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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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  • Performance8Q
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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 · 2024Q2
9 positions
1
T
TDGTRANSDIGM GROUP INC
Industrials·Aerospace & Defense
28.22%
of portfolio
Number of shares
1,073,264 sh
Holdings current value
$1.37B
Avg closing price
$1232
-5.3%
Last action
Trimmed 0.6%
2025Q4
Current $1166
2
M
MSFTMICROSOFT CORP
Technology·Software - Infrastructure
17.80%
of portfolio
Number of shares
1,934,816 sh
Holdings current value
$864.77M
Avg closing price
$410.44
+1.3%
Last action
Trimmed 20.1%
2025Q4
Current $415.75
3
A
AMZNAMAZON COM INC
Consumer Cyclical·Internet Retail
16.43%
of portfolio
Number of shares
4,129,460 sh
Holdings current value
$798.02M
Avg closing price
$193.53
+31.8%
Last action
Trimmed 5.6%
2025Q4
Current $255.08
4
G
GOOGLALPHABET INC
Communication Services·Internet Content & Information
15.00%
of portfolio
Number of shares
4,002,110 sh
Holdings current value
$728.98M
Avg closing price
$152.55
+122.2%
Last action
Trimmed 4.2%
2025Q4
Current $338.89
5
V
VVISA INC
Financial Services·Credit Services
9.61%
of portfolio
Number of shares
1,778,383 sh
Holdings current value
$466.77M
Avg closing price
$279.08
+10.7%
Last action
Trimmed 0.9%
2025Q4
Current $308.88
6
M
MCOMOODYS CORP
Financial Services·Financial Data & Stock Exchanges
9.42%
of portfolio
Number of shares
1,087,080 sh
Holdings current value
$457.58M
Avg closing price
$400.54
+12.9%
Last action
Trimmed 11.0%
2025Q4
Current $452.35
7
M
MAMASTERCARD INCORPORATED
Financial Services·Credit Services
2.42%
of portfolio
Number of shares
267,033 sh
Holdings current value
$117.80M
Avg closing price
$488.53
+2.8%
Last action
Trimmed 13.7%
2025Q4
Current $502.38
8
F
FICOFAIR ISAAC CORP
Technology·Software - Application
1.06%
of portfolio
Number of shares
34,652 sh
Holdings current value
$51.59M
Avg closing price
$1489
-34.2%
Last action
Exited
2025Q4
Current $979.76
9
C
CHTRCHARTER COMMUNICATIONS INC N
Communication Services·Telecom Services
0.04%
of portfolio
Number of shares
6,025 sh
Holdings current value
$1.80M
Avg closing price
$290.63
-16.8%
Last action
Exited
2025Q1
Current $241.78

Portfolio heatmap

Box size = % of portfolio · color = return since filing
TDG
28.22% · -8.8%
MSFT
17.80% · -7.0%
AMZN
16.43% · +32.0%
GOOGL
15.00% · +86.0%
V
9.61% · +17.7%
MCO
9.42% · +7.5%
MA
2.42% · +13.9%
FICO
1.06% · -34.2%
CHTR
0.04% · -19.1%

Sector exposure

Share of dollar value across the latest reported portfolio. Unclassified positions excluded.
  • Industrials1 pos$1.37B28.2%
  • Financial Services3 pos$1.04B21.5%
  • Technology2 pos$916.4M18.9%
  • Consumer Cyclical1 pos$798.0M16.4%
  • Communication Services2 pos$730.8M15.0%