ALTAROCK PARTNERS LP
CIK 1631014 · View on SEC EDGAR ↗
- Portfolio value
- $4.2B
- Positions
- 8
- As of
- June 30, 2026
Portfolio value QoQ: +2.7% 13F does not disclose cash
- Top 10 holdings weight
- 100.00%
- Top 25 holdings weight
- 100.00%
- Positions above 1%
- 6
- Effective number of positions
- 4.2
Based on 13F long-equity holdings only (cash, bonds, shorts not disclosed)
Turnover Q2 2026: 9.9% Est. buys $414,195,450 · sells $736,484,238
Median holding: 7.0 quarters Tracked Q4 2024–Q2 2026 · 80.0% still held
- New positions
- 0
- Increased
- 3
- Decreased
- 5
- Closed
- 1
On this page
- Performance vs S&P How this manager's 13F portfolio performed against the S&P 500.
- Sector breakdown How the portfolio splits across market sectors.
- Portfolio Every stock this institution reports holding, from its latest 13F.
- Top moves The biggest position increases and decreases this quarter.
- Exited positions Positions the manager fully sold out of last quarter.
Performance vs S&P 500
Annualized: +4.6% · S&P 500: +18.0%
Approximates a buy-and-hold portfolio built from quarterly SEC 13F snapshots. Excludes cash, short positions, options/derivatives, and non-13(f) securities — reflects the disclosed long-equity book only, not total fund AUM. SEC filing lag is up to 45 days; this is not a real-time-copyable timing.
Priceable coverage: 100.0% · Options excluded: 0.0%
Sector breakdown
Full portfolio 8 positions
| Type | Streak | 8Q trend | |||||
|---|---|---|---|---|---|---|---|
| AMZN Amazon.com, Inc. - Common Stock | $1,365,681,526 | 32.21% | 5,729,972 | $-210,494,587 | Down ×1 | ||
| TDG Transdigm Group Incorporated Common Stock | $1,166,540,690 | 27.51% | 875,755 | $112,851,345 | Down ×4 | ||
| MSFT Microsoft Corporation - Common Stock | $870,808,476 | 20.54% | 2,334,482 | $179,502,305 | Up ×1 | ||
| MA Mastercard Incorporated Common Stock | $392,650,795 | 9.26% | 764,507 | $131,410,559 | Up ×1 | ||
| V Visa Inc. | $286,984,492 | 6.77% | 836,470 | $136,264,355 | Up ×1 | ||
| MCO Moody's Corporation Common Stock | $137,064,462 | 3.23% | 302,624 | $-238,998,743 | Down ×1 | ||
| GOOGL Alphabet Inc. - Class A Common Stock | $15,007,396 | 0.35% | 41,994 | $2,529,880 | Down ×6 | ||
| HLT Hilton Worldwide Holdings Inc. Common Stock | $5,023,653 | 0.12% | 15,202 | $358,762 | Down ×2 | ||
| No matches | |||||||
Top movers (QoQ)
Exited positions
Includes corporate events (mergers, delistings) — not all exits are sells
Closed positions reflect 13F reporting changes; for index managers these are often mechanical (delisting, M&A, index rebalancing), not active decisions.