Bronte Capital Management Pty Ltd. 13F holdings, Q4 2025
Bronte Capital Management Pty Ltd. disclosed 43 US equity positions worth $956.8m in its Q4 2025 13F filing. Its largest position is REGN at 14.3% of the reported book, followed by GOOGL and IBKR. Versus Q3 2025 it opened 16 new positions, added to 2, reduced 18 and exited 2.
- $957m
- Reported equity book Sum of the long US equity positions in the filing, at the values filed. Options are excluded.
- 43
- Positions Distinct securities in the equity book with a reported value above zero. Options are excluded.
- 14.3%
- Largest position The largest single position as a share of the reported equity book.
- 80.6%
- Top 10 weight The ten largest positions together, as a share of the reported equity book.
- 13
- Effective positions 1 / HHI of portfolio weights: the number of equal-weight positions the book behaves like.
- 31
- Quarters on file since Q4 2018 Quarters for which this manager's 13F holdings are on record.
Holdings
Against Q3 2025: 16 new, 2 added, 18 reduced, 2 exited
| REGN REGENERON PHARMACEUTICALS | 14.3% | −1.9% | reduced |
| GOOGL ALPHABET INC | 13.6% | −2.6% | reduced |
| IBKR INTERACTIVE BROKERS GROUP IN | 10.0% | −16% | reduced |
| VISA INC-CLASS A SHARES no ticker | 8.6% | −0.3% | held |
| BRK/B BERKSHIRE HATHAWAY INC DEL | 8.5% | −7.1% | reduced |
| AMZN AMAZON COM INC | 6.7% | −4.7% | reduced |
| PM PHILIP MORRIS INTL INC | 6.7% | −4.6% | reduced |
| COF CAPITAL ONE FINL CORP | 4.4% | −34% | reduced |
| CTVA CORTEVA INC | 4.0% | −0.3% | held |
| FCNCA FIRST CTZNS BANCSHARES INC N | 3.8% | −17% | reduced |
| VANECK ETF TRUST no ticker | 2.0% | −29% | reduced |
| ALNY ALNYLAM PHARMACEUTICALS INC | 1.6% | +11% | added |
| SOTERA HEALTH CO no ticker | 1.6% | −1.2% | reduced |
| GHC GRAHAM HLDGS CO | 1.5% | −0.3% | held |
| HLF HERBALIFE LTD | 1.5% | −18% | reduced |
| PINS PINTEREST INC | 1.4% | −21% | reduced |
| TBBB BBB FOODS INC | 1.4% | – | new |
| IBB ISHARES TR | 1.3% | −74% | reduced |
| SQM SOCIEDAD QUIMICA Y MINERA DE | 1.2% | −0.7% | reduced |
| SBH SALLY BEAUTY HLDGS INC | 1.1% | −32% | reduced |
| NEM NEWMONT CORP | 0.8% | −0.2% | held |
| B BARRICK MNG CORP | 0.8% | −23% | reduced |
| RAMP LIVERAMP HLDGS INC | 0.7% | +0.3% | held |
| BBWI BATH & BODY WORKS INC | 0.5% | +122% | added |
| MDLZ MONDELEZ INTL INC | 0.4% | −2.0% | reduced |
| VANECK ETF TRUST no ticker | 0.3% | −82% | reduced |
| FICO FAIR ISAAC CORP | 0.3% | – | new |
| TPB TURNING PT BRANDS INC | 0.3% | – | new |
| RSKD RISKIFIED LTD | 0.3% | 0.0% | held |
| NICE NICE LTD | 0.2% | – | new |
| OLED UNIVERSAL DISPLAY CORP | 0.1% | – | new |
| JRVR JAMES RIV GROUP HOLDINGS INC | 0.08% | – | new |
| ENVX ENOVIX CORPORATION | 0.01% | 0.0% | held |
| GUTS FRACTYL HEALTH INC | 0.0% | – | new |
| ALEC ALECTOR INC | 0.0% | – | new |
| CHRS COHERUS ONCOLOGY INC | 0.0% | – | new |
| IVVD INVIVYD INC | 0.0% | – | new |
| CRBU CARIBOU BIOSCIENCES INC | 0.0% | – | new |
| PLRX PLIANT THERAPEUTICS INC | 0.0% | – | new |
| FATE FATE THERAPEUTICS INC | 0.0% | – | new |
| MIST MILESTONE PHARMACEUTICALS IN | 0.0% | – | new |
| RANI RANI THERAPEUTICS HLDGS INC | 0.0% | – | new |
| CCCC C4 THERAPEUTICS INC | 0.0% | – | new |
Exited since Q3 2025
Sector mix
Book over time
Every quarter on file (31)
| Quarter | Positions | Equity book |
|---|---|---|
| Q2 2026 | 56 | $888m |
| Q1 2026 | 51 | $941m |
| Q4 2025 | 43 | $957m |
| Q3 2025 | 29 | $1.1bn |
| Q2 2025 | 27 | $1.3bn |
| Q1 2025 | 26 | $1.2bn |
| Q4 2024 | 24 | $1.3bn |
| Q3 2024 | 25 | $1.2bn |
| Q2 2024 | 28 | $1.3bn |
| Q1 2024 | 29 | $1.2bn |
| Q4 2023 | 29 | $1.1bn |
| Q3 2023 | 28 | $993m |
| Q2 2023 | 32 | $1.0bn |
| Q1 2023 | 30 | $862m |
| Q4 2022 | 27 | $793m |
| Q3 2022 | 28 | $803m |
| Q2 2022 | 30 | $829m |
| Q1 2022 | 28 | $709m |
| Q4 2021 | 24 | $770m |
| Q3 2021 | 23 | $694m |
| Q2 2021 | 17 | $666m |
| Q1 2021 | 14 | $571m |
| Q4 2020 | 13 | $517m |
| Q3 2020 | 12 | $517m |
| Q2 2020 | 10 | $446m |
| Q1 2020 | 11 | $377m |
| Q4 2019 | 7 | $344m |
| Q3 2019 | 10 | $336m |
| Q2 2019 | 9 | $263m |
| Q1 2019 | 11 | $266m |
| Q4 2018 | 9 | $239m |
Where Bronte Capital Management Pty Ltd. was early
Concentration and tenure
- 14.8%
- Median largest position, all quarters The largest single position as a share of the reported equity book.
- 79.8%
- Median top 10 weight, all quarters The ten largest positions together, as a share of the reported equity book.
- Concentrated
- Style, by median largest position
- 3
- Median completed holding, quarters