Bronte Capital Management Pty Ltd. holds a focused book of 51 stocks worth $940.9M as of Q1 2026 (disclosed Apr 27, 2026, a ~27-day 13F lag). This quarter they opened Walt Disney Co and trimmed Regeneron Pharmaceuticals. Their largest long position is Regeneron Pharmaceuticals at 14% of the equity book. They also disclosed $68.9M in call options (bullish), shown separately below and excluded from the equity book.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
85% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Bronte Capital Management Pty Ltd.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| MORGAN STANLEY | 51 / 51 | $107.6B |
| GOLDMAN SACHS GROUP INC | 51 / 51 | $47.5B |
| ROYAL BANK OF CANADA | 51 / 51 | $32.1B |
| UBS Group AG | 51 / 51 | $23.8B |
| BNP PARIBAS FINANCIAL MARKETS | 51 / 51 | $9.3B |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 51 / 51 | $2.7B |
| BlackRock, Inc. | 50 / 51 | $442.7B |
| JPMORGAN CHASE & CO | 50 / 51 | $96.4B |
Ranked by how many of Bronte Capital Management Pty Ltd.'s top 51 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Regeneron Pharmaceuticals COM | $133.5M | 172.8K | 14.2% | ▼−2.3% Reduced · −4K sh | |
| 2 | Alphabet Inc CAP STK CL A | $109.7M | 381.5K | 11.7% | ▼−8.3% Reduced · −34K sh | |
| 3 | Interactive Brokers Group COM CL A | $86.0M | 1.28M | 9.1% | ▼−14% Reduced · −205K sh | |
| 4 | Berkshire Hathaway Inc Del CL B NEW | $74.3M | 155.1K | 7.9% | ▼−4.5% Reduced · −7K sh | |
| 5 | Visa Inc-Class A Shares COM | $72.3M | 239.4K | 7.7% | ▲+1.8% Added · +4K sh | |
| 6 | Amazon Com Inc COM | $59.5M | 285.7K | 6.3% | ▲+2.9% Added · +8K sh | |
| 7 | Philip Morris Intl Inc COM | $56.4M | 341.1K | 6.0% | ▼−14% Reduced · −57K sh | |
| 8 | Corteva Inc COM | $42.1M | 502.8K | 4.5% | ▼−12% Reduced · −66K sh | |
| 9 | Capital One Finl Corp COM | $34.2M | 187.4K | 3.6% | ▲+6.7% Added · +12K sh | |
| 10 | First CTZNS Bancshares Inc N CL A | $31.1M | 16.5K | 3.3% | ▼−3.4% Reduced · −580 sh | |
| 11 | Vaneck ETF Trust GOLD MINERS ETF | $19.1M | 208.1K | 2.0% | ▼−4.4% Reduced · −10K sh | |
| 12 | Disney Walt Co COM | $17.9M | 185.7K | 1.9% | ▲New New position | |
| 13 | BBB Foods Inc CL A COM | $17.2M | 487.6K | 1.8% | ▲+24% Added · +93K sh | |
| 14 | Nektar Therapeutics COM NEW | $14.3M | 198.3K | 1.5% | ▲New New position | |
| 15 | Herbalife Nutrition Ltd COM SHS | $13.8M | 939.9K | 1.5% | ▼−16% Reduced · −180K sh | |
| 16 | Graham Hldgs Co COM CL B | $13.5M | 12.8K | 1.4% | ▼−4.3% Reduced · −570 sh | |
| 17 | Brown Forman Corp CALL | $13.1M | 493.9K | 1.4% | ▲New New position | |
| 18 | Alnylam Pharmaceuticals Inc COM | $12.3M | 37.2K | 1.3% | ▼−4.2% Reduced · −2K sh | |
| 19 | Sotera Health Co COM | $12.1M | 843.7K | 1.3% | ▼−3.6% Reduced · −31K sh | |
| 20 | Ishares TR RUS 2000 GRW ETF | $11.8M | 37.5K | 1.3% | ▲New New position | |
| 21 | Ishares TR ISHARES BIOTECH | $11.7M | 69.3K | 1.2% | ▼−4.3% Reduced · −3K sh | |
| 22 | Sociedad Quimica Y Minera De SPON ADR SER B | $9.9M | 122.4K | 1.1% | ▼−25% Reduced · −41K sh | |
| 23 | Aurora Innovation Inc CLASS A COM | $9.6M | 2.32M | 1.0% | ▲New New position | |
| 24 | Newmont Corp COM | $8.2M | 75.4K | 0.9% | ▼−3.1% Reduced · −2K sh | |
