SEC 13F Intelligence

Managers / Q2 2025 · view latest →

S&CO INC

CIK 0001082461 · 50 CONGRESS STREET ROOM 800, BOSTON, MA, 02109 · 6172278660

Reported Value
$1.6B
Q2 2025
Positions
223
Filings on Record
29
2019–present window
Filed
Aug 7, 2025
original filing

Summary

S&Co Inc reported $1.6B in U.S.-listed holdings across 223 positions for Q2 2025.

Its largest position, MSFT, represents 5.3% of the portfolio.

Compared with Q1 2025, the fund opened 13 new positions and exited 7.

Portfolio Metrics

Turnover
+5.6%
vs prior filed quarter
Top-10 Concentration
+37.9%
share of reported value
Largest Position
+5.3%
Microsoft
New / Exited
13 / 7
positions this quarter

Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded, with multiple share classes and repeated sub-manager rows for the same issuer combined into one position — the same rule the holdings table uses by default. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.

Reported Value by Quarter

13F Reported Value
Q1 ’19: $898MQ1 ’19Q2 ’19: $911MQ3 ’19: $903MQ4 ’19: $958MQ1 ’20: $749MQ1 ’20Q4 ’20: $1.1BQ1 ’21: $1.2BQ2 ’21: $1.3BQ3 ’21: $1.3BQ3 ’21Q4 ’21: $1.4BQ1 ’22: $1.4BQ2 ’22: $1.2BQ3 ’22: $1.1BQ3 ’22Q4 ’22: $1.1BQ1 ’23: $1.2BQ2 ’23: $1.2BQ3 ’23: $1.2BQ3 ’23Q4 ’23: $1.3BQ1 ’24: $1.4BQ2 ’24: $1.4BQ3 ’24: $1.5BQ3 ’24Q4 ’24: $1.5BQ1 ’25: $1.5BQ2 ’25: $1.6BQ3 ’25: $1.6BQ3 ’25Q4 ’25: $1.6BQ1 ’26: $1.6Bfilingsflow.com

Portfolio Composition

By security type
Common Stock: 76.6%Other: 17.1%Tracking Stk: 2.4%ADR: 2.1%ETP: 1.7%Closed-End Fund: 0.0%
  • Common Stock · 76.6% · $1.2B
  • Other · 17.1% · $267M
  • Tracking Stk · 2.4% · $38M
  • ADR · 2.1% · $33M
  • ETP · 1.7% · $27M
  • Closed-End Fund · 0.0% · $705,000

Quarter-over-Quarter Changes full breakdown →

vs Q1 2025 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
INSMINSMED INCORPORATEDNEW+8.3K8.3K+$835,000$835,000
TRAVERE THERAPEUTICS, INC.NEW+28.0K28.0K+$414,000$414,000
NETFLIX INC COMNEW+200200+$267,000$267,000
MPMP MATERIALS CORP CLASS ANEW+8.0K8.0K+$266,000$266,000
BEPCBROOKFIELD RENEWABLE PARTNERSNEW+10.0K10.0K+$255,000$255,000
FICOFAIR ISAAC CORP COMNEW+130130+$237,000$237,000
APPLOVIN CORPORATION (QSBS STONEW+675675+$236,000$236,000
MONDAY.COMNEW+745745+$234,000$234,000

Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.

