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ALTAROCK PARTNERS LP

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13F filer, CIK 1631014, WEST PALM BEACH, FL

ALTAROCK PARTNERS LP reported $4,239,761,490 across 8 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-08-17.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001104659-26-097527

Period
2026-06-30
Reported value
$4.24B
Holdings
8
Top 10 weight
100%
New
0
Sold out
0

Largest buys vs the previous quarter

SecurityShares changeApprox. value
MSFTadded+466,945$174M
MAadded+241,671$124M
Vadded+337,793$116M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
AMZNreduced-1,837,974-$438M
MCOreduced-559,412-$253M
TDGreduced-33,413-$44.5M
GOOGLreduced-1,397-$499K
HLTreduced-139-$45.9K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0001104659-26-097527, largest first. % of portfolio is the value over $4,239,761,490, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
AMZNAMAZON COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 5,402,320 shares; 2024Q4: 5,278,320 shares; 2025Q1: 5,202,415 shares; 2025Q2: 6,275,906 shares; 2025Q3: 7,558,253 shares; 2025Q4: 7,314,534 shares; 2026Q1: 7,567,946 shares; 2026Q2: 5,729,972 shares 5,729,972$1.37B32.21%-1,837,974Timeline
TDGTRANSDIGM GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,048,264 shares; 2024Q4: 1,000,604 shares; 2025Q1: 979,950 shares; 2025Q2: 979,950 shares; 2025Q3: 976,392 shares; 2025Q4: 969,400 shares; 2026Q1: 909,168 shares; 2026Q2: 875,755 shares 875,755$1.17B27.51%-33,413Timeline
MSFTMICROSOFT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,934,816 shares; 2024Q4: 1,891,641 shares; 2025Q1: 2,578,649 shares; 2025Q2: 2,578,649 shares; 2025Q3: 2,569,267 shares; 2025Q4: 2,082,357 shares; 2026Q1: 1,867,537 shares; 2026Q2: 2,334,482 shares 2,334,482$871M20.54%+466,945Timeline
MAMASTERCARD INCORPORATEDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 620,033 shares; 2024Q4: 586,254 shares; 2025Q1: 586,254 shares; 2025Q2: 586,254 shares; 2025Q3: 584,086 shares; 2025Q4: 541,836 shares; 2026Q1: 522,836 shares; 2026Q2: 764,507 shares 764,507$393M9.26%+241,671Timeline
VVISA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,118,383 shares; 2024Q4: 874,912 shares; 2025Q1: 850,412 shares; 2025Q2: 535,412 shares; 2025Q3: 533,522 shares; 2025Q4: 516,677 shares; 2026Q1: 498,677 shares; 2026Q2: 836,470 shares 836,470$287M6.77%+337,793Timeline
MCOMOODYS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,066,619 shares; 2024Q4: 950,905 shares; 2025Q1: 950,905 shares; 2025Q2: 952,254 shares; 2025Q3: 948,735 shares; 2025Q4: 814,503 shares; 2026Q1: 862,036 shares; 2026Q2: 302,624 shares 302,624$137M3.23%-559,412Timeline
GOOGLALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 3,333,905 shares; 2024Q4: 3,480,801 shares; 2025Q1: 3,454,367 shares; 2025Q2: 1,045,429 shares; 2025Q3: 344,391 shares; 2025Q4: 169,391 shares; 2026Q1: 43,391 shares; 2026Q2: 41,994 shares 41,994$15M0.35%-1,397Timeline
HLTHILTON WORLDWIDE HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 91,328 shares; 2025Q1: 273,957 shares; 2025Q2: 544,596 shares; 2025Q3: 542,613 shares; 2025Q4: 542,613 shares; 2026Q1: 15,341 shares; 2026Q2: 15,202 shares 15,202$5.02M0.12%-139Timeline

How Q2 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001104659-26-097527 base2026-08-17acceptance time not in the bulk data set

Filings

Every filing of this filer: 13F reports and notices, the 13D and 13G it filed or is a reporting person of, and Forms 3, 4 and 5 it reported as an owner.

