Gilead Sciences, Inc. Healthcare	Added	99,047	+14,584	$14,762,955	+38.3%	0.96%
TJX	Tjx Companies Inc Consumer Cyclical	Reduced	108,085	-479	$14,300,726	−13.1%	0.93%
PANW	Palo Alto Networks Inc Technology	Reduced	35,393	-7,173	$14,061,992	−3.1%	0.91%
SCHW	Schwab Charles Corp Financial Services	Added	141,980	+25,043	$13,877,125	+28.6%	0.90%
ADI	Analog Devices Inc Technology	Reduced	34,458	-3,722	$13,669,833	−9.9%	0.89%
FITB	Fifth Third Bancorp Financial Services	Added	266,083	+29,995	$13,458,478	+1.1%	0.87%
AMAT	Applied Materials Inc Technology	Reduced	26,238	-22,966	$13,417,588	−62.3%	0.87%
TMUS	T-Mobile US, Inc. Communication Services	Added	81,585	+6,425	$13,304,881	+5.5%	0.86%
MET	Metlife Inc Financial Services	Added	140,761	+32,476	$13,254,055	+44.7%	0.86%
ECL	Ecolab Inc. Basic Materials	Reduced	48,177	-26	$13,228,440	−1.5%	0.86%
EMR	Emerson Electric Co Industrials	Added	85,188	+6,886	$13,212,658	+17.9%	0.86%
HASI	HA Sustainable Infrastructure Capital, Inc. Financial Services	Added	358,948	+21,235	$12,857,517	−2.5%	0.83%
HDB	Hdfc Bank Ltd Financial Services	Added	561,298	+46,980	$12,539,397	−5.6%	0.81%
WM	Waste Management Inc Industrials	Added	61,131	+5,236	$12,465,833	+0.1%	0.81%
EBAY	Ebay Inc Consumer Cyclical	Added	116,985	+14,433	$12,406,259	+8.3%	0.80%
CBRE	Cbre Group, Inc. Real Estate	Added	95,905	+5,238	$12,320,915	+0.9%	0.80%
DHR	Danaher Corp Healthcare	Added	54,806	+5,403	$12,142,269	+29.0%	0.79%
VRTX	Vertex Pharmaceuticals Inc Healthcare	Added	23,215	+3,722	$12,137,034	+25.3%	0.79%
MUFG	Mitsubishi Ufj Financial Group Inc Financial Services	Added	497,504	+10,023	$11,477,417	+18.4%	0.74%
BAC	Bank Of America Corp Financial Services	Reduced	207,821	-2,736	$11,311,697	−5.7%	0.73%
CME	Cme Group Inc. Financial Services	Added	42,877	+4,500	$11,232,916	+32.5%	0.73%
ASML	Asml Holding NV Technology	Added	5,898	+1,598	$10,685,229	+24.9%	0.69%
COST	Costco Wholesale Corp Consumer Defensive	Reduced	11,297	-164	$10,284,110	−4.1%	0.67%

Showing the top 50 of 128 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.