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Built from publicly disclosed institutional and insider activity. Informational purposes only - not investment advice.OpenStocks · v0.1
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  1. Home/
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  3. Altarock Partners
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Altarock Partners

Share
  • Hedge Fund · CIK 0001631014
  • Consumer-Focused
  • Highly Concentrated
  • Mid-Size Fund

Altarock Partners, a hedge fund overseeing $5.10B in disclosed equity holdings (SEC CIK 0001631014). The latest portfolio (2025Q4) discloses 8 positions across 5 sectors, with the largest positions in AMZN, TDG and MSFT. On a mark-to-market basis the tracked portfolio has returned 24.0% since 2024Q1. OpenStocks tracks 8 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.

Track Altarock's filingsView holdings↓
Portfolio
$5.10B
Positions
8
Quarter
2025Q4
Filings tracked
8
Since filing+24.0%Full performance →
Quarter
2025Q42025Q32025Q22025Q12024Q42024Q32024Q22024Q1

Holdings

Sorted by value · 2025Q2
9 positions
1
T
TDGTRANSDIGM GROUP INC
Industrials·Aerospace & Defense
27.21%
of portfolio
Number of shares
979,950 sh
Holdings current value
$1.49B
Avg closing price
$1232
-5.3%
Last action
Trimmed 0.7%
2025Q4
Current $1166
2
A
AMZNAMAZON COM INC
Consumer Cyclical·Internet Retail
25.14%
of portfolio
Number of shares
6,275,906 sh
Holdings current value
$1.38B
Avg closing price
$193.53
+31.8%
Last action
Trimmed 3.7%
2025Q4
Current $255.08
3
M
MSFTMICROSOFT CORP
Technology·Software - Infrastructure
23.42%
of portfolio
Number of shares
2,578,649 sh
Holdings current value
$1.28B
Avg closing price
$410.44
+1.3%
Last action
Trimmed 15.9%
2025Q4
Current $415.75
4
M
MCOMOODYS CORP
Financial Services·Financial Data & Stock Exchanges
8.72%
of portfolio
Number of shares
952,254 sh
Holdings current value
$477.64M
Avg closing price
$400.54
+12.9%
Last action
Trimmed 12.4%
2025Q4
Current $452.35
5
M
MAMASTERCARD INCORPORATED
Financial Services·Credit Services
6.01%
of portfolio
Number of shares
586,254 sh
Holdings current value
$329.44M
Avg closing price
$488.53
+2.8%
Last action
Trimmed 6.7%
2025Q4
Current $502.38
6
V
VVISA INC
Financial Services·Credit Services
3.47%
of portfolio
Number of shares
535,412 sh
Holdings current value
$190.10M
Avg closing price
$279.08
+10.7%
Last action
Trimmed 3.1%
2025Q4
Current $308.88
7
G
GOOGLALPHABET INC
Communication Services·Internet Content & Information
3.36%
of portfolio
Number of shares
1,045,429 sh
Holdings current value
$184.24M
Avg closing price
$152.55
+122.2%
Last action
Trimmed 14.3%
2025Q4
Current $338.89
8
H
HLTHILTON WORLDWIDE HLDGS INC
Consumer Cyclical·Lodging
2.65%
of portfolio
Number of shares
544,596 sh
Holdings current value
$145.05M
Avg closing price
$250.12
+33.7%
Last action
Trimmed 0.4%
2025Q3
Current $334.28
9
F
FICOFAIR ISAAC CORP
Technology·Software - Application
0.02%
of portfolio
Number of shares
670 sh
Holdings current value
$1.22M
Avg closing price
$1489
-34.2%
Last action
Exited
2025Q4
Current $979.76

Portfolio heatmap

Box size = % of portfolio · color = return since filing
TDG
27.21% · -23.3%
AMZN
25.14% · +16.3%
MSFT
23.42% · -16.4%
MCO
8.72% · -9.8%
MA
6.01% · -10.6%
V
3.47% · -13.0%
GOOGL
3.36% · +92.3%
HLT
2.65% · +25.5%
FICO
0.02% · -46.4%

Sector exposure

Share of dollar value across the latest reported portfolio. Unclassified positions excluded.
  • Consumer Cyclical2 pos$1.52B27.8%
  • Industrials1 pos$1.49B27.2%
  • Technology2 pos$1.28B23.4%
  • Financial Services3 pos$997.2M18.2%
  • Communication Services1 pos$184.2M3.4%