Bronte Capital Management Pty Ltd
- Regulatory AUM
- $1.1B
- Discretionary
- $1.1B
- Clients
- 6
- Avg AUM / client
- $191M
- Accounts
- 6
- Employees
- 11
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Sep 16, 2025
Investments (13F portfolio — 51 positions, $1,009,822,279)
13F period Mar 31, 2026| # | Issuer | Class | Value | Shares | % of 13F | % of AUM |
|---|---|---|---|---|---|---|
| 1 | Regeneron Pharmaceuticals | COM | $186,452,430 | 241,387 | 18.5% | 16.2% |
| 2 | Alphabet Inc | CAP STK CL A | $109,701,264 | 381,490 | 10.9% | 9.56% |
| 3 | Interactive Brokers Group | COM CL A | $85,965,698 | 1,281,731 | 8.51% | 7.49% |
| 4 | Berkshire Hathaway Inc Del | CL B NEW | $74,306,190 | 155,063 | 7.36% | 6.48% |
| 5 | Visa Inc Class A Shares | COM | $72,347,189 | 239,370 | 7.16% | 6.3% |
| 6 | Amazon Com Inc | COM | $59,510,862 | 285,739 | 5.89% | 5.19% |
| 7 | Philip Morris Intl Inc | COM | $56,397,143 | 341,098 | 5.58% | 4.91% |
| 8 | Corteva Inc | COM | $42,088,551 | 502,790 | 4.17% | 3.67% |
| 9 | Capital One Finl Corp | COM | $34,181,727 | 187,369 | 3.38% | 2.98% |
| 10 | First Ctzns Bancshares Inc N | CL A | $31,081,813 | 16,492 | 3.08% | 2.71% |
| 11 | Nektar Therapeutics | COM NEW | $28,834,394 | 400,756 | 2.86% | 2.51% |
| 12 | Vaneck Etf Trust | GOLD MINERS ETF | $19,096,236 | 208,088 | 1.89% | 1.66% |
| 13 | Disney Walt Co | COM | $17,895,549 | 185,677 | 1.77% | 1.56% |
| 14 | Bbb Foods Inc | CL A COM | $17,244,644 | 487,550 | 1.71% | 1.5% |
| 15 | Herbalife Nutrition Ltd | COM SHS | $13,835,711 | 939,926 | 1.37% | 1.21% |
| 16 | Graham Hldgs Co | COM CL B | $13,517,069 | 12,785 | 1.34% | 1.18% |
| 17 | Ishares Tr | RUS 2000 GRW ETF | $13,161,819 | 41,942 | 1.3% | 1.15% |
| 18 | Brown Forman Corp | CALL | $13,058,769 | 493,902 | 1.29% | 1.14% |
| 19 | Alnylam Pharmaceuticals Inc | COM | $12,323,253 | 37,245 | 1.22% | 1.07% |
| 20 | Sotera Health Co | COM | $12,098,801 | 843,710 | 1.2% | 1.05% |
| 21 | Ishares Tr | ISHARES BIOTECH | $11,695,395 | 69,265 | 1.16% | 1.02% |
| 22 | Sociedad Quimica Y Minera De | SPON ADR SER B | $9,908,594 | 122,419 | 0.98% | 0.86% |
| 23 | Aurora Innovation Inc | CLASS A COM | $9,553,242 | 2,318,748 | 0.95% | 0.83% |
| 24 | Newmont Corp | COM | $8,162,916 | 75,408 | 0.81% | 0.71% |
| 25 | Pinterest Inc | CL A | $7,903,623 | 430,950 | 0.78% | 0.69% |
Top 25 of 51 positions from the manager's latest Form 13F · source filing (EDGAR) ↗. 13F covers long US-listed positions only. "% of AUM" is share of the firm's total regulatory AUM (Form ADV Item 5.F).
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 6 | $1.1B | 100.0% |
Private funds (3)
Reported in Form ADV Section 7.B.(1), filing of Sep 2024 · $1.0B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Cassini Partners, L.P. | Hedge Fund | Delaware | $528M | 2 |
| Bronte Cayman Master Fund Ltd master | Hedge Fund | Cayman Islands | $379M | 81 |
| Bronte Capital Callisto Fund Llc | Hedge Fund | Delaware | $127M | 58 |
People (2)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Hempton, John, Lawrence | Chief Investment Officer | Oct 2008 (18y) | ≈ 37.5% – 75% via Crikey Creek Atf Bfwsk Trust | |
| Maher, Simon, David | Chief Compliance Officer | Oct 2008 (18y) | ≈ 18.75% – 50% via Phelbe Pty Ltd Atf Rock Valley Family Trust |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Crikey Creek Atf Bfwsk Trust | Shareholder | Oct 2008 | A | 50% – 75% |
| Phelbe Pty Ltd Atf Rock Valley Family Trust | Shareholder | Oct 2008 | A | 25% – 50% |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Hempton, John, Lawrence: 75% – 100% of Crikey Creek Atf Bfwsk Trust × 50% – 75% direct ≈ 37.5% – 75% of the firm
- Maher, Simon, David: 75% – 100% of Phelbe Pty Ltd Atf Rock Valley Family Trust × 25% – 50% direct ≈ 18.75% – 50% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (3, $1.0B gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Cassini Partners, L.P. | Hedge Fund | $528M | $100K | 2 |
| Bronte Cayman Master Fund Ltd | Hedge Fund | $379M | $500K | 81 |
| Bronte Capital Callisto Fund Llc | Hedge Fund | $127M | $500K | 58 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 09/16/2025 | 2.02 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
Custody
Firm reports it does not have custody of client funds or securities (Item 9.A).
No custodian data reported or mined yet.
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Sep 16, 2025.
View current Form ADV (SEC/IAPD) ↗