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BCM

Bronte Capital Management Portfolio holdings

AUM $1.01B
1-Year Est. Return 47.99%
This Fund
S&P 500
This Quarter Est. Return
+23.57%
1 Year Est. Return
+47.99%
3 Year Est. Return
+112.22%
5 Year Est. Return
+138.3%
10 Year Est. Return
–
AUM
$1.12B
AUM Growth
-$156M
Cap. Flow
-$229M
Cap. Flow %
-20.51%
Top 10 Hldgs %
76.24%
Holding
31
New
4
Increased
–
Reduced
26
Closed
1

Top Buys

Rank Stock Value
1
ALNY icon
Alnylam Pharmaceuticals
ALNY
+$14.2M
2
ABVX
Abivax
ABVX
+$9.61M
3
ENVX icon
Enovix
ENVX
+$128K

Top Sells

Rank Stock Value
1
IJR icon
iShares Core S&P Small-Cap ETF
IJR
+$53M
2
IBKR icon
Interactive Brokers
IBKR
+$40.5M
3
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$22.1M
4
AMZN icon
Amazon
AMZN
+$21.9M
5
PM icon
Philip Morris
PM
+$20.8M

Sector Composition

Rank Sector Weight
1 Financials 30.23%
2 Healthcare 13.08%
3 Communication Services 12.48%
4 Consumer Discretionary 8.46%
5 Consumer Staples 8.34%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IBKR icon
1
Interactive Brokers
IBKR
$38.4B
$135M 12.13%
1,761,171
-643,478
-27% -$40.5M
GOOGL icon
2
Alphabet (Google) Class A
GOOGL
$4.12T
$116M 10.39%
427,139
-88,909
-17% -$18.6M
REGN icon
3
Regeneron Pharmaceuticals
REGN
$72.9B
$113M 10.14%
180,283
-7,587
-4% -$4.29M
BRK.B icon
4
Berkshire Hathaway Class B
BRK.B
$1.1T
$98.2M 8.79%
174,728
-45,576
-21% -$22.1M
PM icon
5
Philip Morris
PM
$309B
$75.7M 6.78%
417,650
-123,451
-23% -$20.8M
AMZN icon
6
Amazon
AMZN
$2.44T
$71.5M 6.4%
291,265
-96,891
-25% -$21.9M
COF icon
7
Capital One
COF
$128B
$62.7M 5.62%
264,109
-82,841
-24% -$18.1M
IBB icon
8
iShares Biotechnology ETF
IBB
$9.45B
$45.4M 4.07%
281,422
-13,924
-5% -$1.9M
CTVA icon
9
Corteva
CTVA
$60.5B
$43.2M 3.86%
571,018
-76,802
-12% -$5.57M
FCNCA icon
10
First Citizens BancShares
FCNCA
$24.7B
$41.2M 3.69%
20,620
-3,578
-15% -$7.05M
PINS icon
11
Pinterest
PINS
$13.7B
$23.3M 2.09%
649,282
-306,548
-32% -$11.1M
SBH icon
12
Sally Beauty Holdings
SBH
$1.47B
$19.7M 1.76%
1,081,195
-200,740
-16% -$2.52M
ALNY icon
13
Alnylam Pharmaceuticals
ALNY
$38.3B
$17.8M 1.6%
+34,974
New +$14.2M
GHC icon
14
Graham Holdings Company
GHC
$5.31B
$17.6M 1.58%
13,397
-5,147
-28% -$5.32M
ABVX
15
Abivax
ABVX
$10.4B
$14.9M 1.34%
+156,747
New +$9.61M
HLF icon
16
Herbalife
HLF
$1.3B
$12.8M 1.15%
1,358,989
-864,794
-39% -$8.16M
IJR icon
17
iShares Core S&P Small-Cap ETF
IJR
$109B
$12.7M 1.13%
95,350
-460,595
-83% -$53M
SQM icon
18
Sociedad Química y Minera de Chile
SQM
$19.3B
$7.9M 0.71%
164,587
-4,980
-3% -$208K
B
19
Barrick Mining
B
$60.9B
$7.8M 0.7%
213,069
-15,524
-7% -$393K
NEM icon
20
Newmont
NEM
$96.2B
$7.35M 0.66%
78,015
-5,685
-7% -$396K
RAMP icon
21
LiveRamp
RAMP
$2.29B
$7.02M 0.63%
231,395
-47,783
-17% -$1.41M
IWO icon
22
CALL
iShares Russell 2000 Growth ETF
IWO
$14.1B
$5.98M 0.54%
+18,700
New +$5.64M
MDLZ icon
23
Mondelez International
MDLZ
$83.4B
$4.6M 0.41%
65,871
-465
-0.7% -$30K
BBWI icon
24
Bath & Body Works
BBWI
$3.97B
$3.3M 0.3%
114,801
-12,975
-10% -$385K
RSKD icon
25
Riskified
RSKD
$719M
$2.68M 0.24%
513,696
-18,233
-3% -$89.8K
1
2

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AG
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GA
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CT
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AH
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PIM
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WA
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MIM
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Bronte Capital Management's Q3 2025 Portfolio in Review

As of Q3 2025, Bronte Capital Management held 31 positions worth $1.12B, down 12% from $1.27B the previous quarter. Its ten largest holdings account for 76% of the portfolio.

Bronte Capital Management withdrew a net $229M in Q3 2025, closing 1 position and reducing 26 holdings. Its most notable exit was Global Blue Group Holding, an estimated $852K position sold in full.

By sector, the portfolio is most concentrated in Financials at 30% of assets, down from 32% a quarter earlier, followed by Healthcare and Communication Services.

Against the trend, Bronte Capital Management opened a new position in Alnylam Pharmaceuticals worth $17.8M.

  • Bronte Capital Management's largest Q3 2025 buy was Alnylam Pharmaceuticals: 34,974 shares worth $17.8M.
  • Bronte Capital Management's biggest Q3 2025 reduction was iShares Core S&P Small-Cap ETF, cutting an estimated $53M.
  • Bronte Capital Management fully exited Global Blue Group Holding in Q3 2025, selling an estimated $852K.
  • Bronte Capital Management's ten largest holdings make up 76% of its $1.12B portfolio in Q3 2025.
  • Bronte Capital Management opened 4 new positions and closed 1 in Q3 2025.
  • Bronte Capital Management's portfolio value fell 12% quarter-over-quarter to $1.12B.

Based on Bronte Capital Management's 13F filing for Q3 2025, filed 5 Nov 2025.