S&CO INC
Long book
$1.61B
Q1 2026
Positions
218
Top-10 weight
39%
concentration
Last quarter
+10.0%
SPY +14.8%
Turnover
4%
of book per quarter
Strategy in plain words
auto-generated from filingsS&CO INC is an institutional manager, running a $1.61B US long book across 218 positions.
The portfolio is moderately concentrated (top 10 ≈ 39% of the book). The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: EXXON MOBIL CORP, BERKSHIRE HATHAWAY INC-CL B, MICROSOFT CORP, CATERPILLAR INC, CHURCH & DWIGHT CO INC.
Over the last 9 quarters its long book ran on average 1.5pp per quarter behind the S&P 500, beating the index in 3 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+0.9%
Q2 2024
+6.3%
Q3 2024
-1.9%
Q4 2024
+0.2%
Q1 2025
+5.3%
Q2 2025
+5.5%
Q3 2025
+1.4%
Q4 2025
-0.7%
Q1 2026
+10.0%
Sector allocation
Technology 22%
Healthcare 16%
Other 13%
Financials 10%
Industrials 9%
Energy 8%
Services media 5%
Materials 5%
Long book by quarter
What does S&CO INC own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| XOM EXXON MOBIL CORP | Energy | 526.0K | $89.2M | 5.5% | -0.2% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 164.1K | $78.6M | 4.9% | -0.1% |
| MSFT MICROSOFT CORP | Technology | 190.2K | $70.4M | 4.4% | +10.4% |
| CAT CATERPILLAR INC | Industrials | 98.8K | $70.0M | 4.3% | -6.2% |
| CHD CHURCH & DWIGHT CO INC | Other | 650.2K | $60.7M | 3.8% | +0.9% |
| ECL ECOLAB INC | Other | 226.1K | $60.1M | 3.7% | -0.4% |
| AAPL APPLE INC | Technology | 232.4K | $59.0M | 3.7% | -0.3% |
| MRK MERCK & CO. INC. | Healthcare | 425.5K | $51.2M | 3.2% | 0.0% |
| AMZN AMAZON.COM INC | Consumer discretionary | 197.2K | $41.1M | 2.5% | +3.5% |
| ADP AUTOMATIC DATA PROCESSING | Technology | 202.0K | $41.0M | 2.5% | -0.4% |
| JNJ JOHNSON & JOHNSON | Healthcare | 157.1K | $38.4M | 2.4% | -0.8% |
| CCJ CAMECO CORP | Materials | 327.6K | $35.6M | 2.2% | -8.1% |
| GOOG ALPHABET INC-CL C | Technology | 118.1K | $33.9M | 2.1% | -0.1% |
| APD AIR PRODUCTS & CHEMICALS INC | Materials | 94.4K | $27.4M | 1.7% | +0.4% |
| GOOGL ALPHABET INC-CL A | Technology | 95.1K | $27.3M | 1.7% | -0.2% |
| MOS MOSAIC CO/THE | Other | 963.7K | $24.6M | 1.5% | -1.0% |
| AR ANTERO RESOURCES CORP | Energy | 487.6K | $20.7M | 1.3% | +1.7% |
| TMO THERMO FISHER SCIENTIFIC INC | Other | 41.8K | $20.6M | 1.3% | -0.4% |
| ABT ABBOTT LABORATORIES | Healthcare | 199.7K | $20.5M | 1.3% | -11.9% |
| PYPL PAYPAL HOLDINGS INC | Services media | 445.3K | $20.1M | 1.2% | +28.8% |
| LLY ELI LILLY & CO | Healthcare | 21.5K | $19.8M | 1.2% | +6.5% |
| RPRX ROYALTY PHARMA PLC- CL A | Healthcare | 358.4K | $17.2M | 1.1% | Held |
| UNP UNION PACIFIC CORP | Industrials | 69.4K | $16.8M | 1.0% | Held |
| LLYVK LIBERTY LIVE HOLDINGS-C | Services media | 176.6K | $16.6M | 1.0% | Held |
| FUL H.B. FULLER CO. | Other | 261.2K | $16.1M | 1.0% | -0.7% |
| PANW PALO ALTO NETWORKS INC | Technology | 86.9K | $13.9M | 0.9% | +4.3% |
| SIRI SIRIUS XM HOLDINGS INC | Communications | 581.4K | $13.4M | 0.8% | -17.1% |
| LIN LINDE PLC | Materials | 26.1K | $12.9M | 0.8% | Held |
| NVDA NVIDIA CORP | Technology | 72.2K | $12.6M | 0.8% | -9.7% |
| PEP PEPSICO INC | Consumer staples | 77.0K | $12.0M | 0.7% | -6.4% |
| UNH UNITEDHEALTH GROUP INC | Financials | 44.1K | $11.9M | 0.7% | +8.3% |
| V VISA INC-CLASS A SHARES | Services media | 37.6K | $11.3M | 0.7% | +19.2% |
| P EVERPURE INC-A | Technology | 190.4K | $11.2M | 0.7% | Held |
| MA MASTERCARD INC - A | Services media | 21.5K | $10.7M | 0.7% | +31.0% |
| GEV GE VERNOVA INC | Industrials | 12.2K | $10.7M | 0.7% | -6.4% |
| BSX BOSTON SCIENTIFIC CORP | Healthcare | 169.8K | $10.7M | 0.7% | -0.6% |
| GE GENERAL ELECTRIC | Industrials | 37.5K | $10.6M | 0.7% | 0.0% |
| FWONK LIBERTY MEDIA CORP-FORMULA-C | Communications | 122.5K | $10.4M | 0.6% | 0.0% |
| AZN ASTRAZENECA PLC | Healthcare | 50.8K | $9.8M | 0.6% | New |
| MDT MEDTRONIC PLC | Healthcare | 108.1K | $9.4M | 0.6% | Held |
| AFL AFLAC INC | Financials | 83.6K | $9.2M | 0.6% | Held |
| ALKS ALKERMES PLC | Healthcare | 244.8K | $8.7M | 0.5% | +21.3% |
| GFL GFL ENVIRONMENTAL INC-SUB VT | Utilities | 203.2K | $8.5M | 0.5% | +15.7% |
| ROL ROLLINS INC | Services media | 156.4K | $8.4M | 0.5% | Held |
| CSCO CISCO SYSTEMS INC | Technology | 107.5K | $8.3M | 0.5% | -0.9% |
| ADI ANALOG DEVICES INC | Technology | 24.8K | $7.9M | 0.5% | Held |
| ABNB AIRBNB INC-CLASS A | Services media | 62.4K | $7.9M | 0.5% | Held |
| JPM JPMORGAN CHASE & CO | Financials | 23.9K | $7.0M | 0.4% | Held |
| APO APOLLO GLOBAL MANAGEMENT INC | Financials | 62.9K | $7.0M | 0.4% | Held |
| HD HOME DEPOT INC | Consumer discretionary | 20.9K | $6.9M | 0.4% | Held |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 7, 2026 | 218 | $1.61B | $K fixed canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 5, 2026 | 218 | $1.61B | $K fixed canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 6, 2025 | 222 | $1.63B | $K fixed canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 7, 2025 | 223 | $1.56B | $K fixed canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 8, 2025 | 217 | $1.49B | $K fixed canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 7, 2025 | 210 | $1.47B | $K fixed canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 7, 2024 | 219 | $1.53B | $K fixed canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 8, 2024 | 217 | $1.43B | $K fixed canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 9, 2024 | 210 | $1.42B | $K fixed canonical | SEC ↗ |
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