S&CO INC

CIK

1082461

Location

BOSTON, MA

Portfolio Value

Mid $1,696,558,165

Diversification

Diversified

Filing Date

Global Rank

#1,786 / 8,798 ▼ 211 · as of Jun 2026

Top Industry

Drug Manufacturers - General 8.2%

Period ended 3 months ago

Filed Aug 6, 2026 · 2mo

26 quarters · since Mar 2020

Clone Performance

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

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Portfolio Concentration

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

Top Position

5.9%

+0.2 pts

Top 5

23.8%

+0.2 pts

Top 10

41.0%

+0.0 pts

HHI

232

Diversified−1

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	17.9%	$303,454,571	29
Healthcare	17.6%	$298,346,328	41
Industrials	11.4%	$193,684,361	39
Financial Services	11.2%	$190,737,721	24
Communication Services	9.6%	$162,153,796	15
Basic Materials	8.4%	$143,338,163	7
Energy	8.0%	$135,848,913	8
Consumer Defensive	5.2%	$87,860,387	10
Consumer Cyclical	5.0%	$85,569,696	11
Unclassified	5.0%	$84,198,299	11
Utilities	0.7%	$11,365,930	7

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

23 positions

Ticker	Company	Δ Shares	Shares	Value
GFL	GFL Environmental Inc.	+90,350	293,524	$10,798,747
MOS	Mosaic Co	+77,056	1,040,723	$22,052,920
AR	ANTERO RESOURCES Corp	+16,998	504,602	$17,731,714
MSFT	Microsoft Corp	+8,143	198,340	$73,984,786
PANW	Palo Alto Networks Inc	+4,927	91,852	$31,323,369
INSM	INSMED Inc	+4,700	13,000	$1,386,060
AAXJ	iShares MSCI All Country Asia ex Japan ETF	+4,584	58,894	$9,050,802
V	Visa Inc.	+4,337	41,890	$14,372,040
NEE	Nextera Energy Inc	+1,220	29,940	$2,627,833
TSLA	Tesla, Inc.	+1,070	7,181	$3,020,328
VLTO	Veralto Corp	+1,066	3,499	$310,291
VEU	Vanguard FTSE All-World Ex-US ETF	+890	203,794	$14,070,483
MA	Mastercard Inc	+877	22,358	$11,483,068
DHR	Danaher Corp /De/	+800	13,989	$2,664,624
LLY	ELI LILLY & Co	+781	22,300	$26,747,291
ORCL	Oracle Corp	+445	2,445	$358,314
APD	Air Products & Chemicals, Inc.	+166	94,594	$27,733,068
C	Citigroup Inc	+153	39,794	$5,569,568
LIN	Linde PLC	+87	26,139	$13,564,572
BWX	State Street SPDR Bloomberg International Treasury Bond ETF	+30	94,310	$14,924,557
EOG	Eog Resources Inc	+30	10,865	$1,409,516
ABBV	AbbVie Inc.	+20	5,877	$1,478,888
CEG	Constellation Energy Corp	+15	8,635	$2,144,674
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
LILA	Liberty Latin America Ltd.	−442,444	239,879	$2,179,647
DBRG	DigitalBridge Group, Inc.	−223,600	12,000	$189,360
OKTA	Okta, Inc.	−53,080	19,699	$2,687,928
GLIBA	Liberty Capital Corp/NV	−22,808	121,498	$2,619,496
FUL	Fuller H B Co	−19,390	241,781	$14,093,414
TECH	BIO-TECHNE Corp	−14,081	76,614	$5,412,779
CCJ	Cameco Corp	−13,948	313,626	$31,945,944
ABT	Abbott Laboratories	−13,199	186,521	$16,924,915
AZN	Astrazeneca PLC	−12,775	37,990	$7,203,663
SIRI	Sirius Xm Holdings Inc.	−12,221	569,206	$16,814,345
AAPL	Apple Inc.	−11,650	220,707	$63,863,777
PYPL	PayPal Holdings, Inc.	−9,253	436,017	$18,827,214
LBTYA	Liberty Global Ltd.	−7,750	643,658	$7,161,942
WDAY	Workday, Inc.	−7,449	18,663	$2,284,724
CAT	Caterpillar Inc	−4,751	94,076	$100,181,532
INTU	Intuit Inc.	−3,022	11,518	$3,006,198
IBKR	Interactive Brokers Group, Inc.	−2,950	60,130	$5,233,715
HON	Honeywell International Inc	−2,821	2,821	$631,621
RTX	RTX Corp	−2,535	28,883	$5,479,971
FWONA	Liberty Media Corp	−2,340	186,782	$17,282,108
—		−2,189	185,672	$6,176,733
BE	Bloom Energy Corp	−2,000	2,000	$605,400
LLYVA	Liberty Live Holdings, Inc.	−1,841	224,117	$23,459,636
GE	General Electric Co	−1,800	35,671	$13,331,322
TJX	Tjx Companies Inc /De/	−1,470	20,636	$3,126,354
No positions match the current search.

