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Bronte Capital Management Pty Ltd. — 13F Holdings & Portfolio

CIK 1471085 · latest 13F-HR filed 2026-08-05

Backtest portfolio

Bronte Capital Management Pty Ltd. manages $931.1M in 13F-reported U.S. long-equity assets across 58 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are GOOGL (11.71%), REGN (10.89%), IBKR (8.26%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 15 new positions and exited 10; 12 existing positions rose in reported value and 19 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM
$931.1M

Long-equity book

Holdings
58

Distinct positions

Period
2026-06-30

Filed 2026-08-05

Q/Q Activity
+15 / −10 / ↑12 / ↓19

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
GOOGL12.3% · -20%REGN11.4% · -6%IBKR8.7% · -31%VISA INC-CLASS8.5% · -8%BRK.B8.2% · -6%AMZN7.0% · -8%PM6.1% · -12%CTVA4.4% · -9%COF3.9% · -7%DIS3.9% · +94%FCNCA3.3% · -14%TBBB2.5% · +9%GENZ1.9% · newAUR1.7% · -6%SHC1.6% · -6%NKTR1.6% · +0%GHC1.5% · -10%IBB1.4% · -5%BF.B1.4% · newALNY1.2% · -5%SQM1.0% · -5%GLBE0.9% · +7%NEM0.7% · -8%B0.6% · -8%RAMP0.5% · -42%HLF0.5% · -66%RVMD0.4% · newTPB0.4% · -5%IJR0.4% · newBBWI0.4% · -8%MDLZ0.3% · -5%RSKD0.3% · +20%BF.A0.3% · -5%TYL0.3% · newPCTY0.2% · -51%NICE0.2% · -4%OLED0.1% · -8%VRSK0.1% · -8%ENVX0.0% · +262%TMCI0.0% · newFATE0.0% · -5%ANTX0.0% · newCCCC0.0% · +3%ALXO0.0% · newBLND0.0% · newPEPG0.0% · newCMRC0.0% · newPACB0.0% · newABOS0.0% · newSEER0.0% · newALEC0.0% · -39%NBP0.0% · newCHRS0.0% · -21%MIST0.0% · +38%GOSS0.0% · new

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

3 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 74.4%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Sep 29, 2026.

Assets Under Management
$2.32B
Discretionary
$2.32B
Employees
11
Accounts
4
Address
SUITE 1703
101 GRAFTON STREET
BONDI JUNCTION 2022
Australia
Phone
+ 61 2 9389 3293
Website
Name Title / Status Ownership Type
CRIKEY CREEK ATF BFWSK TRUST ControlSHAREHOLDER
since Oct 2008
50–75%Foreign Entity
HEMPTON, JOHN, LAWRENCE ControlCHIEF INVESTMENT OFFICER
since Oct 2008
Less than 5%Individual
MAHER, SIMON, DAVID ControlCHIEF COMPLIANCE OFFICER
since Oct 2008
Less than 5%Individual
PHELBE PTY LTD ATF ROCK VALLEY FAMILY TRUST ControlSHAREHOLDER
since Oct 2008
25–50%Foreign Entity
HEMPTON, JOHN, LAWRENCE Control
Indirect owner via CRIKEY CREEK ATF BFWSK TRUST
TRUSTEE
since Oct 2008
75% or moreIndividual
MAHER, SIMON, DAVID Control
Indirect owner via PHELBE PTY LTD ATF ROCK VALLEY FAMILY TRUST
TRUSTEE
since Oct 2008
75% or moreIndividual

