S&CO INC — 13F holdings

S&CO INC reported 222 holdings worth $1.73B in its 13F filing for Q2 2026, filed August 6, 2026.

Largest positions

1. CAT CATERPILLAR INC — $100M (5.8%)
2. BRK.B BERKSHIRE HATHAWAY INC DEL — $82.1M (4.7%)
3. MSFT MICROSOFT CORP — $74.0M (4.3%)
4. XOM EXXONMOBIL HOLDINGS CORP — $71.9M (4.2%)
5. AAPL APPLE INC — $63.9M (3.7%)
6. CHD CHURCH & DWIGHT CO INC — $62.9M (3.6%)
7. ECL ECOLAB INC — $62.9M (3.6%)
8. MRK MERCK & CO INC — $54.7M (3.2%)
9. AMZN AMAZON COM INC — $46.9M (2.7%)
10. ADP AUTOMATIC DATA PROCESSING IN — $45.2M (2.6%)