New Positions

Positions the filer opened this quarter

12 positions

Ticker	Company	Shares	Value
CF	CF Industries Holdings, Inc.	24,300	$2,630,718
RDDT	Reddit, Inc.	11,450	$1,987,491
UBER	Uber Technologies, Inc	23,300	$1,681,328
MELI	Mercadolibre Inc	900	$1,527,651
UTHR	UNITED THERAPEUTICS Corp	1,431	$775,358
HONA	Honeywell Aerospace Inc.	2,821	$623,666
ENPH	Enphase Energy, Inc.	9,000	$443,160
ROK	Rockwell Automation, Inc	605	$299,523
HXL	Hexcel Corp /De/	2,400	$240,144
ON	On Semiconductor Corp	2,200	$207,988
IEX	Idex Corp /De/	900	$204,255
BNY	Bank of New York Mellon Corp	1,408	$203,610
No positions match the current search.

Sold Out

Positions the filer fully exited

7 positions

Ticker	Company	Shares	Value
CTSH	Cognizant Technology Solutions Corp	28,935	$1,775,162
RARE	Ultragenyx Pharmaceutical Inc.	25,255	$529,092
IQV	Iqvia Holdings Inc.	3,000	$511,620
CHTR	Charter Communications, Inc. /Mo/	1,128	$243,512
APTV	Aptiv PLC	3,000	$208,320
CLNE	Clean Energy Fuels Corp.	60,000	$148,800
—		6,000	$0
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

202 tracked positions · $1,696,558,165 total · filing declares 222 positions · $1,731,078 · as of Jun 30, 2026

