Managers / Q4 2023 · view latest →
S&CO INC
CIK 0001082461 · 50 CONGRESS STREET ROOM 800, BOSTON, MA, 02109 · 6172278660
Summary
S&Co Inc reported $1.3B in U.S.-listed holdings across 192 positions for Q4 2023.
Its largest position, AAPL, represents 4.8% of the portfolio.
Compared with Q3 2023, the fund opened 16 new positions and exited 8.
Portfolio Metrics
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
Portfolio Composition
- Common Stock · 71.4% · $932M
- Other · 22.9% · $299M
- Tracking Stk · 3.7% · $48M
- ETP · 1.6% · $21M
- ADR · 0.3% · $4M
- Closed-End Fund · 0.1% · $739,000
Quarter-over-Quarter Changes full breakdown →
vs Q3 2023 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| LIBERTY GLOBAL LTD | NEW | +432.5K | 432.5K | +$8M | $8M |
| MIDDMIDDLEBY CORPORATION | NEW | +42.5K | 42.5K | +$6M | $6M |
| LIBERTY GLOBAL LTD | NEW | +292.4K | 292.4K | +$5M | $5M |
| ELANCO ANIMAL HEALTH, INC | NEW | +120.0K | 120.0K | +$2M | $2M |
| HUMHUMANA INC. | NEW | +3.0K | 3.0K | +$1M | $1M |
| BAXBAXTER INTERNATIONAL INC | NEW | +33.9K | 33.9K | +$1M | $1M |
| NVIDIA CORP COM | NEW | +2.4K | 2.4K | +$1M | $1M |
| LIVENT CORP | NEW | +64.7K | 64.7K | +$1M | $1M |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q4 2023
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $1.6B | 218 | May 7, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $1.6B | 218 | Feb 5, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $1.6B | 222 | Nov 6, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $1.6B | 223 | Aug 7, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $1.5B | 217 | May 8, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $1.5B | 210 | Feb 7, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $1.5B | 219 | Nov 7, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $1.4B | 217 | Aug 8, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $1.4B | 210 | May 9, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $1.3B | 192 | Feb 12, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $1.2B | 184 | Nov 9, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $1.2B | 183 | Aug 8, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $1.2B | 180 | May 9, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $1.1B | 179 | Feb 7, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $1.1B | 184 | Nov 9, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $1.2B | 187 | Aug 9, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q1 2022 | $1.4B | 189 | May 5, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q4 2021 | $1.4B | 193 | Feb 8, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $1.3B | 187 | Nov 9, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $1.3B | 188 | Jul 14, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | $1.2B | 184 | Apr 23, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $1.1B | 181 | Jan 28, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $749M | 168 | Apr 28, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $958M | 179 | Jan 24, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $903M | 181 | Oct 29, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $911M | 186 | Jul 23, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $898M | 193 | Apr 24, 2019 | 13F-HR | changes · 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 ↗.