Bronte Capital Management Pty Ltd.

Position in IBKR — Interactive Brokers Group, Inc.

CIK 1471085 Bondi Junction, C3

Position in IBKR

as of Mar 31, 2026 · filed Apr 27, 2026 Compact

Position Value

$85,965,698

-$9,617,869 QoQ

Shares Held

1,281,731

-13.8% QoQ

Ownership

0.288%

of shares outstanding

% of Portfolio

10.78%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Financial Services · as of Mar 31, 2026

Bronte Capital Management Pty Ltd. holds $85,965,698 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	1,281,731	$85,965,698

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
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	$21,799,261	526,584	-11.5%	Shares	Sole	2025-05-14
2024-12-31	$26,281,605	595,044	-28.6%	Shares	Sole	2025-02-10
2024-09-30	$29,043,564	833,627	+2.9%	Shares	Sole	2024-11-05
2024-06-30	$24,820,339	809,799	-3.9%	Shares	Sole	2024-08-07
2024-03-31	$23,526,824	842,425	+0.7%	Shares	Sole	2024-05-13
2023-12-31	$17,330,120	836,194	-0.6%	Shares	Sole	2024-02-07
2023-09-30	$18,204,173	841,228	+0.6%	Shares	Sole	2023-11-06
2023-06-30	$17,370,996	836,451	+1.4%	Shares	Sole	2023-08-08
2023-03-31	$17,021,230	824,672	-1.3%	Shares	Sole	2023-05-12
2022-12-31	$15,107,077	835,222	-3.0%	Shares	Sole	2023-02-14
2022-09-30	$13,760,941	861,270	-3.0%	Shares	Sole	2022-11-03
2022-06-30	$12,216,730	888,328	+13.2%	Shares	Sole	2022-08-08
2022-03-31	$12,925,873	784,456	-8.4%	Shares	Sole	2022-05-13
2021-12-31	$17,011,466	856,785	-1.4%	Shares	Sole	2022-02-10
2021-09-30	$13,539,079	868,725	+1.9%	Shares	Sole	2021-11-09
2021-06-30	$14,003,152	852,162	-0.2%	Shares	Sole	2021-08-09
2021-03-31	$15,593,145	853,951	-33.8%	Shares	Sole	2021-04-13
2020-12-31	$19,635,140	1,289,241	-1.2%	Shares	Sole	2021-02-03
2020-09-30	$15,771,238	1,305,296	+5.2%	Shares	Sole	2020-12-16
2020-06-30	$12,958,442	1,240,933	+5.3%	Shares	Sole	2020-08-11
2020-03-31	$12,716,684	1,178,289	—	Shares	Sole	2020-05-08
No filing history on record for this holder in this stock.