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

Showing 1–50 of 202 positions by value · page 1 of 5

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
CAT	Caterpillar Inc Industrials	Reduced	94,076	-4,751	$100,181,532	+43.1%	5.90%
BRK-B	Berkshire Hathaway Inc Financial Services	Held	164,075	0	$82,101,489	+4.4%	4.84%
GOOGL	Alphabet Inc. Communication Services	Reduced	212,970	-230	$75,631,912	+23.5%	4.46%
MSFT	Microsoft Corp Technology	Added	198,340	+8,143	$73,984,786	+5.1%	4.36%
XOM	ExxonMobil Holdings Corp Energy	Held	526,003	0	$71,915,130	−19.4%	4.24%
AAPL	Apple Inc. Technology	Reduced	220,707	-11,650	$63,863,777	+8.3%	3.76%
CHD	Church & Dwight Co Inc /De/ Consumer Defensive	Reduced	649,655	-575	$62,938,576	+3.7%	3.71%
ECL	Ecolab Inc. Basic Materials	Reduced	225,862	-198	$62,927,411	+4.6%	3.71%
MRK	Merck & Co., Inc. Healthcare	Held	425,528	0	$54,680,348	+6.8%	3.22%
AMZN	Amazon Com Inc Consumer Cyclical	Reduced	196,975	-178	$46,947,021	+14.3%	2.77%
ADP	Automatic Data Processing Inc Technology	Held	201,978	0	$45,232,973	+10.2%	2.67%
JNJ	Johnson & Johnson Healthcare	Held	157,098	0	$39,898,179	+3.9%	2.35%
CCJ	Cameco Corp Energy	Reduced	313,626	-13,948	$31,945,944	−10.2%	1.88%
PANW	Palo Alto Networks Inc Technology	Added	91,852	+4,927	$31,323,369	+124.8%	1.85%
GLD	Spdr Gold Trust	Held	80,565	0	$29,678,534	−14.4%	1.75%
APD	Air Products & Chemicals, Inc. Basic Materials	Added	94,594	+166	$27,733,068	+1.1%	1.63%
LLY	ELI LILLY & Co Healthcare	Added	22,300	+781	$26,747,291	+35.1%	1.58%
LLYVA	Liberty Live Holdings, Inc. Communication Services	Reduced	224,117	-1,841	$23,459,636	+11.0%	1.38%
MOS	Mosaic Co Basic Materials	Added	1,040,723	+77,056	$22,052,920	−10.3%	1.30%
TMO	Thermo Fisher Scientific Inc. Healthcare	Reduced	41,387	-440	$20,749,786	+0.9%	1.22%
RPRX	Royalty Pharma plc Healthcare	Reduced	358,302	-75	$20,089,993	+16.9%	1.18%
UNP	Union Pacific Corp Industrials	Held	69,353	0	$18,864,016	+12.1%	1.11%
PYPL	PayPal Holdings, Inc. Financial Services	Reduced	436,017	-9,253	$18,827,214	−6.5%	1.11%
UNH	Unitedhealth Group Inc Healthcare	Reduced	43,984	-88	$18,281,069	+53.3%	1.08%
AR	ANTERO RESOURCES Corp Energy	Added	504,602	+16,998	$17,731,714	−14.3%	1.05%
FWONA	Liberty Media Corp Communication Services	Reduced	186,782	-2,340	$17,282,108	+10.7%	1.02%
ABT	Abbott Laboratories Healthcare	Reduced	186,521	-13,199	$16,924,915	−17.5%	1.00%
SIRI	Sirius Xm Holdings Inc. Communication Services	Reduced	569,206	-12,221	$16,814,345	+25.3%	0.99%
P	Everpure, Inc. Technology	Held	190,420	0	$15,003,191	+33.5%	0.88%
BWX	State Street SPDR Bloomberg International Treasury Bond ETF	Added	94,310	+30	$14,924,557	+23.9%	0.88%
NVDA	Nvidia Corp Technology	Held	72,156	0	$14,437,694	+14.7%	0.85%
V	Visa Inc. Financial Services	Added	41,890	+4,337	$14,372,040	+26.6%	0.85%
FUL	Fuller H B Co Basic Materials	Reduced	241,781	-19,390	$14,093,414	−12.5%	0.83%
VEU	Vanguard FTSE All-World Ex-US ETF	Added	203,794	+890	$14,070,483	+10.3%	0.83%
GEV	GE Vernova Inc. Industrials	Reduced	11,732	-509	$13,783,457	+29.0%	0.81%
LIN	Linde PLC Basic Materials	Added	26,139	+87	$13,564,572	+5.0%	0.80%
GE	General Electric Co Industrials	Reduced	35,671	-1,800	$13,331,322	+25.4%	0.79%
ALKS	Alkermes plc. Healthcare	Held	244,760	0	$12,825,424	+48.2%	0.76%
CSCO	Cisco Systems, Inc. Technology	Reduced	107,126	-420	$12,583,019	+50.8%	0.74%
MA	Mastercard Inc Financial Services	Added	22,358	+877	$11,483,068	+7.0%	0.68%
GFL	GFL Environmental Inc. Industrials	Added	293,524	+90,350	$10,798,747	+27.4%	0.64%
PEP	Pepsico Inc Consumer Defensive	Reduced	75,677	-1,305	$10,246,665	−14.3%	0.60%
AFL	Aflac Inc Financial Services	Held	83,570	0	$9,798,582	+6.9%	0.58%
ADI	Analog Devices Inc Technology	Reduced	23,789	-1,000	$9,448,277	+19.8%	0.56%
AAXJ	iShares MSCI All Country Asia ex Japan ETF	Added	58,894	+4,584	$9,050,802	—	0.53%
ABNB	Airbnb, Inc. Consumer Cyclical	Held	62,355	0	$8,923,000	+13.3%	0.53%
MDT	Medtronic plc Healthcare	Held	108,128	0	$8,458,853	−9.7%	0.50%
JPM	Jpmorgan Chase & Co Financial Services	Reduced	23,285	-650	$7,621,879	+8.3%	0.45%
APO	Apollo Global Management, Inc. Financial Services	Held	62,880	0	$7,439,332	+6.2%	0.44%
EW	Edwards Lifesciences Corp Healthcare	Held	81,497	0	$7,372,218	+13.0%	0.43%

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.