CAT ROCK CAPITAL MANAGEMENT LP 13F: Quarter-over-Quarter Portfolio Changes
CAT ROCK CAPITAL MANAGEMENT LP reported a disclosed portfolio value of approximately $643.6 million in its latest SEC Form 13F-HR filing for Q1 2026, down 7.7% quarter on quarter. Over the quarter, the fund bought more shares in 7 holdings, trimmed 6 holdings, and exited 2 positions.
CAT ROCK CAPITAL MANAGEMENT LP's top buy was Ares Management Corporation (ARES) . The fund bought 377.7% more shares, lifting the position's portfolio weight by 7.1 percentage points. Its top sell was Intuit (INTU) . The fund exited the position completely after it had accounted for 3.9% of the previous portfolio.
Top BuysQ1 2026
The fund's top buys among existing positions in Q1 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
| Company | Ticker | Portfolio Weight Change | More Shares | History |
|---|---|---|---|---|
| ARES MANAGEMENT CORPORATION | ARES | +7.1% | +377.7% | History → |
| TRANSDIGM GROUP INC | TDG | +2.7% | +57.4% | History → |
| STRIDE INC | LRN | +1.8% | +33.7% | History → |
| FIRST ADVANTAGE CORP NEW | FA | +0.8% | +26.5% | History → |
| MICROSOFT | MSFT | +-0.1% | +19.7% | History → |
| TKO GROUP HOLDINGS INC | TKO | +0.7% | +2.9% | History → |
| MSCI INC | MSCI | +0.1% | +2.6% | History → |
Top SellsQ1 2026
The fund's top sells among positions it retained in Q1 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
| Company | Ticker | Portfolio Weight Change | Shares Sold | History |
|---|---|---|---|---|
| TAIWAN SEMIC-ADR | TSM | -2.3% | 51.1% | Holders → |
| META PLATFORMS INC | META | -2.8% | 7.9% | History → |
| ALPHABET CL C | GOOG | -0.2% | 4.9% | Holders → |
| DOCUSIGN INC | DOCU | -0.6% | 2.8% | Holders → |
| JSC KASPI.KZ | KSPI | 0.0% | 2.2% | History → |
| PDD HOLDINGS INC | PDD | -0.2% | 1.1% | History → |
Full ExitsQ1 2026
Positions present in the prior 13F-HR filing that no longer appear in Q1 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| INTUIT | INTU | 3.9% |
| BLUE OWL CAPITAL INC | OWL | 2.6% |
Net Portfolio Value ChangeQ1 2026
- $0.7BPrior quarter
- $0.6BCurrent quarter
- $-0.1BNet delta
- -7.7%% change
Methodology & FAQ
How CAT ROCK CAPITAL MANAGEMENT LP Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for CAT ROCK CAPITAL MANAGEMENT LP: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description — including how confidential treatment filings are handled — is documented in the Methodology.
What stocks did CAT ROCK CAPITAL MANAGEMENT LP buy in Q1 2026?
In Q1 2026, CAT ROCK CAPITAL MANAGEMENT LP bought more shares of ARES MANAGEMENT CORPORATION (ARES), TRANSDIGM GROUP INC (TDG), STRIDE INC (LRN), FIRST ADVANTAGE CORP NEW (FA), MICROSOFT (MSFT) — the largest 5 of 7 adds.
What stocks did CAT ROCK CAPITAL MANAGEMENT LP sell in Q1 2026?
In Q1 2026, CAT ROCK CAPITAL MANAGEMENT LP fully sold 2 positions (INTUIT (INTU), BLUE OWL CAPITAL INC (OWL)); reduced holdings in TAIWAN SEMIC-ADR (TSM), META PLATFORMS INC (META), ALPHABET CL C (GOOG), DOCUSIGN INC (DOCU), JSC KASPI.KZ (KSPI) — the largest 5 of 6 reductions.
Which positions did CAT ROCK CAPITAL MANAGEMENT LP initiate in Q1 2026?
CAT ROCK CAPITAL MANAGEMENT LP established no new positions in Q1 2026.
Which existing positions saw the largest allocation increases for CAT ROCK CAPITAL MANAGEMENT LP in Q1 2026?
Of 7 existing positions with share-count increases in Q1 2026, the largest were: ARES MANAGEMENT CORPORATION (ARES, +7.1% weight, +377.7% shares), TRANSDIGM GROUP INC (TDG, +2.7% weight, +57.4% shares), STRIDE INC (LRN, +1.8% weight, +33.7% shares), FIRST ADVANTAGE CORP NEW (FA, +0.8% weight, +26.5% shares), MICROSOFT (MSFT, +-0.1% weight, +19.7% shares), TKO GROUP HOLDINGS INC (TKO, +0.7% weight, +2.9% shares), MSCI INC (MSCI, +0.1% weight, +2.6% shares).
Which positions did CAT ROCK CAPITAL MANAGEMENT LP fully exit in Q1 2026?
CAT ROCK CAPITAL MANAGEMENT LP fully exited 2 positions in Q1 2026: INTUIT (INTU, last-reported weight 3.9%), BLUE OWL CAPITAL INC (OWL, last-reported weight 2.6%).
Which existing positions saw the largest allocation reductions for CAT ROCK CAPITAL MANAGEMENT LP in Q1 2026?
Of 6 existing positions with share-count reductions in Q1 2026, the largest were: TAIWAN SEMIC-ADR (TSM, -2.3% weight, -51.1% shares), META PLATFORMS INC (META, -2.8% weight, -7.9% shares), ALPHABET CL C (GOOG, -0.2% weight, -4.9% shares), DOCUSIGN INC (DOCU, -0.6% weight, -2.8% shares), JSC KASPI.KZ (KSPI, 0.0% weight, -2.2% shares), PDD HOLDINGS INC (PDD, -0.2% weight, -1.1% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.