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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
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 $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
CCM
Cantillon Capital Management New York $665M AUM 25.91% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
GWM
Greenwich Wealth Management Greenwich, Connecticut $2.45B AUM 39.53% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Bronte Capital Management's IBKR Position: Q1 2026 in Review

Bronte Capital Management reduced its Interactive Brokers (IBKR) stake by 14% in Q1 2026, selling an estimated $14.6M and leaving 1,281,731 shares worth $86M. The position accounts for 8.51% of the portfolio, ranked #3.

Bronte Capital Management first reported a position in IBKR in Q4 2018 and has held it in 30 quarters since. The position peaked at $150M in Q2 2025. 994 funds tracked by Wall St. Rank hold IBKR as of Q1 2026.

  • Bronte Capital Management held 1,281,731 shares of Interactive Brokers worth $86M as of Q1 2026.
  • Bronte Capital Management sold 204,563 Interactive Brokers shares in Q1 2026, an estimated $14.6M.
  • Interactive Brokers made up 8.51% of Bronte Capital Management's portfolio in Q1 2026, its #3 holding.
  • Bronte Capital Management first reported a position in Interactive Brokers in Q4 2018 and has held it in 30 quarters since.
  • Bronte Capital Management's Interactive Brokers position peaked at $150M in Q2 2025.
  • 994 funds tracked by Wall St. Rank held Interactive Brokers as of Q1 2026.

Based on Bronte Capital Management's 13F filing for Q1 2026, filed 27 Apr 2026.