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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 · 2024Q3
9 positions
1
T
TDGTRANSDIGM GROUP INC
Industrials·Aerospace & Defense
29.46%
of portfolio
Number of shares
1,048,264 sh
Holdings current value
$1.50B
Avg closing price
$1232
-5.3%
Last action
Trimmed 0.7%
2025Q4
Current $1166
2
A
AMZNAMAZON COM INC
Consumer Cyclical·Internet Retail
19.83%
of portfolio
Number of shares
5,402,320 sh
Holdings current value
$1.01B
Avg closing price
$193.53
+31.8%
Last action
Trimmed 4.3%
2025Q4
Current $255.08
3
M
MSFTMICROSOFT CORP
Technology·Software - Infrastructure
16.40%
of portfolio
Number of shares
1,934,816 sh
Holdings current value
$832.55M
Avg closing price
$410.44
+1.3%
Last action
Trimmed 20.1%
2025Q4
Current $415.75
4
G
GOOGLALPHABET INC
Communication Services·Internet Content & Information
10.89%
of portfolio
Number of shares
3,333,905 sh
Holdings current value
$552.93M
Avg closing price
$152.55
+122.2%
Last action
Trimmed 5.0%
2025Q4
Current $338.89
5
M
MCOMOODYS CORP
Financial Services·Financial Data & Stock Exchanges
9.97%
of portfolio
Number of shares
1,066,619 sh
Holdings current value
$506.21M
Avg closing price
$400.54
+12.9%
Last action
Trimmed 11.2%
2025Q4
Current $452.35
6
V
VVISA INC
Financial Services·Credit Services
6.06%
of portfolio
Number of shares
1,118,383 sh
Holdings current value
$307.50M
Avg closing price
$279.08
+10.7%
Last action
Trimmed 1.5%
2025Q4
Current $308.88
7
M
MAMASTERCARD INCORPORATED
Financial Services·Credit Services
6.03%
of portfolio
Number of shares
620,033 sh
Holdings current value
$306.17M
Avg closing price
$488.53
+2.8%
Last action
Trimmed 6.4%
2025Q4
Current $502.38
8
F
FICOFAIR ISAAC CORP
Technology·Software - Application
1.33%
of portfolio
Number of shares
34,652 sh
Holdings current value
$67.35M
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
$1.95M
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
29.46% · -18.3%
AMZN
19.83% · +36.9%
MSFT
16.40% · -3.4%
GOOGL
10.89% · +104.3%
MCO
9.97% · -4.7%
V
6.06% · +12.3%
MA
6.03% · +1.7%
FICO
1.33% · -49.6%
CHTR
0.04% · -25.4%

Sector exposure

Share of dollar value across the latest reported portfolio. Unclassified positions excluded.
  • Industrials1 pos$1.50B29.5%
  • Financial Services3 pos$1.12B22.1%
  • Consumer Cyclical1 pos$1.01B19.8%
  • Technology2 pos$899.9M17.7%
  • Communication Services2 pos$554.9M10.9%