CAT Rock Capital Management LP
GREENWICH, CT
$431m in 7 US stocks at the end of 30 June 2026. The top 10 are 100.0% of the money. It changed about 43.3% of the portfolio this quarter.
Value
$431m
Stocks
7
Top 10 share
100.0%
Turnover
43.3%
What changed this quarter
New
Bought for the first time this quarter.
None this quarter.
Added
Bought more of a stock they already held.
- TransDigm GroupTDG19.6% of the fund+37%
- Ares ManagementARES17.1% of the fund+13%
- TKO Group HoldingsTKO15.8% of the fund+11%
- MsciMSCI6.5% of the fund+19%
Cut
Sold some of their stake.
- MicrosoftMSFT17.4% of the fund-19%
- Taiwan Semiconductor ManufacturingTSM5.9% of the fund-15%
Sold out
Sold their entire stake.
- Meta PlatformsMETA-100%
- Joint Stock Co Kaspi.kzKSPI-100%
- PDD HoldingsPDD-100%
- StrideLRN-100%
- AlphabetGOOG-100%
- DoceboDCBO-100%
- DocusignDOCU-100%
Holdings
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| TransDigm GroupTDG | 19.6% | $84m | 63,339 | +37% |
| First AdvantageFA | 17.7% | $76m | 4,228,018 | Held |
| MicrosoftMSFT | 17.4% | $75m | 200,603 | -19% |
| Ares ManagementARES | 17.1% | $74m | 664,000 | +13% |
| TKO Group HoldingsTKO | 15.8% | $68m | 339,211 | +11% |
| MsciMSCI | 6.5% | $28m | 50,005 | +19% |
| Taiwan Semiconductor ManufacturingTSM | 5.9% | $25m | 52,976 | -15% |
Over time and by industry
Value over time
Jun '25
Dec '25
Jun '26
Value is down 45.7% since 30 June 2025.
Where the money is
Technology40.9%
Financial services23.6%
Industrials19.6%
Media & telecom15.8%
From the fund's 13F filings. They list US stocks and options only, 45 days after each quarter, and leave out cash, bonds, shorts and foreign shares.