Altarock Partners Holdings 13F: Latest Portfolio Changes
Altarock Partners. Growth-oriented investment firm (~$5.1B AUM).
As of the latest Q1 2026 13F filing, Altarock Partners (managing Altarock Partners) reported a public portfolio value of $4.1B with 8 positions. This page tracks latest holdings, latest 13F changes, top buys, top sells, and top holdings from the public filing. The top recent buy was AMZN. The top recent sell was TDG.
Open interactive portfolioLatest 13F portfolio changes
Altarock Partners holdings 13F summary: the latest Altarock Partners portfolio changes show top holdings including Amazon, TRANSDIGM GROUP, Microsoft, MOODYS, and MASTERCARD INC-CLASS A, reported top buys such as Amazon and MOODYS, and top sells or reductions such as TRANSDIGM GROUP, Microsoft, MASTERCARD INC-CLASS A, and VISA INC-CLASS A SHRS.
Latest filing metadata: quarter Q1 2026; report date 2026-03-31; filing date 2026-05-15; disclosure source SEC 13F.
Altarock Partners 13F portfolio and latest holdings overview
Altarock Partners's Q1 2026 13F holdings show Altarock Partners reporting 8 positions with a disclosed portfolio value of $4.1B. For readers searching Altarock Partners 13F holdings, Altarock Partners portfolio, Altarock Partners holdings, or latest 13F changes, the latest top holdings include Amazon, TRANSDIGM GROUP, Microsoft, MOODYS, and MASTERCARD INC-CLASS A.
The three largest reported positions add up to roughly 80.5%, which helps readers judge portfolio concentration rather than just headline AUM. The largest reported sector exposure is Consumer Discretionary at 38.3% of the disclosed portfolio. This makes the page useful for comparing the manager's actual disclosed exposure with market narratives around the same names.
The latest change data highlights reported buys such as Amazon and MOODYS and reported reductions or exits such as TRANSDIGM GROUP, Microsoft, MASTERCARD INC-CLASS A, VISA INC-CLASS A SHRS, and Alphabet. Those changes should be read as historical disclosure signals, not as real-time trade alerts.
The filing metadata lists report date 2026-03-31, filing date 2026-05-15, SEC accession 0001104659-26-062170. SEC 13F reports are normally published up to 45 days after quarter end, so the data is best used to understand institutional positioning after the fact rather than to infer today's exact portfolio.
Altarock Partners portfolio analytics
the top five positions account for 95.9% of disclosed value; the largest sector exposure is Consumer Discretionary at 38.3%; reported buy and sell activity implies roughly 100.0% turnover this period; cost-basis P&L across 8 tracked positions averages 114.2% (3/3 currently in profit).
Top reported holdings
| Holding | Reported value | Weight | Quarter change |
|---|---|---|---|
| AMZN whale holders AMAZON.COM INC | $1.58B | 38.2% | Increased |
| TDG whale holders TRANSDIGM GROUP INC | $1.05B | 25.5% | Reduced |
| MSFT whale holders MICROSOFT CORP | $691.3M | 16.8% | Reduced |
| MCO whale holders MOODYS CORP | $376.1M | 9.1% | Increased |
| MA whale holders MASTERCARD INC-CLASS A | $261.2M | 6.3% | Reduced |
| V whale holders VISA INC-CLASS A SHRS | $150.7M | 3.6% | Reduced |
| GOOGL whale holders ALPHABET INC-CL A | $12.5M | 0.3% | Reduced |
| HLT whale holders HILTON WORLDWIDE | $4.7M | 0.1% | Reduced |
Top buys
- AMZN whale holders — AMAZON.COM INC ($1.58B)
- MCO whale holders — MOODYS CORP ($376.1M)
Top sells
- TDG whale holders — TRANSDIGM GROUP INC ($1.05B)
- MSFT whale holders — MICROSOFT CORP ($691.3M)
- MA whale holders — MASTERCARD INC-CLASS A ($261.2M)
- V whale holders — VISA INC-CLASS A SHRS ($150.7M)
- GOOGL whale holders — ALPHABET INC-CL A ($12.5M)
- HLT whale holders — HILTON WORLDWIDE ($4.7M)
Allocation
- Consumer Discretionary: 38.3%
- Industrials: 25.5%
- Financials: 19.1%
- Information Technology: 16.8%
- Communication Services: 0.3%
Data notes
Report date: 2026-03-31
Disclosure source: SEC 13F
SEC 13F filings are delayed public disclosures and do not include every asset class, short positions, or real-time trades.
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Frequently asked questions
Altarock Partners 13F Holdings
The Q1 2026 13F profile for Altarock Partners and Altarock Partners shows 8 reported positions, $4.1B in disclosed portfolio value, and top holdings including Amazon, TRANSDIGM GROUP, Microsoft, MOODYS, and MASTERCARD INC-CLASS A.
What is Altarock Partners buying? Latest 13F changes
The latest tracked change data for Altarock Partners highlights reported buys such as Amazon and MOODYS and reported sells or reductions such as TRANSDIGM GROUP, Microsoft, MASTERCARD INC-CLASS A, and VISA INC-CLASS A SHRS.
Altarock Partners top holdings
Altarock Partners top holdings are summarized from public disclosures with reported values, weights, portfolio concentration, top buys, top sells, and filing metadata where available.
Altarock Partners buys and sells
Use the top buys and top sells sections above to compare Altarock Partners's reported additions, reductions, exits, and latest portfolio activity against other tracked investors.
How delayed is Altarock Partners's 13F data?
SEC Form 13F requires institutional investment managers with $100M+ in US equities to disclose their holdings quarterly. Read our comprehensive 13F guide for timing, coverage, and limitations. Read the Whale Analyzer 13F guide.