Altarock Partners LP reported 8 positions worth $4.24B for the quarter ended Jun 30, 2026, up 2.7% on the prior quarter. It opened 0 new positions, added to 3, trimmed 5 and exited 0. Its largest holding is Amazon Com Inc at 32.2% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| AMZN Amazon Com Inc | -1.84M | -24.3% | $438.06M | 32.21% |
| MCO Moodys Corp | -559.4K | -64.9% | $253.37M | 3.23% |
| TDG TransDigm Group INC | -33.4K | -3.7% | $44.51M | 27.51% |
| GOOGL Alphabet Inc. | -1,397 | -3.2% | $499.25K | 0.354% |
| HLT Hilton Worldwide Holdings Inc. | -139 | -0.9% | $45.93K | 0.118% |
No new positions this quarter.
No positions were closed this quarter.
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | AMZN Amazon Com Inc | Consumer Discretionary | 5.73M | $1.37B | 32.21% | -1.84M | -24.3% | Reduced | 0.05% |
| 2 | TDG TransDigm Group INC | Industrials | 875.8K | $1.17B | 27.51% | -33.4K | -3.7% | Reduced | 1.53% |
| 3 | MSFT Microsoft Corp | Technology | 2.33M | $870.81M | 20.54% | +466.9K | +25.0% | Added | 0.03% |
| 4 | MA Mastercard Inc | Financial Services | 764.5K | $392.65M | 9.26% | +241.7K | +46.2% | Added | 0.09% |
| 5 | V Visa Inc. | Financial Services | 836.5K | $286.98M | 6.77% | +337.8K | +67.7% | Added | 0.05% |
| 6 | MCO Moodys Corp | Financial Services | 302.6K | $137.06M | 3.23% | -559.4K | -64.9% | Reduced | 0.17% |
| 7 | GOOGL Alphabet Inc. | Technology | 42.0K | $15.01M | 0.354% | -1,397 | -3.2% | Reduced | 0% |
| 8 | HLT Hilton Worldwide Holdings Inc. | Consumer Discretionary | 15.2K | $5.02M | 0.118% | -139 | -0.9% | Reduced | 0.01% |
Tip. Select a row to see that position’s full history at Altarock Partners.
As of its Q2 2026 13F filing, Altarock Partners LP’s five largest positions were Amazon Com Inc (AMZN) at 32.2%, TransDigm Group INC (TDG) at 27.5%, Microsoft Corp (MSFT) at 20.5%, Mastercard Inc (MA) at 9.3%, Visa Inc. (V) at 6.8% of the reported portfolio.
Altarock Partners LP reported a 13F portfolio worth $4.24B across 8 positions for Q2 2026. That is up 2.7% from the previous quarter.
Its largest purchases by value were Microsoft Corp ($174.18M), Mastercard Inc ($124.12M), Visa Inc. ($115.89M). It opened 0 new positions.
Its largest sales by value were Amazon Com Inc ($438.06M), Moodys Corp ($253.37M), TransDigm Group INC ($44.51M). It exited 0 positions entirely.
From the Form 13F-HR reports Altarock Partners LP files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.