Altarock Partners LP
In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 14, 2025), Altarock Partners LP reported 9 stock positions worth $5.0 billion. Its top holding was Transdigm (TDG) at 27.3% of the portfolio, followed by Amazon.com (AMZN, 19.9%) and Microsoft (MSFT, 19.5%). Compared with Q4 2024, it sold out of 1, added to 2 and reduced 4. The biggest buy was Microsoft (MSFT, shares +36%) and the biggest sale Amazon.com (AMZN, shares −1%).
- Most Recent 13F
- Q2 2026
- Location
- WEST PALM BEACH, FL
- CIK
- 0001631014
- Portfolio Value
- $5.0B (Q1 2025)
- SEC Filing
- 0001104659-25-048610 ↗ filed May 14, 2025
Holdings Value
Holdings 9 stocks · $5.0B
| TDG Transdigm Group Inc. | 27.26% | 979,950 | $1.4B | Reduce -2.1% |
| AMZN Amazon.com Inc. | 19.90% | 5,202,415 | $989.8M | Reduce -1.4% |
| MSFT Microsoft Corp. | 19.46% | 2,578,649 | $968.0M | Add +36.3% |
| GOOGL Alphabet Inc. Class A | 10.74% | 3,454,367 | $534.2M | Reduce -0.8% |
| MCO Moody's Corp. | 8.90% | 950,905 | $442.8M | No change |
| MA Mastercard Inc. Class A | 6.46% | 586,254 | $321.3M | No change |
| V Visa Inc. Class A | 5.99% | 850,412 | $298.0M | Reduce -2.8% |
| HLT Hilton Worldwide Holdings Inc. | 1.25% | 273,957 | $62.3M | Add +200.0% |
| FICO Fair Isaac Corp. | 0.02% | 670 | $1.2M | No change |
Portfolio Sells Q4 2024 → Q1 2025
Portfolio Buys Q4 2024 → Q1 2025
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 8 | $4.2B | AMZN, TDG, MSFT, MA, V |
| Q1 2026 | 8 | $4.1B | AMZN, TDG, MSFT, MCO, MA |
| Q4 2025 | 8 | $5.1B | AMZN, TDG, MSFT, MCO, MA |
| Q3 2025 | 9 | $5.5B | AMZN, MSFT, TDG, MCO, MA |
| Q2 2025 | 9 | $5.5B | TDG, AMZN, MSFT, MCO, MA |
| Q1 2025 | 9 | $5.0B | TDG, AMZN, MSFT, GOOGL, MCO |
| Q4 2024 | 10 | $4.9B | TDG, AMZN, MSFT, GOOGL, MCO |
| Q3 2024 | 9 | $5.1B | TDG, AMZN, MSFT, GOOGL, MCO |
| Q2 2024 | 9 | $4.9B | TDG, MSFT, AMZN, GOOGL, V |
| Q1 2024Amended | 8 | $4.7B | TDG, AMZN, MSFT, GOOGL, V |