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Bronte Capital Management’s Interactive Brokers IBKR Stock Holding History

Bronte Capital Management’s Portfolio IBKR Stock Details IBKR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$76.9M Sell
883,526
-398,205
-31% -$33.1M 8.26% 3
2026
Q1 		$86M Sell
1,281,731
-204,563
-14% -$14.6M 8.51% 3
2025
Q4 		$95.6M Sell
1,486,294
-274,877
-16% -$18.4M 9.53% 3
2025
Q3 		$135M Sell
1,761,171
-643,478
-27% -$40.5M 12.13% 1
2025
Q2 		$150M Buy
2,404,649
+298,313
+14% +$14.2M 11.79% 1
2025
Q1 		$102M Sell
2,106,336
-273,840
-12% -$13.6M 8.29% 4
2024
Q4 		$123M Sell
2,380,176
-954,332
-29% -$40.2M 9.73% 3
2024
Q3 		$116M Buy
3,334,508
+95,312
+3% +$2.95M 9.44% 4
2024
Q2 		$99.3M Sell
3,239,196
-130,504
-4% -$3.89M 7.77% 4
2024
Q1 		$94.1M Buy
3,369,700
+24,924
+0.7% +$621K 7.68% 4
2023
Q4 		$69.3M Sell
3,344,776
-20,136
-0.6% -$412K 6.19% 5
2023
Q3 		$72.8M Buy
3,364,912
+19,108
+0.6% +$425K 7.33% 4
2023
Q2 		$69.5M Buy
3,345,804
+47,116
+1% +$930K 6.7% 4
2023
Q1 		$68.1M Sell
3,298,688
-42,200
-1% -$859K 7.9% 4
2022
Q4 		$60.4M Sell
3,340,888
-104,192
-3% -$1.95M 7.62% 4
2022
Q3 		$55M Sell
3,445,080
-108,232
-3% -$1.67M 6.86% 5
2022
Q2 		$48.9M Buy
3,553,312
+415,488
+13% +$6.17M 5.6% 6
2022
Q1 		$51.7M Sell
3,137,824
-289,316
-8% -$4.98M 4.34% 6
2021
Q4 		$68M Sell
3,427,140
-47,760
-1% -$889K 4.49% 8
2021
Q3 		$54.2M Buy
3,474,900
+66,252
+2% +$1.04M 3.96% 8
2021
Q2 		$56M Sell
3,408,648
-7,156
-0.2% -$124K 3.99% 8
2021
Q1 		$62.4M Sell
3,415,804
-1,741,160
-34% -$31.4M 7.07% 5
2020
Q4 		$78.5M Sell
5,156,964
-64,220
-1% -$851K 12.41% 3
2020
Q3 		$62.1M Buy
5,221,184
+257,452
+5% +$3.21M 10.93% 5
2020
Q2 		$51.8M Buy
4,963,732
+250,576
+5% +$2.62M 9.09% 6
2020
Q1 		$50.9M Buy
4,713,156
+1,761,196
+60% +$21.3M 8.33% 6
2019
Q4 		$34.4M Buy
2,951,960
+86,740
+3% +$1.02M 6.67% 6
2019
Q3 		$38.5M Buy
2,865,220
+780,164
+37% +$9.7M 10.65% 5
2019
Q2 		$28.3M Buy
2,085,056
+284,040
+16% +$3.85M 10.07% 5
2019
Q1 		$23.4M Buy
1,801,016
+14,376
+0.8% +$189K 8.77% 5
2018
Q4 		$24.4M Buy
+1,786,640
New +$23.8M 9.74% 5

Other funds holding IBKR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
GWM
Greenwich Wealth Management Greenwich, Connecticut $2.74B AUM 36.19% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Bronte Capital Management's IBKR Position: Q2 2026 in Review

Bronte Capital Management reduced its Interactive Brokers (IBKR) stake by 31% in Q2 2026, selling an estimated $33.1M and leaving 883,526 shares worth $76.9M. The position accounts for 8.26% of the portfolio, ranked #3.

Bronte Capital Management first reported a position in IBKR in Q4 2018 and has held it in 31 quarters since. The position peaked at $150M in Q2 2025. 1,117 funds tracked by Wall St. Rank hold IBKR as of Q2 2026.

  • Bronte Capital Management held 883,526 shares of Interactive Brokers worth $76.9M as of Q2 2026.
  • Bronte Capital Management sold 398,205 Interactive Brokers shares in Q2 2026, an estimated $33.1M.
  • Interactive Brokers made up 8.26% of Bronte Capital Management's portfolio in Q2 2026, its #3 holding.
  • Bronte Capital Management first reported a position in Interactive Brokers in Q4 2018 and has held it in 31 quarters since.
  • Bronte Capital Management's Interactive Brokers position peaked at $150M in Q2 2025.
  • 1,117 funds tracked by Wall St. Rank held Interactive Brokers as of Q2 2026.

Based on Bronte Capital Management's 13F filing for Q2 2026, filed 5 Aug 2026.