Bronte Capital Management Pty Ltd.
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 3, 2026), Bronte Capital Management Pty Ltd. reported 43 stock positions worth $956.8 million. Its top holding was Regeneron Pharmaceuticals (REGN) at 14.3% of the portfolio, followed by Alphabet Class A (GOOGL, 13.6%) and Interactive Brokers Gro Class A (IBKR, 10.0%). Compared with Q3 2025, it opened 16 new positions, sold out of 2, added to 3 and reduced 23. The biggest buy was a new position in BBB Foods Class A (TBBB) and the biggest sale iShares Biotechnology ETF (IBB, shares −74%).
- Most Recent 13F
- Q2 2026
- Location
- Bondi Junction, C3
- CIK
- 0001471085
- Portfolio Value
- $956.8M (Q4 2025)
- SEC Filing
- 0001471085-26-000001 ↗ filed Feb 3, 2026
Holdings Value
Holdings 43 stocks · $956.8M
| REGN Regeneron Pharmaceuticals | 14.26% | 176,768 | $136.4M | Reduce -1.9% |
| GOOGL Alphabet Inc. Class A | 13.61% | 415,963 | $130.2M | Reduce -2.6% |
| IBKR Interactive Brokers Gro Class A | 9.99% | 1,486,294 | $95.6M | Reduce -15.6% |
| VISA INC-CLASS A SHARES | 8.62% | 235,154 | $82.5M | Reduce -0.3% |
| BRK.B Berkshire Hathaway Inc. Class B | 8.53% | 162,327 | $81.6M | Reduce -7.1% |
| AMZN Amazon.com Inc. | 6.70% | 277,641 | $64.1M | Reduce -4.7% |
| PM Philip Morris International | 6.68% | 398,556 | $63.9M | Reduce -4.6% |
| COF Capital One Financial Corp. | 4.45% | 175,540 | $42.5M | Reduce -33.5% |
| CTVA Corteva Inc. | 3.99% | 569,033 | $38.1M | Reduce -0.3% |
| FCNCA First Citizens Bcshs Class A | 3.83% | 17,072 | $36.6M | Reduce -17.2% |
| VANECK ETF TRUST | 1.95% | 217,657 | $18.7M | Reduce -29.1% |
| ALNY Alnylam Pharmaceuticals Inc. | 1.62% | 38,864 | $15.5M | Add +11.1% |
| SOTERA HEALTH CO | 1.61% | 874,926 | $15.4M | Reduce -1.2% |
| GHC Graham Holdings Co. Class B | 1.53% | 13,355 | $14.7M | Reduce -0.3% |
| HLF Herbalife Ltd. | 1.51% | 1,120,175 | $14.4M | Reduce -17.6% |
| PINS Pinterest Inc. Class A | 1.39% | 512,196 | $13.3M | Reduce -21.1% |
| TBBB BBB Foods Inc. Class A | 1.38% | 394,158 | $13.2M | New |
| IBB iShares Biotechnology ETF | 1.28% | 72,350 | $12.2M | Reduce -74.3% |
| SQM Quimica Y Minera Chil-SP ADR filed as SOCIEDAD QUIMICA Y MINERA DE | 1.18% | 163,457 | $11.2M | Reduce -0.7% |
| SBH Sally Beauty Holdings Inc. | 1.10% | 737,250 | $10.5M | Reduce -31.8% |
| NEM Newmont Corp. | 0.81% | 77,856 | $7.8M | Reduce -0.2% |
| B Barrick Mining Corp. | 0.75% | 164,856 | $7.2M | Reduce -22.6% |
| RAMP Liveramp Holdings Inc. | 0.71% | 231,994 | $6.8M | Add +0.3% |
| BBWI Bath & Body Works Inc. | 0.53% | 254,611 | $5.1M | Add +121.8% |
| MDLZ Mondelez International Inc. Class A | 0.36% | 64,547 | $3.5M | Reduce -2.0% |
| VANECK ETF TRUST | 0.33% | 27,763 | $3.2M | Reduce -81.6% |
| FICO Fair Isaac Corp. | 0.28% | 1,567 | $2.6M | New |
| TPB Turning Point Brands Inc. | 0.28% | 24,372 | $2.6M | New |
| RSKD Riskified Ltd. Class A | 0.27% | 513,676 | $2.6M | Reduce 0.0% |
| NICE Nice Ltd. - Spon ADR | 0.24% | 20,322 | $2.3M | New |
| OLED Universal Display Corp. | 0.14% | 11,653 | $1.4M | New |
| JRVR James River Group Holdings I | 0.08% | 123,575 | $786K | New |
| ENVX Enovix Corp. | 0.01% | 11,550 | $84K | No change |
| GUTS Fractyl Health Inc. | 0.00% | 16,905 | $37K | New |
| ALEC Alector Inc. | 0.00% | 19,282 | $30K | New |
| CHRS Coherus Oncology Inc. | 0.00% | 19,282 | $27K | New |
| IVVD Invivyd Inc. | 0.00% | 11,012 | $27K | New |
| CRBU Caribou Biosciences Inc. | 0.00% | 15,627 | $25K | New |
| PLRX Pliant Therapeutics Inc. | 0.00% | 18,613 | $23K | New |
| FATE Fate Therapeutics Inc. | 0.00% | 22,853 | $22K | New |
| MIST Milestone Pharmaceuticals Inc. | 0.00% | 10,414 | $21K | New |
| RANI Rani Therapeutics Holdings Class A | 0.00% | 14,868 | $20K | New |
| CCCC C4 Therapeutics Inc. | 0.00% | 10,033 | $19K | New |
Options reported separately and not counted above: REGN calls ($45.8M).
