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ALTAROCK PARTNERS LLC
Hedge Fund • Value
ALTAROCK PARTNERS LLC is a Value-focused Hedge Fund based in West Palm Beach, FL led by Mark Thomas Massey, managing $5.5B across 9 long positions as of Q3 2025 with 33% Consumer Cyclical concentration, with only 9 positions, and 30% allocation to AMZN.
FounderMark Thomas Massey
- Portfolio Value
- $5.5B
- Positions
- 9
- Top Holding
- AMZN at 30.34%
- Last Reported
- Q3 2025
Top Holdings
Largest long holdings in ALTAROCK PARTNERS LLC's portfolio (100% of total portfolio)
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| Holding | Sector | Market Value | Weight | Traded | Ownership |
|---|---|---|---|---|---|
Specialty Retail Consumer Cyclical | $1.7B | 30.34% | +$281.6M Bought | 0.07% 7.6M shares | |
Software - Infrastructure Technology | $1.3B | 24.33% | -$4.9M Sold | 0.03% 2.6M shares | |
Aerospace & Defense Industrials | $1.3B | 23.53% | -$4.7M Sold | 1.73% 976.4K shares | |
Financial - Data & Stock Exchanges Financial Services | $452.1M | 8.27% | -$1.7M Sold | 0.53% 948.7K shares | |
Financial - Credit Services Financial Services | $332.2M | 6.07% | -$1.2M Sold | 0.06% 584.1K shares | |
Financial - Credit Services Financial Services | $182.1M | 3.33% | -$645.2K Sold | 0.03% 533.5K shares | |
Travel Lodging Consumer Cyclical | $140.8M | 2.57% | -$514.5K Sold | 0.23% 542.6K shares | |
Internet Content & Information Communication Services | $83.7M | 1.53% | -$170.4M Sold | 0.00% 344.4K shares | |
Software - Application Technology | $998.2K | 0.02% | -$4.5K Sold | 0.00% 667.0 shares |
Changes
Portfolio activity, position movements, and quarter-over-quarter changes in ALTAROCK PARTNERS 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 |
|---|---|
+20.43% |
Decreased Positions
| Position | Shares Δ |
|---|---|
-67.06% | |
-0.45% | |
-0.37% | |
-0.37% | |
-0.36% |
Analytics
Portfolio insights and performance metrics for ALTAROCK PARTNERS LLC
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