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

Show all 12 →

Top Trims

Show all 19 →

New Positions

Show all 15 →

Exited Positions

Show all 10 →

Bronte Capital Management Pty Ltd. Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 ALPHABET INC GOOGL 02079K305 $109.1M 11.71% 305,165 SH
2 REGENERON PHARMACEUTICALS REGN 75886F107 $101.4M 10.89% 162,618 SH
3 INTERACTIVE BROKERS GROUP IBKR 45841N107 $76.9M 8.26% 883,526 SH
4 VISA INC-CLASS A SHARES — 83601L105 $75.5M 8.10% 219,914 SH
5 BERKSHIRE HATHAWAY INC DEL BRK.B 084670702 $73.0M 7.84% 145,847 SH
6 AMAZON COM INC AMZN 023135106 $62.3M 6.69% 261,433 SH
7 PHILIP MORRIS INTL INC PM 718172109 $54.3M 5.83% 300,176 SH
8 REGENERON PHARMACEUTICALS Call REGN 75886F107 $42.8M 4.59% 68,600 SH
9 CORTEVA INC CTVA 22052L104 $38.7M 4.15% 456,656 SH
10 CAPITAL ONE FINL CORP COF 14040H105 $34.8M 3.74% 173,523 SH
11 DISNEY WALT CO DIS 254687106 $34.7M 3.72% 360,243 SH
12 FIRST CTZNS BANCSHARES INC N FCNCA 31946M103 $29.5M 3.17% 14,179 SH
13 BBB FOODS INC TBBB G0896C103 $22.2M 2.39% 533,151 SH
14 AURORA INNOVATION INC AUR 051774107 $14.9M 1.60% 2,186,821 SH
15 VANECK ETF TRUST — M8216R110 $14.5M 1.55% 191,580 SH
16 SOTERA HEALTH CO SHC 83601L103 $14.1M 1.52% 797,138 SH
17 NEKTAR THERAPEUTICS NKTR 640268306 $13.9M 1.49% 198,434 SH
18 GRAHAM HLDGS CO GHC 384637104 $13.1M 1.40% 11,454 SH
19 ISHARES TR IBB 464287556 $12.5M 1.34% 65,807 SH
20 BROWN FORMAN CORP BF.B 115637209 $12.4M 1.33% 464,313 SH
21 ALNYLAM PHARMACEUTICALS INC ALNY 02043Q107 $10.7M 1.14% 35,384 SH
22 SOCIEDAD QUIMICA Y MINERA DE SQM 833635105 $8.6M 0.92% 116,308 SH
23 GLOBAL E ONLINE LTD GLBE M5216V106 $7.9M 0.85% 227,644 SH
24 NEWMONT CORP NEM 651639106 $6.5M 0.70% 69,494 SH
25 BARRICK MNG CORP B 06849F108 $5.4M 0.58% 146,359 SH
26 LIVERAMP HLDGS INC RAMP 53815P108 $4.8M 0.52% 128,348 SH
27 HERBALIFE NUTRITION LTD HLF G4412G101 $4.3M 0.46% 323,386 SH
28 REVOLUTION MEDICINES INC RVMD 76155X100 $3.5M 0.38% 18,780 SH
29 TURNING PT BRANDS INC TPB 90041L105 $3.5M 0.37% 40,721 SH
30 ISHARES TR IJR 464287804 $3.4M 0.37% 23,004 SH
31 BATH & BODY WORKS INC BBWI 070830104 $3.3M 0.36% 143,800 SH
32 MONDELEZ INTL INC MDLZ 609207105 $3.1M 0.33% 53,234 SH
33 RISKIFIED LTD RSKD M8216R109 $3.0M 0.32% 588,251 SH
34 BROWN FORMAN CORP BF.A 115637100 $2.6M 0.28% 95,365 SH
35 TYLER TECHNOLOGIES INC TYL 902252105 $2.4M 0.26% 8,302 SH
36 VANECK ETF TRUST — 83601L104 $2.4M 0.26% 24,568 SH
37 PAYLOCITY HLDG CORP PCTY 70438V106 $1.9M 0.20% 17,874 SH
38 NICE LTD NICE 653656108 $1.5M 0.16% 16,396 SH
39 UNIVERSAL DISPLAY CORP OLED 91347P105 $889.2K 0.10% 10,269 SH
40 VERISK ANALYTICS INC VRSK 92345Y106 $481.5K 0.05% 2,682 SH
41 ENOVIX CORPORATION ENVX 293594107 $70.1K 0.01% 11,550 SH
42 TREACE MED CONCEPTS INC TMCI 89455T109 $62.0K 0.01% 15,577 SH
43 FATE THERAPEUTICS INC FATE 31189P102 $58.7K 0.01% 21,740 SH
44 AN2 THERAPEUTICS INC ANTX 037326105 $52.7K 0.01% 10,895 SH
45 C4 THERAPEUTICS INC CCCC 12529R107 $48.3K 0.01% 10,349 SH
46 ALX ONCOLOGY HLDGS INC ALXO 00166B105 $37.5K 0.00% 18,095 SH
47 BLEND LABS INC BLND 09352U108 $32.9K 0.00% 19,247 SH
48 PEPGEN INC PEPG 713317105 $32.0K 0.00% 17,776 SH
49 COMMERCE.COM INC CMRC 08975P108 $30.4K 0.00% 10,278 SH
50 PACIFIC BIOSCIENCES CALIF IN PACB 69404D108 $30.0K 0.00% 17,881 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-05 $931.1M 58 0001471085-26-000004
2026-03-31 2026-04-27 $1.01B 54 0001471085-26-000002
2025-12-31 2026-02-03 $1.00B 44 0001471085-26-000001
Filer Information
Address
SUITE 1703, 101 GRAFTON ST
Bondi Junction, C3 2022
Phone
001 61 2 9389 3293
Filing Manager
Bronte Capital Management Pty Ltd.
Bondi Junction, C3
Signatory
Simon Maher
Managing Director