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BRIGHT ROCK CAPITAL MANAGEMENT, LLC
Long Only Manager
BRIGHT ROCK CAPITAL MANAGEMENT, LLC is a Long Only Manager based in Hanover, MA led by David Byron Smith, managing $510.2M across 73 long positions as of Q3 2025 with MSFT as the largest holding (6% allocation).
CIODavid Byron Smith
- Portfolio Value
- $510.2M
- Positions
- 73
- Top Holding
- MSFT at 6.5%
- Last Reported
- Q3 2025
Top Holdings
Largest long holdings in BRIGHT ROCK CAPITAL MANAGEMENT, LLC's portfolio (34.3% of total portfolio)
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| Holding | Sector | Position | Weight | Traded | Ownership |
|---|---|---|---|---|---|
Software - Infrastructure Technology | $33.1M | 6.50% | — | 0.00% 64.0K shares | |
Internet Content & Information Communication Services | $31.6M | 6.19% | -$4.9M Sold | 0.00% 130.0K shares | |
Financial - Credit Services Financial Services | $17.1M | 3.34% | — | 0.00% 30.0K shares | |
Consumer Electronics Technology | $14.3M | 2.79% | — | 0.00% 56.0K shares | |
ETF ETF | $14.3M | 2.79% | — | — 300.0K shares | |
Apparel - Retail Consumer Cyclical | $13.4M | 2.62% | — | 0.01% 92.5K shares | |
Medical - Diagnostics & Research Healthcare | $13.3M | 2.61% | — | 0.01% 27.5K shares | |
Medical - Healthcare Information Services Healthcare | $12.8M | 2.51% | — | 0.03% 43.0K shares | |
Insurance - Property & Casualty Financial Services | $12.7M | 2.49% | — | 0.01% 45.0K shares | |
Railroads Industrials | $12.6M | 2.48% | — | 0.01% 53.5K shares |
Changes
Portfolio activity, position movements, and quarter-over-quarter changes in BRIGHT ROCK CAPITAL MANAGEMENT, LLC's latest filing
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Market Value
Q/Q Change
Net Flows % of MV
Turnover Ratio
New Purchases
Added To
Sold Out Of
Reduced Holdings
Increased Positions
| Position | Shares Δ |
|---|---|
+300.0% | |
+50.0% |
Decreased Positions
| Position | Shares Δ |
|---|---|
Sold | |
Sold | |
-22.22% | |
-13.33% |
Analytics
Portfolio insights and performance metrics for BRIGHT ROCK CAPITAL MANAGEMENT, LLC
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