FilingSubjectFiledAcceptedIngested
13F-HR 0001104659-26-097527 Quarter ended 2026-06-302026-08-17acceptance time not in the bulk data set
13F-HR 0001104659-26-062170 Quarter ended 2026-03-312026-05-15acceptance time not in the bulk data set
13F-HR 0001104659-26-015359 Quarter ended 2025-12-312026-02-13acceptance time not in the bulk data set
13F-HR 0001104659-25-112002 Quarter ended 2025-09-302025-11-14acceptance time not in the bulk data set
13F-HR 0001104659-25-078208 Quarter ended 2025-06-302025-08-14acceptance time not in the bulk data set
13F-HR 0001104659-25-048610 Quarter ended 2025-03-312025-05-14acceptance time not in the bulk data set
13F-HR 0001104659-25-014306 Quarter ended 2024-12-312025-02-14acceptance time not in the bulk data set
13F-HR 0001104659-24-117526 Quarter ended 2024-09-302024-11-13acceptance time not in the bulk data set
13F-HR 0001104659-24-089560 Quarter ended 2024-06-302024-08-14acceptance time not in the bulk data set
13F-HR/A 0001104659-24-063732 Quarter ended 2024-03-312024-05-21acceptance time not in the bulk data set
13F-HR 0001104659-24-061859 Quarter ended 2024-03-312024-05-15acceptance time not in the bulk data set
13F-HR 0001104659-24-024107 Quarter ended 2023-12-312024-02-15acceptance time not in the bulk data set
13F-HR 0001104659-23-117428 Quarter ended 2023-09-302023-11-14acceptance time not in the bulk data set
13F-HR 0001104659-23-091497 Quarter ended 2023-06-302023-08-14acceptance time not in the bulk data set
13F-HR 0001104659-23-061059 Quarter ended 2023-03-312023-05-16acceptance time not in the bulk data set
13F-HR 0001104659-23-019687 Quarter ended 2022-12-312023-02-13acceptance time not in the bulk data set
13F-HR 0001104659-22-118063 Quarter ended 2022-09-302022-11-14acceptance time not in the bulk data set
13F-HR 0001104659-22-090086 Quarter ended 2022-06-302022-08-12acceptance time not in the bulk data set
13F-HR 0001104659-22-060139 Quarter ended 2022-03-312022-05-13acceptance time not in the bulk data set
13F-HR 0001104659-22-022401 Quarter ended 2021-12-312022-02-14acceptance time not in the bulk data set
13F-HR 0001104659-21-138975 Quarter ended 2021-09-302021-11-15acceptance time not in the bulk data set
13F-HR 0001104659-21-104970 Quarter ended 2021-06-302021-08-13acceptance time not in the bulk data set
13F-HR 0001104659-21-066668 Quarter ended 2021-03-312021-05-14acceptance time not in the bulk data set
13F-HR 0001104659-21-022740 Quarter ended 2020-12-312021-02-16acceptance time not in the bulk data set
13F-HR 0001104659-20-125016 Quarter ended 2020-09-302020-11-13acceptance time not in the bulk data set
13F-HR 0001104659-20-094776 Quarter ended 2020-06-302020-08-13acceptance time not in the bulk data set
13F-HR 0001104659-20-060577 Quarter ended 2020-03-312020-05-13acceptance time not in the bulk data set
13F-HR 0001104659-20-020035 Quarter ended 2019-12-312020-02-13acceptance time not in the bulk data set
13F-HR 0001104659-19-064570 Quarter ended 2019-09-302019-11-15acceptance time not in the bulk data set
13F-HR 0001144204-19-039893 Quarter ended 2019-06-302019-08-14acceptance time not in the bulk data set
13F-HR 0001144204-19-026028 Quarter ended 2019-03-312019-05-14acceptance time not in the bulk data set
13F-HR 0001144204-19-007801 Quarter ended 2018-12-312019-02-14acceptance time not in the bulk data set
13F-HR 0001144204-18-059158 Quarter ended 2018-09-302018-11-13acceptance time not in the bulk data set
13F-HR 0001144204-18-043728 Quarter ended 2018-06-302018-08-13acceptance time not in the bulk data set
13F-HR 0001144204-18-028197 Quarter ended 2018-03-312018-05-14acceptance time not in the bulk data set
13F-HR 0001144204-18-007671 Quarter ended 2017-12-312018-02-13acceptance time not in the bulk data set
13F-HR 0001144204-17-058656 Quarter ended 2017-09-302017-11-14acceptance time not in the bulk data set
13F-HR 0001144204-17-042512 Quarter ended 2017-06-302017-08-11acceptance time not in the bulk data set
13F-HR 0001144204-17-027136 Quarter ended 2017-03-312017-05-15acceptance time not in the bulk data set
13F-HR 0001144204-17-008608 Quarter ended 2016-12-312017-02-14acceptance time not in the bulk data set
13F-HR 0001144204-16-134252 Quarter ended 2016-09-302016-11-14acceptance time not in the bulk data set
13F-HR 0001144204-16-119573 Quarter ended 2016-06-302016-08-15acceptance time not in the bulk data set
13F-HR 0001144204-16-101496 Quarter ended 2016-03-312016-05-13acceptance time not in the bulk data set
13F-HR 0001144204-16-079521 Quarter ended 2015-12-312016-02-08acceptance time not in the bulk data set
13F-HR 0001144204-15-064631 Quarter ended 2015-09-302015-11-12acceptance time not in the bulk data set
13F-HR 0001144204-15-049439 Quarter ended 2015-06-302015-08-14acceptance time not in the bulk data set
13F-HR 0001144204-15-030640 Quarter ended 2015-03-312015-05-14acceptance time not in the bulk data set
13F-HR 0001144204-15-009538 Quarter ended 2014-12-312015-02-17acceptance time not in the bulk data set