| 25 | Pinterest Inc CL A | $7.9M | 430.9K | 0.8% | ▼−16% Reduced · −81K sh | |
| 26 | Global E Online Ltd SHS | $6.6M | 213.1K | 0.7% | ▲New New position | |
| 27 | Barrick MNG Corp COM SHS | $6.5M | 158.7K | 0.7% | ▼−3.7% Reduced · −6K sh | |
| 28 | Liveramp Hldgs Inc COM | $5.9M | 223.2K | 0.6% | ▼−3.8% Reduced · −9K sh | |
| 29 | Paylocity Hldg Corp COM | $4.0M | 36.6K | 0.4% | ▲New New position | |
| 30 | Turning PT Brands Inc COM | $3.7M | 42.9K | 0.4% | ▲+76% Added · +18K sh | |
| 31 | Mondelez Intl Inc CL A | $3.2M | 56.0K | 0.3% | ▼−13% Reduced · −9K sh | |
| 32 | Vaneck ETF Trust JUNIOR GOLD MINE | $3.2M | 26.6K | 0.3% | ▼−4.3% Reduced · −1K sh | |
| 33 | Sally Beauty Hldgs Inc COM | $3.1M | 220.7K | 0.3% | ▼−70% Reduced · −517K sh | |
| 34 | Bath & Body Works Inc COM | $2.9M | 155.5K | 0.3% | ▼−39% Reduced · −99K sh | |
| 35 | Brown Forman Corp CL A | $2.7M | 100.4K | 0.3% | ▲New New position | |
| 36 | James Riv Group Holdings Inc COM SHS | $2.1M | 339.0K | 0.2% | ▲+174% Added · +215K sh | |
| 37 | Riskified Ltd SHS CL A | $1.9M | 488.5K | 0.2% | ▼−4.9% Reduced · −25K sh | |
| 38 | Nice Ltd SPONSORED ADR | $1.9M | 17.1K | 0.2% | ▼−16% Reduced · −3K sh | |
| 39 | Universal Display Corp COM | $1.0M | 11.1K | 0.1% | ▼−4.6% Reduced · −532 sh | |
| 40 | Verisk Analytics Inc COM | $551K | 2.9K | 0.1% | ▲New New position | |
| 41 | Enovix Corporation COM | $60K | 11.6K | 0.0% | —Held | |
| 42 | Alector Inc COM | $41K | 19.3K | 0.0% | —Held | |
| 43 | Coherus Oncology Inc COM | $33K | 19.3K | 0.0% | —Held | |
| 44 | Caribou Biosciences Inc COM | $30K | 15.6K | 0.0% | —Held | |
| 45 | Fate Therapeutics Inc COM | $27K | 22.9K | 0.0% | —Held | |
| 46 | C4 Therapeutics Inc COM STK | $26K | 10.0K | 0.0% | —Held | |
| 47 | Pliant Therapeutics Inc COM | $23K | 18.6K | 0.0% | —Held | |
| 48 | Invivyd Inc COM | $14K | 11.0K | 0.0% | —Held | |
| 49 | Milestone Pharmaceuticals In COM | $12K | 10.4K | 0.0% | —Held | |
| 50 | Rani Therapeutics Hldgs Inc COM CL A | $11K | 14.9K | 0.0% | —Held |
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1471085/holdings"
Use Arkolith to show Bronte Capital Management Pty Ltd.'s latest holdings, largest changes, and filing provenance.
Put / call positions from the 13F — totals include every disclosed option leg
| Type | Underlying | Notional value | Underlying shares |
|---|---|---|---|
| CALL · bullish | REGENERON PHARMACEUTICALSREGN | $53.0M | 69K |
| CALL · bullish | NEKTAR THERAPEUTICSNKTR | $14.6M | 203K |
| CALL · bullish | ISHARES RUSSELL 2000 GROWTHIWO | $1.4M | 4K |
13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the equity book, weighting, concentration and sector figures above.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | Apr 27, 2026 | 54 | $1.0B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 3, 2026 | 44 | $1.0B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 5, 2025 | 30 | $1.1B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 12, 2025 | 27 | $1.3B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 14, 2025 | 26 | $1.2B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 10, 2025 | 24 | $1.3B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 5, 2024 | 25 | $1.2B | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.