Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

S&CO INC 13F Holdings -- Portfolio & Top Positions (2026-06-30)

S&CO INC (CIK 1082461) reported $1.73B across 222 reported positions in its SEC 13F filing for 2026-06-30. Largest positions: CAT ($100.2M, 5.79%), BRKB ($82.1M, 4.74%), MSFT ($74.0M, 4.27%), XOM ($71.9M, 4.15%), AAPL ($63.9M, 3.69%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1CATCATERPILLAR INC.$100.2M5.79%94,076Trimmed
2BRKBBERKSHIRE HATHAWAY INC CL B$82.1M4.74%164,075Hold
3MSFTMICROSOFT CORP$74.0M4.27%198,340Added
4XOMEXXONMOBIL HOLDINGS CORP$71.9M4.15%526,003New
5AAPLAPPLE INC$63.9M3.69%220,707Trimmed
6ECLECOLAB INC$62.9M3.64%225,862Trimmed
7CHDCHURCH & DWIGHT CO INC$62.9M3.64%649,655Trimmed
8MRKMERCK & CO INC$54.7M3.16%425,528Hold
9AMZNAMAZON.COM INC$46.9M2.71%196,975Trimmed
10ADPAUTOMATIC DATA PROCESSING INC$45.2M2.61%201,978Hold
11GOOGALPHABET INC CLASS C$41.7M2.41%118,113Hold
12JNJJOHNSON & JOHNSON$39.9M2.30%157,098Hold
13GOOGLALPHABET INC CAP STK CL A$33.9M1.96%94,857Trimmed
14CCJCAMECO CORP$31.9M1.85%313,626Trimmed
15PANWPALO ALTO NETWORKS INC$31.3M1.81%91,852Added
16GLDSPDR GOLD TRUST$29.7M1.71%80,565Hold
17APDAIR PRODUCTS & CHEMICALS INC C$27.7M1.60%94,594Added
18LLYELI LILLY & CO COM$26.7M1.55%22,300Added
19MOSMOSAIC COMPANY$22.1M1.27%1.0MAdded
20PROSYPROSUS NV -SPON ADR$21.7M1.25%2.5MAdded
21TMOTHERMO FISHER SCIENTIFIC INC C$20.7M1.20%41,387Trimmed
22RPRXROYALTY PHARMA PLC CL A$20.1M1.16%358,302Trimmed
23PYPLPAYPAL HOLDINGS INC$18.8M1.09%436,017Trimmed
24UNPUNION PACIFIC CORP$18.9M1.09%69,353Hold
25LLYVKLIBERTY MEDIA CORP-LIBERTY LIV$18.5M1.07%174,783Trimmed

Source: SEC Form 13F filings · as of 2026-06-30