AltaRock PartnersSuperinvestor
About AltaRock Partners’s 13F portfolio
AltaRock Partners is an institutional investment manager that discloses its US-listed holdings each quarter through an SEC Form 13F filing. As of , AltaRock Partners reported $4.2B across 8 US-listed positions (). Its largest position is AMAZON.COM INC (AMZN) at 32% of the reported book, and its ten biggest holdings make up 100% of the portfolio. Browse every manager in the fund managers directory, or see the legendary investors we track on the superinvestors page.
| # | Stock | Price | % of portfolio | Shares | Value |
|---|---|---|---|---|---|
| 1 |  NASDAQ: AMZN AMAZON.COM INC | $260.28 −0.30% | 32% | 5.7M | $1.4B |
| 2 |  NYSE: TDG TRANSDIGM GROUP INC | $1,207.06 +1.21% | 28% | 876K | $1.2B |
| 3 |  NASDAQ: MSFT MICROSOFT CORP | $496.37 +0.95% | 21% | 2.3M | $870.8M |
| 4 |  NYSE: MA MASTERCARD INC-CLASS A | $598.47 −0.15% | 9.3% | 765K | $392.7M |
| 5 |  NYSE: V VISA INC-CLASS A SHRS | $383.90 −0.06% | 6.8% | 836K | $287.0M |
| 6 |  NYSE: MCO MOODYS CORP | $514.55 +0.28% | 3.2% | 303K | $137.1M |
| 7 |  NASDAQ: GOOGL ALPHABET INC-CL A | $342.00 −1.43% | 0.4% | 42K | $15.0M |
| 8 |  NYSE: HLT HILTON WORLDWIDE | $332.56 +0.99% | 0.1% | 15K | $5.0M |
Showing the 8 largest positions reported in this 13F.
- Consumer Cyclical32%
- Industrials28%
- Technology21%
- Financial Services19%
- Communication Services0.4%
Reading AltaRock Partners’s 13F portfolio
AltaRock Partners’s $4.2B 13F book is spread across 8 reported positions and is highly concentrated — its ten largest positions alone are 100% of the portfolio. A book this concentrated means a small group of names drives most of its performance. Its five largest positions are AMZN, TDG, MSFT, MA and V, led by AMAZON.COM INC (AMZN) at 32% of the portfolio. The heaviest sector exposure is Consumer Cyclical (32%), then Industrials (28%).
What a 13F does and doesn’t reveal
A 13F captures only AltaRock Partners’s long positions in US-listed stocks at a single quarter-end, so it is best read as a lagged snapshot rather than a live portfolio. It won’t show shorts, cash, bonds, or holdings listed outside the US, and it never reveals the price paid or the reasoning behind a trade. The signal is in the pattern over time: which names AltaRock Partners is building up, trimming, or exiting, and how concentrated the book stays from quarter to quarter.
Frequently asked questions
What is an SEC 13F filing?
A Form 13F is a report that every institutional investment manager with at least $100 million in US-listed securities must file with the SEC within 45 days of each quarter's end. It lists the manager's long positions in US-listed stocks and certain options, with the share count and market value of each. AltaRock Partners's profile on this page is built directly from those filings.
How current is the 13F data on AltaRock Partners's page?
It reflects AltaRock Partners's most recently filed 13F, currently the quarter ending Q2 2026. Because managers have up to 45 days after a quarter closes to file, a 13F is always a slightly lagged view rather than a live portfolio. When AltaRock Partners files its next quarterly report, this page refreshes automatically.
Can I see AltaRock Partners's complete list of holdings?
This page highlights AltaRock Partners's largest positions rather than all 8 names in the filing. The complete, position-by-position 13F is public and available from the SEC's EDGAR database under AltaRock Partners's filings.
Does a 13F show everything AltaRock Partners owns?
No. A 13F only covers long positions in US-listed stocks and certain options. It leaves out short positions, cash, bonds, commodities, foreign-listed stocks, and private holdings, so it is a partial view of AltaRock Partners's book rather than its full strategy or total assets.
Is 13F data investment advice?
No. Everything here is educational. 13F positions are disclosed with a delay, cover only long US-listed holdings, and never explain why AltaRock Partners made a trade or at what price. Treat it as a research lens, not a recommendation, and speak with a licensed financial advisor before making investment decisions.
Not investment advice. Holdings data comes from public SEC Form 13F filings, which are filed with a delay of up to 45 days and may be amended later. It describes historical, disclosed positions in US-listed securities only, meaning no shorts, cash, or foreign holdings, and it is not a recommendation. Always do your own research and speak with a licensed financial advisor before making investment decisions.