WhaleCreep

Altarock Partners LP 13F holdings, Q1 2026

Hedge fundSEC filingsCompare with another fundHoldings as of 2026-03-31, filed 2026-05-15

Altarock Partners LP disclosed 8 US equity positions worth $4.1bn in its Q1 2026 13F filing. Its largest position is AMZN at 38.2% of the reported book, followed by TDG and MSFT. Versus Q4 2025 it opened 0 new positions, added to 2, reduced 6 and exited 0.

$4.1bn
Reported equity book
Sum of the long US equity positions in the filing, at the values filed. Options are excluded.
8
Positions
Distinct securities in the equity book with a reported value above zero. Options are excluded.
38.2%
Largest position
The largest single position as a share of the reported equity book.
100%
Top 10 weight
The ten largest positions together, as a share of the reported equity book.
4
Effective positions
1 / HHI of portfolio weights: the number of equal-weight positions the book behaves like.
47
Quarters on file since Q4 2014
Quarters for which this manager's 13F holdings are on record.

Holdings

Against Q4 2025: 0 new, 2 added, 6 reduced, 0 exited

8 rows
AMZN AMAZON COM INCConsumer Cyclical38.2%$1.6bn7.57m+3.5%added
TDG TRANSDIGM GROUP INCIndustrials25.5%$1.1bn909,168−6.2%reduced
MSFT MICROSOFT CORPTechnology16.8%$691m1.87m−10%reduced
MCO MOODYS CORPFinancial Services9.1%$376m862,036+5.8%added
MA MASTERCARD INCFinancial Services6.3%$261m522,836−3.5%reduced
V VISA INCFinancial Services3.7%$151m498,677−3.5%reduced
GOOGL ALPHABET INCCommunication Services0.3%$12.5m43,391−74%reduced
HLT HILTON WORLDWIDE HLDGS INCConsumer Cyclical0.1%$4.7m15,341−97%reduced

Sector mix

  • Consumer Cyclical38.3%
  • Industrials25.5%
  • Financial Services19.1%
  • Technology16.8%
  • Communication Services0.3%

Book over time

Every quarter on file (47)
QuarterPositionsEquity book
Q2 20268$4.2bn
Q1 20268$4.1bn
Q4 20258$5.1bn
Q3 20259$5.5bn
Q2 20259$5.5bn
Q1 20259$5.0bn
Q4 202410$4.9bn
Q3 20249$5.1bn
Q2 20249$4.9bn
Q1 20248$4.7bn
Q4 20238$4.5bn
Q3 20238$4.0bn
Q2 20238$4.2bn
Q1 20238$3.7bn
Q4 20228$3.2bn
Q3 20228$3.1bn
Q2 20228$3.2bn
Q1 20229$3.9bn
Q4 20218$3.8bn
Q3 20218$3.7bn
Q2 20218$3.6bn
Q1 20217$2.6bn
Q4 20207$2.4bn
Q3 20206$2.1bn
Q2 20206$2.0bn
Q1 20206$1.6bn
Q4 20197$1.6bn
Q3 20196$1.2bn
Q2 20196$1.2bn
Q1 20196$1.1bn
Q4 20186$840m
Q3 20187$1.1bn
Q2 20187$967m
Q1 20187$874m
Q4 20177$761m
Q3 20177$684m
Q2 20177$710m
Q1 20178$674m
Q4 20168$682m
Q3 20168$628m
Q2 20169$550m
Q1 20168$543m
Q4 20158$492m
Q3 20158$420m
Q2 20157$314m
Q1 20156$200m
Q4 20146$121m

Where Altarock Partners LP was early

3 rows
CHTR CHARTER COMMUNICATIONS INC-AQ2 20163 of 26922.8%38.6%35Exited by Q1 2025+50%
WAB WABTECQ3 20167 of 14510.9%10.9%7Exited by Q2 2018−0.3%
BKNG BOOKING HOLDINGS INCQ1 20181 of 31324.3%24.3%3Exited by Q4 2018−4.6%

Concentration and tenure

27.7%
Median largest position, all quarters
The largest single position as a share of the reported equity book.
100%
Median top 10 weight, all quarters
The ten largest positions together, as a share of the reported equity book.
Concentrated
Style, by median largest position
5
Median completed holding, quarters