Latest ALTAROCK PARTNERS LLC Stock Portfolio
$4.13Billion– No. of Holdings #8
ALTAROCK PARTNERS LLC Performance:
2026 Q1: -13.04%YTD: -13.04%2025: 8.05%
Performance for 2026 Q1 is -13.04%, and YTD is -13.04%, and 2025 is 8.05%.
About ALTAROCK PARTNERS LLC and 13F Hedge Fund Stock Holdings
ALTAROCK PARTNERS LP is a hedge fund based in Beverly, MA. On 2026-05-15, the fund reported it's updated stock portfolio. In the 13F Holdings report, ALTAROCK PARTNERS LP reported an equity portfolio of $4.1 Billions as of 31 Mar, 2026.
The top stock holdings of ALTAROCK PARTNERS LP are AMZN, TDG, MSFT. The fund has invested 38.2% of it's portfolio in AMAZON.COM INC and 25.5% of portfolio in TRANSDIGM GROUP INC.
They significantly reduced their stock positions in HILTON WORLDWIDE (HLT), ALPHABET INC-CL A (GOOG) and MICROSOFT CORP (MSFT). The fund showed a lot of confidence in some stocks as they added substantially to MOODYS CORP (MCO) and AMAZON.COM INC (AMZN).
The top stock holdings of ALTAROCK PARTNERS LP are AMZN, TDG, MSFT. The fund has invested 38.2% of it's portfolio in AMAZON.COM INC and 25.5% of portfolio in TRANSDIGM GROUP INC.
They significantly reduced their stock positions in HILTON WORLDWIDE (HLT), ALPHABET INC-CL A (GOOG) and MICROSOFT CORP (MSFT). The fund showed a lot of confidence in some stocks as they added substantially to MOODYS CORP (MCO) and AMAZON.COM INC (AMZN).
ALTAROCK PARTNERS LLC Equity Portfolio Value
Last Reported on: 15 May, 2026
ALTAROCK PARTNERS LLC Annual Return Estimates Vs S&P 500
Our best estimate is that ALTAROCK PARTNERS LP made a return of -13.04% in the last quarter. In trailing 12 months, it's portfolio return was -1.75%.
- Performance
- S&P 500
New Buys
Additions
| Ticker | % Inc. |
|---|---|
| moodys corp | 5.84 |
| amazon.com inc | 3.46 |
Additions to existing portfolio by ALTAROCK PARTNERS LLC
Reductions
| Ticker | % Reduced |
|---|---|
| hilton worldwide | -97.17 |
| alphabet inc-cl a | -74.38 |
| microsoft corp | -10.32 |
| transdigm group inc | -6.21 |
| mastercard inc-class a | -3.51 |
| visa inc-class a shrs | -3.48 |
ALTAROCK PARTNERS LLC reduced stake in above stock
Sold off
Sector Distribution
ALTAROCK PARTNERS LP has about 38.3% of it's holdings in Consumer Cyclical sector.
- Consumer Cyclical
- Industrials
- Financial Services
- Technology
| Sector | % |
|---|---|
| Consumer Cyclical | 38.3 |
| Industrials | 25.5 |
| Financial Services | 19.1 |
| Technology | 16.8 |
Market Cap. Distribution
ALTAROCK PARTNERS LP has about 100% of it's portfolio invested in the large-cap and mega-cap stocks.
- MEGA-CAP
- LARGE-CAP
| Category | % |
|---|---|
| MEGA-CAP | 65.2 |
| LARGE-CAP | 34.8 |
Stocks belong to which Index?
About 100% of the stocks held by ALTAROCK PARTNERS LP either belong to S&P 500 or RUSSELL 2000 index.
- S&P 500
| Index | % |
|---|---|
| S&P 500 | 100 |
ALTAROCK PARTNERS LLC Holdings Map
This heatmap illustrates the top 50 positions within the fund's portfolio.
Current Stock Holdings of ALTAROCK PARTNERS LLC
ALTAROCK PARTNERS LP has 8 stocks in it's portfolio. MSFT proved to be the most loss making stock for the portfolio. HLT was the most profitable stock for ALTAROCK PARTNERS LP last quarter.
Last Reported on: 15 May, 2026| Ticker | Namesorted ascending | % Portfolio | Shares Held | $ Value | Type | % Change | Options | |
|---|---|---|---|---|---|---|---|---|
| AMZN | amazon.com inc | 38.20 | 7,567,950 | 1,576,180,000 | added | 3.46 | ||
| GOOG | alphabet inc-cl a | 0.30 | 43,391 | 12,477,500 | reduced | -74.38 | ||
| HLT | hilton worldwide | 0.11 | 15,341 | 4,664,890 | reduced | -97.17 | ||
| MA | mastercard inc-class a | 6.33 | 522,836 | 261,240,000 | reduced | -3.51 | ||
| MCO | moodys corp | 9.11 | 862,036 | 376,063,000 | added | 5.84 | ||
| MSFT | microsoft corp | 16.75 | 1,867,540 | 691,306,000 | reduced | -10.32 | ||
| TDG | transdigm group inc | 25.54 | 909,168 | 1,053,690,000 | reduced | -6.21 | ||
| V | visa inc-class a shrs | 3.65 | 498,677 | 150,720,000 | reduced | -3.48 | ||