Altarock Partners LP
In its 13F for Q2 2025 (holdings as of June 30, 2025, filed August 14, 2025), Altarock Partners LP reported 9 stock positions worth $5.5 billion. Its top holding was Transdigm (TDG) at 27.2% of the portfolio, followed by Amazon.com (AMZN, 25.1%) and Microsoft (MSFT, 23.4%). Compared with Q1 2025, it added to 3 and reduced 2. The biggest buy was Amazon.com (AMZN, shares +21%) and the biggest sale Alphabet Class A (GOOGL, shares −70%).
- Most Recent 13F
- Q2 2026
- Location
- WEST PALM BEACH, FL
- CIK
- 0001631014
- Portfolio Value
- $5.5B (Q2 2025)
- SEC Filing
- 0001104659-25-078208 ↗ filed Aug 14, 2025
Holdings Value
Holdings 9 stocks · $5.5B
| TDG Transdigm Group Inc. | 27.21% | 979,950 | $1.5B | No change |
| AMZN Amazon.com Inc. | 25.14% | 6,275,906 | $1.4B | Add +20.6% |
| MSFT Microsoft Corp. | 23.42% | 2,578,649 | $1.3B | No change |
| MCO Moody's Corp. | 8.72% | 952,254 | $477.6M | Add +0.1% |
| MA Mastercard Inc. Class A | 6.01% | 586,254 | $329.4M | No change |
| V Visa Inc. Class A | 3.47% | 535,412 | $190.1M | Reduce -37.0% |
| GOOGL Alphabet Inc. Class A | 3.36% | 1,045,429 | $184.2M | Reduce -69.7% |
| HLT Hilton Worldwide Holdings Inc. | 2.65% | 544,596 | $145.0M | Add +98.8% |
| FICO Fair Isaac Corp. | 0.02% | 670 | $1.2M | No change |
Portfolio Sells Q1 2025 → Q2 2025
Portfolio Buys Q1 2025 → Q2 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 |