Portfolio Sells Q3 2025 → Q4 2025
| IBB iShares Biotechnology ETF | Reduce -74.3% | 1.28% | −2.81 |
| IBKR Interactive Brokers Gro Class A | Reduce -15.6% | 9.99% | −2.20 |
| ABVX Abivax SA-ADR | Sold out | 0.00% | −1.35 |
| COF Capital One Financial Corp. | Reduce -33.5% | 4.45% | −1.20 |
| VANECK ETF TRUST | Reduce -81.6% | 0.33% | −1.17 |
| IJR iShares Core S&P Small-Cap E | Sold out | 0.00% | −1.14 |
| PINS Pinterest Inc. Class A | Reduce -21.1% | 1.39% | −0.72 |
| SBH Sally Beauty Holdings Inc. | Reduce -31.8% | 1.10% | −0.67 |
| VANECK ETF TRUST | Reduce -29.1% | 1.95% | −0.41 |
| BRK.B Berkshire Hathaway Inc. Class B | Reduce -7.1% | 8.53% | −0.31 |
| PM Philip Morris International | Reduce -4.6% | 6.68% | −0.13 |
| GHC Graham Holdings Co. Class B | Reduce -0.3% | 1.53% | −0.05 |
| MDLZ Mondelez International Inc. Class A | Reduce -2.0% | 0.36% | −0.05 |
| RSKD Riskified Ltd. Class A | Reduce 0.0% | 0.27% | +0.03 |
| B Barrick Mining Corp. | Reduce -22.6% | 0.75% | +0.05 |
| CTVA Corteva Inc. | Reduce -0.3% | 3.99% | +0.10 |
| FCNCA First Citizens Bcshs Class A | Reduce -17.2% | 3.83% | +0.12 |
| NEM Newmont Corp. | Reduce -0.2% | 0.81% | +0.15 |
| SOTERA HEALTH CO | Reduce -1.2% | 1.61% | +0.21 |
| AMZN Amazon.com Inc. | Reduce -4.7% | 6.70% | +0.26 |
| HLF Herbalife Ltd. | Reduce -17.6% | 1.51% | +0.36 |
| SQM Quimica Y Minera Chil-SP ADR | Reduce -0.7% | 1.18% | +0.46 |
| VISA INC-CLASS A SHARES | Reduce -0.3% | 8.62% | +0.52 |
| GOOGL Alphabet Inc. Class A | Reduce -2.6% | 13.61% | +3.16 |
| REGN Regeneron Pharmaceuticals | Reduce -1.9% | 14.26% | +4.06 |
Portfolio Buys Q3 2025 → Q4 2025
| TBBB BBB Foods Inc. Class A | New | 1.38% | +1.38 |
| FICO Fair Isaac Corp. | New | 0.28% | +0.28 |
| TPB Turning Point Brands Inc. | New | 0.28% | +0.28 |
| NICE Nice Ltd. - Spon ADR | New | 0.24% | +0.24 |
| BBWI Bath & Body Works Inc. | Add +121.8% | 0.53% | +0.24 |
| OLED Universal Display Corp. | New | 0.14% | +0.14 |
| JRVR James River Group Holdings I | New | 0.08% | +0.08 |
| RAMP Liveramp Holdings Inc. | Add +0.3% | 0.71% | +0.08 |
| ALNY Alnylam Pharmaceuticals Inc. | Add +11.1% | 1.62% | +0.01 |
| GUTS Fractyl Health Inc. | New | 0.00% | +0.00 |
| ALEC Alector Inc. | New | 0.00% | +0.00 |
| CHRS Coherus Oncology Inc. | New | 0.00% | +0.00 |
| IVVD Invivyd Inc. | New | 0.00% | +0.00 |
| CRBU Caribou Biosciences Inc. | New | 0.00% | +0.00 |
| PLRX Pliant Therapeutics Inc. | New | 0.00% | +0.00 |
| FATE Fate Therapeutics Inc. | New | 0.00% | +0.00 |
| MIST Milestone Pharmaceuticals Inc. | New | 0.00% | +0.00 |
| RANI Rani Therapeutics Holdings Class A | New | 0.00% | +0.00 |
| CCCC C4 Therapeutics Inc. | New | 0.00% | +0.00 |
Options Activity Q3 2025 → Q4 2025
| REGN Regeneron Pharmaceuticals | call | New | 59,300 | $45.8M |
| IWO iShares Russell 2000 Growth | call | Sold out | 18,700 | $6.0Mbefore exit |
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 56 | $888.3M | GOOGL, REGN, IBKR, VISA INC-CLASS A SHARES, BRK.B |
| Q1 2026 | 51 | $940.9M | REGN, GOOGL, IBKR, BRK.B, VISA INC-CLASS A SHARES |
| Q4 2025 | 43 | $956.8M | REGN, GOOGL, IBKR, VISA INC-CLASS A SHARES, BRK.B |
| Q3 2025 | 29 | $1.1B | IBKR, GOOGL, REGN, BRK.B, VISA INC-CLASS A SHARES |
| Q2 2025 | 27 | $1.3B | IBKR, BRK.B, PM, REGN, VISA INC-CLASS A SHARES |
| Q1 2025 | 26 | $1.2B | IJR, BRK.B, REGN, IBKR, PM |
| Q4 2024 | 24 | $1.3B | IJR, REGN, IBKR, GOOGL, BRK.B |
| Q3 2024 | 25 | $1.2B | BRK.B, GOOGL, REGN, IBKR, IJR |
| Q2 2024 | 28 | $1.3B | GOOGL, REGN, BRK.B, IBKR, IJR |
| Q1 2024 | 29 | $1.2B | GOOGL, BRK.B, REGN, IBKR, VISA INC-CLASS A SHARES |