Holdings — Q2 2025

221 positions (from 223 filing rows — )
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1MSFTMICROSOFT CORPhistory →COM5.30%$83M166.2K
2BRK/BBERKSHIRE HATHAWAY INC CL Bhistory →COM5.17%$81M166.0K
3ADPAUTOMATIC DATA PROCESSING INChistory →COM4.12%$64M208.2K
4CHDCHURCH & DWIGHT CO INChistory →COM4.00%$62M649.7K
5ECLECOLAB INChistory →COM3.96%$62M229.4K
6EXMOCEXXON MOBIL CORPhistory →COM3.79%$59M547.7K
7AAPLAPPLE INChistory →COM3.30%$52M251.1K
8CATCATERPILLAR INC COMhistory →COM2.92%$46M117.3K
9CCJCAMECO CORPhistory →COM2.72%$42M571.8K
10MOSMOSAIC CO/THEhistory →COM2.65%$41M1.13M
11AMZNAMAZON.COM INChistory →COM2.43%$38M172.4K
12MERCK & CO INCCOM2.16%$34M425.9K
13ABTABBOTT LABShistory →COM2.14%$33M245.0K
14APDAIR PRODUCTS & CHEMICALS INC Chistory →COM1.72%$27M94.9K
15PROSYPROSUS NV -SPON ADRhistory →COM1.69%$26M2.36M
16JNJJOHNSON & JOHNSONhistory →COM1.60%$25M163.7K
17SPDR GOLD TRUSTCOM1.57%$25M80.6K
18GOOGALPHABET INC CLASS Chistory →COM1.36%$21M119.4K
19BSXBOSTON SCIENTIFIC CORPhistory →COM1.22%$19M176.8K
20LIBERTY MEDIA CORP-LIBERTY LIVCOM1.17%$18M226.2K
21LBRDKLIBERTY BROADBAND-Chistory →COM1.15%$18M181.7K
22TMOTHERMO FISHER SCIENTIFIC INC Chistory →COM1.10%$17M42.2K
23PYPLPAYPAL HOLDINGS INChistory →COM1.09%$17M228.1K
24GOOGLALPHABET INC CAP STK CL Ahistory →COM1.08%$17M95.6K
25SIRISIRIUS XM HOLDINGS INChistory →COM1.06%$16M718.0K
26UNPUNION PACIFIC CORPhistory →COM1.03%$16M70.1K
27FULH.B. FULLER CO.history →COM1.02%$16M264.9K
28FMCFMC CORPhistory →COM1.00%$16M374.3K
29UNITEDHEALTH GROUP INC COMCOM0.92%$14M45.8K
30PANWPALO ALTO NETWORKS INChistory →COM0.87%$14M66.3K
31RPRXROYALTY PHARMA PLC CL Ahistory →COM0.83%$13M358.2K
32FWONKLIBERTY FORMULA ONE SER Chistory →COM0.82%$13M122.9K
33LINLINDE PLChistory →COM0.79%$12M26.1K
34ARANTERO RESOURCES CORPhistory →COM0.76%$12M295.7K
35NVIDIA CORP COMCOM0.76%$12M75.1K
36PEPPEPSICO INChistory →COM0.76%$12M89.2K
37CISCO SYSTEMS INC COMCOM0.73%$11M164.6K
38PURE STORAGE, INC.COM0.70%$11M190.4K
39APOAPOLLO ASSET MANAGEMENT INC.history →COM0.66%$10M72.9K
40GE AEROSPACE COM (NEW)COM0.66%$10M40.0K
41LILABLIBERTY LATIN AMERICA-CL ACOM0.64%$10M1.64M
42MIDDMIDDLEBY CORPORATIONCOM0.62%$10M66.8K
43MEDTRONIC PLCCOM0.61%$9M108.6K
44LLYELI LILLY & CO COMCOM0.60%$9M12.1K
45AFLAFLAC INC COMCOM0.57%$9M84.3K
46ROLROLLINS INC COMCOM0.57%$9M156.4K
47SPDR S&P BIOTECH ETFCOM0.56%$9M104.8K
48ABNBAIRBNB INC ACOM0.53%$8M62.4K
49LBRDALIBERTY BROADBAND SER ACOM0.51%$8M81.4K
50GE VERNOVA INCCOM0.50%$8M14.9K
51HDHOME DEPOT INC COMCOM0.49%$8M20.8K
52MAMASTERCARD INC - ACOM0.48%$7M13.3K
53VVISA INC. CL ACOM0.47%$7M20.6K
54JP MORGAN CHASE & COCOM0.45%$7M24.3K
55FWONALIBERTY MEDIA CORP-FORMULA-ACOM0.41%$6M67.9K
56EDWARDS LIFESCIENCES CORPCOM0.41%$6M82.1K
57SYKSTRYKER CORP.COM0.41%$6M16.0K
58ALKERMES PLCCOM0.40%$6M220.6K
59WORKDAY INC ACOM0.40%$6M26.0K
60ADIANALOG DEVICES INC COMCOM0.38%$6M24.8K
61GFL ENVIRONMENTALCOM0.37%$6M114.3K
623M COMPANY COMCOM0.37%$6M37.6K
63CHUBB LIMITEDCOM0.36%$6M19.6K
64ELESTEE LAUDER COMPANIES-CL ACOM0.36%$6M70.2K
65CHTRCHARTER COMMUNICATIONS INCCOM0.36%$6M13.9K
66VWOVANGUARD FTSE EMERGING MARKETCOM0.36%$6M112.0K
67OXYOCCIDENTAL PETROLEUM CORPCOM0.34%$5M124.9K
68MSMORGAN STANLEY COMCOM0.33%$5M36.2K
69IBMINTERNATIONAL BUSINESS MACHINECOM0.32%$5M16.8K
70VIGVANGUARD DIVIDEND APPRECIATIONCOM0.30%$5M23.1K
71CVXCHEVRON CORP NEW COMCOM0.30%$5M32.7K
72RTX CORP.COM0.30%$5M31.6K
73WEC ENERGY GROUP INC COMCOM0.29%$5M44.1K
74INTUINTUIT, INC.COM0.29%$5M5.8K
75LIBERTY GLOBAL LTD-CCOM0.28%$4M430.5K
76BIO-TECHNE CORPORATIONCOM0.28%$4M85.5K
77WATWATERS CORP COMCOM0.28%$4M12.6K
78BACBANK OF AMERICA CORPCOM0.28%$4M92.7K
79META PLATFORMS INCCOM0.27%$4M5.7K
80TELTE CONNECTIVITY PLCCOM0.26%$4M24.2K
81CTSHCOGNIZANT TECHNOLOGY SOLUTIONSCOM0.25%$4M49.7K
82IVWISHARES S&P 500/BARRA GROWTH ICOM0.24%$4M33.7K
83PGPROCTER & GAMBLE COCOM0.23%$4M22.6K
84INTERACTIVE BROKERS GROUP INCCOM0.23%$4M64.9K
85WFCWELLS FARGO & CO COMCOM0.23%$4M44.5K
86AKAMAI TECHNOLOGIESCOM0.23%$4M44.0K
87OKTAOKTA, INC.COM0.22%$3M34.9K
88CCITIGROUP INC COM NEWCOM0.22%$3M39.6K
89ALNYLAM PHARMACEUTICALS INCCOM0.21%$3M10.1K
90EATON CORP PLCCOM0.21%$3M9.0K
91VGKVANGUARD MSCI EUROPEAN INDEX ECOM0.20%$3M40.0K
92TJXTJX COS INC NEW COMCOM0.19%$3M24.1K
93EXPEDIA GROUP INC COMCOM0.19%$3M17.3K
94ISRGINTUITIVE SURGICAL, INC.COM0.18%$3M5.1K
95CONSTELLATION ENERGY CORPORATICOM0.18%$3M8.5K
96SUNRISE COMMUNICAT-CL ACOM0.17%$3M48.0K
97PPLIIAC INCCOM0.17%$3M69.4K
98DIGITALBRIDGE GROUP INCCOM0.17%$3M250.3K
99COSTCO WHOLESALE CORP COMCOM0.16%$3M2.6K
100LBTYBLIBERTY GLOBAL LTD-ACOM0.16%$3M253.0K

Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$1.6B218May 7, 202613F-HRchanges · EDGAR ↗
Q4 2025$1.6B218Feb 5, 202613F-HRchanges · EDGAR ↗
Q3 2025$1.6B222Nov 6, 202513F-HRchanges · EDGAR ↗
Q2 2025$1.6B223Aug 7, 202513F-HRchanges · EDGAR ↗
Q1 2025$1.5B217May 8, 202513F-HRchanges · EDGAR ↗
Q4 2024$1.5B210Feb 7, 202513F-HRchanges · EDGAR ↗
Q3 2024$1.5B219Nov 7, 202413F-HRchanges · EDGAR ↗
Q2 2024$1.4B217Aug 8, 202413F-HRchanges · EDGAR ↗
Q1 2024$1.4B210May 9, 202413F-HRchanges · EDGAR ↗
Q4 2023$1.3B192Feb 12, 202413F-HRchanges · EDGAR ↗
Q3 2023$1.2B184Nov 9, 202313F-HRchanges · EDGAR ↗
Q2 2023$1.2B183Aug 8, 202313F-HRchanges · EDGAR ↗
Q1 2023$1.2B180May 9, 202313F-HRchanges · EDGAR ↗
Q4 2022$1.1B179Feb 7, 202313F-HRchanges · EDGAR ↗
Q3 2022$1.1B184Nov 9, 202213F-HRchanges · EDGAR ↗
Q2 2022$1.2B187Aug 9, 202213F-HRchanges · EDGAR ↗
Q1 2022$1.4B189May 5, 202213F-HRchanges · EDGAR ↗
Q4 2021$1.4B193Feb 8, 202213F-HRchanges · EDGAR ↗
Q3 2021$1.3B187Nov 9, 202113F-HRchanges · EDGAR ↗
Q2 2021$1.3B188Jul 14, 202113F-HRchanges · EDGAR ↗
Q1 2021$1.2B184Apr 23, 202113F-HRchanges · EDGAR ↗
Q4 2020$1.1B181Jan 28, 202113F-HRchanges · EDGAR ↗
Q1 2020$749M168Apr 28, 202013F-HRchanges · EDGAR ↗
Q4 2019$958M179Jan 24, 202013F-HRchanges · EDGAR ↗
Q3 2019$903M181Oct 29, 201913F-HRchanges · EDGAR ↗
Q2 2019$911M186Jul 23, 201913F-HRchanges · EDGAR ↗
Q1 2019$898M193Apr 24, 201913F-HRchanges · EDGAR ↗

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.