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Institutional portfolios / 13F

ALTAROCK PARTNERS LP

A closer look at the portfolio, one quarter at a time.

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Portfolio snapshot

Q2 2026

Reported portfolio value
$4,239,761,490
As of June 30, 2026
Positions
8
Across disclosed securities
Top 5 weight
96.3%
Share of reported value

View SEC filing · Published 2026-08-17 11:00 UTC

Inside the portfolio

Reported holdings

By portfolio value ↓

Quarterly comparison unavailable: complete reports and corporate-action evidence are required. Reported holdings remain available below.

SecurityShares / principalReported valueWeightAdjusted quarterly change
AMAZON.COM INCCOMM · AMZN
Holding details

Reported CUSIP: 023135106

Issuer filings on SEC

Reported row 2 · 0001104659-26-097527

Quarterly change unavailable. Security identity or split coverage is incomplete.

 5,729,972 SH $1,365,681,526 32.21%32.21% —Comparison unavailable
TRANSDIGM GROUP INCCOMM · TDG
Holding details

Reported CUSIP: 893641100

Issuer filings on SEC

Reported row 7 · 0001104659-26-097527

Quarterly change unavailable. Security identity or split coverage is incomplete.

 875,755 SH $1,166,540,690 27.51%27.51% —Comparison unavailable
MICROSOFT CORPCOMM · MSFT
Holding details

Reported CUSIP: 594918104

Issuer filings on SEC

Reported row 5 · 0001104659-26-097527

Quarterly change unavailable. Security identity or split coverage is incomplete.

 2,334,482 SH $870,808,476 20.54%20.54% —Comparison unavailable
MASTERCARD INC-CLASS ACOMM · MA
Holding details

Reported CUSIP: 57636Q104

Issuer filings on SEC

Reported row 4 · 0001104659-26-097527

Quarterly change unavailable. Security identity or split coverage is incomplete.

 764,507 SH $392,650,795 9.26%9.26% —Comparison unavailable
VISA INC-CLASS A SHRSCOMM
Holding details

Reported CUSIP: 92826C839

Issuer filings on SEC

Reported row 8 · 0001104659-26-097527

Quarterly change unavailable. Security identity or split coverage is incomplete.

 836,470 SH $286,984,492 6.77%6.77% —Comparison unavailable
MOODYS CORPCOMM · MCO
Holding details

Reported CUSIP: 615369105

Issuer filings on SEC

Reported row 6 · 0001104659-26-097527

Quarterly change unavailable. Security identity or split coverage is incomplete.

 302,624 SH $137,064,462 3.23%3.23% —Comparison unavailable
ALPHABET INC-CL ACOMM · GOOGL
Holding details

Reported CUSIP: 02079K305

Issuer filings on SEC

Reported row 1 · 0001104659-26-097527

Quarterly change unavailable. Security identity or split coverage is incomplete.

 41,994 SH $15,007,396 0.35%0.35% —Comparison unavailable
HILTON WORLDWIDECOMM · HLT
Holding details

Reported CUSIP: 43300A203

Issuer filings on SEC

Reported row 3 · 0001104659-26-097527

Quarterly change unavailable. Security identity or split coverage is incomplete.

 15,202 SH $5,023,653 0.12%0.12% —Comparison unavailable