Altarock Partners LP
Altarock Partners LP reported 8 US-listed holdings worth $4.24 billion in its 13F for the quarter ended 30 June 2026, filed 17 August 2026. Its largest: Amazon.com Inc. (32.2%), TransDigm Group Inc. (27.5%) and Microsoft Corp. (20.5%). Against the quarter before, it opened 0 positions, added to 3, trimmed 5 and sold out of 0.
Reported holdings$4.24B+2.7% on Q1 2026
Positions8as many as Q1 2026
The largest ten100.0%of its reported holdings
Latest 13FQ2 2026filed 17 August 2026
Added toTrimmed
The 8 largest of its 8 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q1 2026.
What the fund reported holding at each quarter's end; hover a bar for the number of positions
What it did on the quarter
Added 3Trimmed 5
Its positions against its 13F for the quarter to 31 March 2026; a change under 0.1% of a position counts as held
Added to 3
- Microsoft Corp. MSFT+466,945 shares · +25%
- Mastercard Inc. MA+241,671 shares · +46%
- Visa Inc. V+337,793 shares · +68%
Trimmed 5
- Amazon.com Inc. AMZN-1.8 million shares · -24%
- Moody's Corp. MCO-559,412 shares · -65%
- TransDigm Group Inc. TDG-33,413 shares · -4%
- Alphabet Inc. GOOGL-1,397 shares · -3%
- Hilton Worldwide Holdings Inc. HLT-139 shares · -1%
What it holds
| Company | Shares | Value | Of its book | Change in shares |
|---|---|---|---|---|
| Amazon.com Inc. AMZN | 5,729,972 | $1.37 billion | 32.21% | -1,837,974 |
| TransDigm Group Inc. TDG | 875,755 | $1.17 billion | 27.51% | -33,413 |
| Microsoft Corp. MSFT | 2,334,482 | $870.8 million | 20.54% | +466,945 |
| Mastercard Inc. MA | 764,507 | $392.7 million | 9.26% | +241,671 |
| Visa Inc. V | 836,470 | $287.0 million | 6.77% | +337,793 |
| Moody's Corp. MCO | 302,624 | $137.1 million | 3.23% | -559,412 |
| Alphabet Inc. GOOGL | 41,994 | $15.0 million | 0.35% | -1,397 |
| Hilton Worldwide Holdings Inc. HLT | 15,202 | $5.0 million | 0.12% | -139 |
Every US-listed position in the fund's 13F for the quarter ended 30 June 2026, by the value it reported.