CIK: 0001654648
Total reported value
$643.6M
Reporting period: 2026-03-31 · Number of holdings: 14
CAT ROCK CAPITAL MANAGEMENT LP disclosed 14 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $643.6M and a quarterly turnover rate of 29.0%.
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Cat Rock Capital Management LP's disclosed holdings carry a Herfindahl concentration index of 0.100 — mathematically equivalent to about 10 equally-sized positions, close to its 14 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.65), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 6.3 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Add ARES
+377.7% $44.3M
Trim META
-7.9% -$28.7M
Add TDG
+57.4% $14.5M
Trim TSM
-51.1% -$17.7M
Add LRN
+33.7% $10.4M
Add FA
+26.5% $1.2M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | META | Meta Platforms Inc-class A | Stock-Comm Services | 17.65% | -2.75% | -7.89% | |
| 2 | MSFT | Microsoft CORP | Stock-Tech | 14.32% | -0.11% | +19.66% | |
| 3 | ARES | Ares Management CORP - A | Stock-Financials | 9.97% | +7.12% | +377.74% | |
| 4 | TKO | Tko Group Holdings INC | Stock-Comm Services | 9.60% | +0.67% | +2.85% | |
| 5 | TDG | Transdigm Group INC | Stock-Industrials | 8.30% | +2.72% | +57.40% | |
| 6 | FA | First Advantage CORP | Stock-Other | 7.73% | +0.77% | +26.48% | |
| 7 | KSPI | Jsc Kaspi.kz Adr | Stock-Other | 7.26% | +0.03% | -2.17% | |
| 8 | PDD | Pdd Holdings INC | Stock-Consumer Disc | 6.99% | -0.25% | -1.12% | |
| 9 | LRN | Stride INC | Stock-Consumer Staples | 3.58% | +1.76% | +33.71% | |
| 10 | MSCI | Msci INC | Stock-Financials | 3.52% | +0.15% | +2.57% | |
| 11 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 3.26% | -2.29% | -51.15% | |
| 12 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 3.20% | -0.19% | -4.91% | |
| 13 | DCBO | Docebo INC | Stock-Other | 2.98% | -0.51% | — | |
| 14 | DOCU | Docusign INC | Stock-Tech | 1.65% | -0.62% | -2.77% |
Performance for Q3 2026
+0.5%
Performance Last 4 Quarters
-13.7%
Based on 75% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 14 | $643.6M | 29 | |
| 2025-12-31 | 16 | $697.4M | 29 | |
| 2025-09-30 | 16 | $810.4M | 39 | |
| 2025-06-30 | 15 | $793.8M | 0 | |
| 2025-03-31 | 15 | $753.5M | 100 | |
| 2024-12-31 | 14 | $765.0M | 0 | |
| 2024-09-30 | 12 | $882.6M | 0 | |
| 2024-06-30 | 11 | $892.6M | 0 | |
| 2024-03-31 | 12 | $873.2M | 0 | |
| 2023-12-31 | 10 | $659.7M | 0 | |
| 2023-09-30 | 12 | $671.2M | 0 | |
| 2023-06-30 | 13 | $725.3M | 0 | |
| 2023-03-31 | 11 | $710.2M | 0 | |
| 2022-12-31 | 12 | $543.9M | 0 | |
| 2022-09-30 | 11 | $448.5M | 0 | |
| 2022-06-30 | 9 | $469.9M | 0 | |
| 2022-03-31 | 11 | $961.8M | 0 | |
| 2021-12-31 | 10 | $1.0B | 0 | |
| 2021-09-30 | 8 | $1.1B | 0 | |
| 2021-06-30 | 9 | $1.2B | 34 | |
| 2021-03-31 | 8 | $1.1B | 14 | |
| 2020-12-31 | 9 | $1.0B | 35 | |
| 2020-09-30 | 10 | $963.3M | 36 | |
| 2020-06-30 | 12 | $947.2M | 38 | |
| 2020-03-31 | 11 | $832.8M | 94 | |
| 2019-12-31 | 9 | $709.6M | 32 | |
| 2019-09-30 | 13 | $635.2M | 49 | |
| 2019-06-30 | 11 | $562.6M | 43 | |
| 2019-03-31 | 6 | $368.9M | 40 | |
| 2018-12-31 | 7 | $423.4M | 33 | |
| 2018-09-30 | 9 | $418.4M | 69 | |
| 2018-06-30 | 6 | $294.5M | 54 | |
| 2018-03-31 | 6 | $268.5M | 76 | |
| 2017-12-31 | 7 | $206.7M | 64 | |
| 2017-09-30 | 5 | $195.5M | 27 | |
| 2017-06-30 | 7 | $232.6M | 67 | |
| 2017-03-31 | 7 | $247.8M | 38 | |
| 2016-12-31 | 6 | $177.5M | 76 | |
| 2016-09-30 | 7 | $182.3M | 43 | |
| 2016-06-30 | 10 | $197.0M | 46 | |
| 2016-03-31 | 10 | $244.1M | 51 | |
| 2015-12-31 | 10 | $257.0M | 0 |
Cat Rock Capital Management LP's most significant position changes for 2026-03-31: Sold out: Intuit INC (INTU); Sold out: Blue Owl Capital INC (OWL); Add: Ares Management CORP - A (ARES) — shares +377.74%; Trim: Meta Platforms Inc-class A (META) — shares -7.89%; Add: Transdigm Group INC (TDG) — shares +57.40%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ARES | Ares Management CORP - A | +7.1% | +377.74% | Add |
| 2 | TDG | Transdigm Group INC | +2.7% | +57.40% | Add |
| 3 | LRN | Stride INC | +1.8% | +33.71% | Add |
| 4 | FA | First Advantage CORP | +0.8% | +26.48% | Add |
| 5 | TKO | Tko Group Holdings INC | +0.7% | +2.85% | Add |
| 6 | MSCI | Msci INC | +0.2% | +2.57% | Add |
| 7 | KSPI | Jsc Kaspi.kz Adr | 0% | -2.17% | Trim |
| 8 | MSFT | Microsoft CORP | -0.1% | +19.66% | Add |
| 9 | GOOG | Alphabet Inc-cl C | -0.2% | -4.91% | Trim |
| 10 | PDD | Pdd Holdings INC | -0.3% | -1.12% | Trim |
| 11 | DCBO | Docebo INC | -0.5% | — | Unchanged |
| 12 | DOCU | Docusign INC | -0.6% | -2.77% | Trim |
| 13 | TSM | Taiwan Semiconductor-sp Adr | -2.3% | -51.15% | Trim |
| 14 | META | Meta Platforms Inc-class A | -2.8% | -7.89% | Trim |
| 15 | INTU | Intuit INC | — | EXIT | Sold out |
| 16 | OWL | Blue Owl Capital INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-18 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-15 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-15 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-15 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-16 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-14 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-15 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-16 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-17 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-16 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-16 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-14 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-14 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-14 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-14 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-14 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-14 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-15 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-14 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-14 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-14 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-15 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-14 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-15 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-15 | Amendment | View on EDGAR |
| 2016-06-30 | 2016-08-15 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-16 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-16 | 13F-HR | View on EDGAR |
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