Bronte Capital Management Pty Ltd.
CIK 1471085 · Holdings on Sep 30, 2025 · First reported Nov 5, 2025
Top ten holdings
Q3 2025- IBKR12.19%
- GOOGL10.45%
- REGN10.20%
- BRK.B8.84%
- 83601L1058.10%
- PM6.82%
- AMZN6.43%
- COF5.65%
- IBB4.09%
- CTVA3.89%
Share classes counted separately76.66%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- IJRWeight decreased · -3.97 pp5.11% → 1.14%Shares -460.60K (-82.85%)
- GOOGLWeight increased · +2.40 pp8.05% → 10.45%Shares -88.91K (-17.23%)
- PMWeight decreased · -1.91 pp8.73% → 6.82%Shares -123.45K (-22.81%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 29
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | IBKRINTERACTIVE BROKERS GRO-CL ACOM CL A View history and evidence | $135.43M | 12.19% | 1.76M shares | 11.79% → 12.19%+0.40 pp -643.48K (-26.76%) | Reduced | ↗▾ |
| 02 | GOOGLALPHABET INC-CL ACAP STK CL A View history and evidence | $116.04M | 10.45% | 427.14K shares | 8.05% → 10.45%+2.40 pp -88.91K (-17.23%) | Reduced | ↗▾ |
| 03 | REGNREGENERON PHARMACEUTICALS View history and evidence | $113.28M | 10.20% | 180.28K shares | 8.73% → 10.20%+1.47 pp -7.59K (-4.04%) | Reduced | ↗▾ |
| 04 | BRK.BBERKSHIRE HATHAWAY INC-CL BCL B NEW View history and evidence | $98.17M | 8.84% | 174.73K shares | 9.48% → 8.84%-0.64 pp -45.58K (-20.69%) | Reduced | ↗▾ |
| 05 | 83601L105VISA INC-CLASS A SHARES View history and evidence | $89.98M | 8.10% | 235.85K shares | 8.46% → 8.10%-0.36 pp -33.40K (-12.41%) | Reduced | ↗▾ |
| 06 | PMPHILIP MORRIS INTERNATIONAL View history and evidence | $75.70M | 6.82% | 417.65K shares | 8.73% → 6.82%-1.91 pp -123.45K (-22.81%) | Reduced | ↗▾ |
| 07 | AMZNAMAZON.COM INC View history and evidence | $71.47M | 6.43% | 291.26K shares | 7.53% → 6.43%-1.10 pp -96.89K (-24.96%) | Reduced | ↗▾ |
| 08 | COFCAPITAL ONE FINANCIAL CORP View history and evidence | $62.74M | 5.65% | 264.11K shares | 6.53% → 5.65%-0.88 pp -82.84K (-23.88%) | Reduced | ↗▾ |
| 09 | IBBISHARES BIOTECHNOLOGY ETFISHARES BIOTECH View history and evidence | $45.42M | 4.09% | 281.42K shares | 3.31% → 4.09%+0.78 pp -13.92K (-4.71%) | Reduced | ↗▾ |
| 10 | CTVACORTEVA INC View history and evidence | $43.16M | 3.89% | 571.02K shares | 4.27% → 3.89%-0.38 pp -76.80K (-11.86%) | Reduced | ↗▾ |
Options overlay 1
$5.98M notionalPut and Call positions are separate. Notional is based on underlying securities, not option premium, market value or net exposure. Quantities are underlying shares.
| Security | Put / Call | Underlying shares | Notional | Quantity change | |
|---|---|---|---|---|---|
IWOISHARES RUSSELL 2000 GROWTHRUS 2000 GRW ETF View history and evidence | Call | 18.70K | $5.98M | +18.70K | ▾ |
1 / 1 options · preview only
Exited positions 1
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| H33700107 GLOBAL BLUE GROUP HOLDING AG | Non-derivative | -100,917 | -$851.81K | SEC filing ↗ | SEC filing ↗ |
1 / 1 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 1471085 · Period 2025-09-30
Data loaded 2026-09-23 · First reported 2025-11-05
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 1116770535
}Take these holdings further.
This page includes 30 of 30 reported holdings. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#portfolio-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 30 of 30 current positions (options included); totals and weights use the complete filing.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
get_institutional_portfolio
{"cik":"1471085","quarter":"2025Q3","page_size":100}
get_institutional_manager_history
{"cik":"1471085","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.