Bronte Capital Management Pty Ltd.

Position in IBKR — Interactive Brokers Group, Inc.

CIK 1471085 Bondi Junction, C3

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Position in IBKR

as of Jun 30, 2026 · filed Aug 5, 2026 Compact

Position Value

$76,902,103

-$9,063,595 QoQ

Shares Held

883,526

-31.1% QoQ

Ownership

0.195%

of shares outstanding

% of Portfolio

9.88%

of 13F equity value

Holder Rank

#80

of 1,105 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in IBKR Over Time

Shares Held

Position Value (USD)

Position in Capital Markets

Financial Services · as of Jun 30, 2026

Bronte Capital Management Pty Ltd. holds $76,902,103 across 1 Capital Markets name. IBKR ranks #1 (100.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)	Open
1	IBKR	Interactive Brokers Group, Inc. This page	883,526	$76,902,103

All Filings in IBKR

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$76,902,103	883,526	-31.1%	Shares	Sole	2026-08-05
2026-03-31	$85,965,698	1,281,731	-13.8%	Shares	Sole	2026-04-27
2025-12-31	$95,583,567	1,486,294	-15.6%	Shares	Sole	2026-02-03
2025-09-30	$121,186,176	1,761,171	-26.8%	Shares	Sole	2025-11-05
2025-06-30	$133,241,601	2,404,649	+356.7%	Shares	Sole	2025-08-12
2025-03-31	$87,197,044	526,584	-11.5%	Shares	Sole	2025-05-14
2024-12-31	$105,126,423	595,044	-28.6%	Shares	Sole	2025-02-10
2024-09-30	$116,174,258	833,627	+2.9%	Shares	Sole	2024-11-05
2024-06-30	$99,281,357	809,799	-3.9%	Shares	Sole	2024-08-07
2024-03-31	$94,107,296	842,425	+0.7%	Shares	Sole	2024-05-13
2023-12-31	$69,320,482	836,194	-0.6%	Shares	Sole	2024-02-07
2023-09-30	$72,816,695	841,228	+0.6%	Shares	Sole	2023-11-06
2023-06-30	$69,483,984	836,451	+1.4%	Shares	Sole	2023-08-08
2023-03-31	$68,084,920	824,672	-1.3%	Shares	Sole	2023-05-12
2022-12-31	$60,428,311	835,222	-3.0%	Shares	Sole	2023-02-14
2022-09-30	$55,043,765	861,270	-3.0%	Shares	Sole	2022-11-03
2022-06-30	$48,866,923	888,328	+13.2%	Shares	Sole	2022-08-08
2022-03-31	$51,703,494	784,456	-8.4%	Shares	Sole	2022-05-13
2021-12-31	$68,045,864	856,785	-1.4%	Shares	Sole	2022-02-10
2021-09-30	$54,156,316	868,725	+1.9%	Shares	Sole	2021-11-09
2021-06-30	$56,012,608	852,162	-0.2%	Shares	Sole	2021-08-09
2021-03-31	$62,372,581	853,951	-33.8%	Shares	Sole	2021-04-13
2020-12-31	$78,540,561	1,289,241	-1.2%	Shares	Sole	2021-02-03
2020-09-30	$63,084,955	1,305,296	+5.2%	Shares	Sole	2020-12-16
2020-06-30	$51,833,771	1,240,933	+5.3%	Shares	Sole	2020-08-11
2020-03-31	$50,866,736	1,178,289	—	Shares	Sole	2020-05-08
No filing history on record for this holder in this stock.