William Von Mueffling Interactive Brokers Group, Inc. Transaction History

Cantillon Capital Management LLC

$15.3 Billion
Q2 2025

A detailed history of William Von Mueffling (Cantillon Capital Management LLC) transactions in Interactive Brokers Group, Inc. stock. As of the latest transaction made, Cantillon Capital Management LLC holds 12,803,631 shares of IBKR stock, worth $857 Million. This represents 4.63% of its overall portfolio holdings.

Number of Shares

12,803,631

Previous 3,293,826 288.72%

Holding current value

$857 Million

Previous $545 Million 30.07%

% of portfolio

4.63%

Previous 3.92%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Jul 30, 2025	BUY	$50.53 - $212.53 $481 Million - $2.02 Billion	9,509,805 Added 288.72%	12,803,631 $709 Million
Q1 2025 May 09, 2025	SELL	$161.03 - $235.53 $16.4 Million - $24 Million	-101,864 Reduced 3.0%	3,293,826 $545 Million
Q4 2024 Feb 05, 2025	BUY	$138.3 - $192.95 $2.5 Million - $3.48 Million	18,047 Added 0.53%	3,395,690 $600 Million
Q3 2024 Nov 07, 2024	SELL	$108.65 - $139.41 $11 Million - $14.1 Million	-100,932 Reduced 2.9%	3,377,643 $471 Million
Q2 2024 Aug 05, 2024	SELL	$107.39 - $128.6 $19 Million - $22.8 Million	-177,129 Reduced 4.85%	3,478,575 $426 Million
Q1 2024 May 08, 2024	SELL	$84.55 - $111.71 $6.19 Million - $8.17 Million	-73,165 Reduced 1.96%	3,655,704 $408 Million
Q4 2023 Feb 07, 2024	SELL	$76.41 - $89.67 $6.93 Million - $8.14 Million	-90,760 Reduced 2.38%	3,728,869 $309 Million
Q3 2023 Nov 06, 2023	SELL	$81.97 - $94.47 $1.22 Million - $1.4 Million	-14,839 Reduced 0.39%	3,819,629 $331 Million
Q2 2023 Aug 09, 2023	BUY	$71.41 - $84.74 $16.4 Million - $19.5 Million	230,068 Added 6.38%	3,834,468 $319 Million
Q1 2023 May 04, 2023	BUY	$71.38 - $89.23 $27.4 Million - $34.3 Million	384,186 Added 11.93%	3,604,400 $298 Million
Q4 2022 Feb 06, 2023	BUY	$63.7 - $80.67 $47.7 Million - $60.4 Million	749,342 Added 30.33%	3,220,214 $233 Million
Q3 2022 Nov 03, 2022	SELL	$53.39 - $70.24 $1.18 Million - $1.55 Million	-22,039 Reduced 0.88%	2,470,872 $158 Million
Q2 2022 Aug 03, 2022	BUY	$52.62 - $67.23 $14.1 Million - $18 Million	268,408 Added 12.07%	2,492,911 $137 Million
Q1 2022 May 03, 2022	BUY	$57.13 - $79.06 $3.54 Million - $4.9 Million	62,011 Added 2.87%	2,224,503 $147 Million
Q4 2021 Jan 27, 2022	SELL	$63.9 - $81.44 $10.4 Million - $13.3 Million	-163,326 Reduced 7.02%	2,162,492 $172 Million
Q3 2021 Oct 26, 2021	SELL	$59.39 - $66.18 $1.97 Million - $2.2 Million	-33,248 Reduced 1.41%	2,325,818 $145 Million
Q2 2021 Jul 27, 2021	SELL	$63.26 - $77.36 $2.42 Million - $2.96 Million	-38,212 Reduced 1.59%	2,359,066 $155 Million
Q1 2021 May 03, 2021	SELL	$61.19 - $78.88 $4.97 Million - $6.4 Million	-81,143 Reduced 3.27%	2,397,278 $175 Million
Q4 2020 Feb 03, 2021	SELL	$47.57 - $62.31 $476,936 - $624,720	-10,026 Reduced 0.4%	2,478,421 $151 Million
Q3 2020 Oct 30, 2020	SELL	$42.25 - $53.3 $1.08 Million - $1.37 Million	-25,636 Reduced 1.02%	2,488,447 $120 Million
Q2 2020 Jul 31, 2020	BUY	$37.12 - $45.93 $697,596 - $863,162	18,793 Added 0.75%	2,514,083 $105 Million
Q1 2020 Apr 30, 2020	SELL	$35.28 - $57.0 $252,181 - $407,436	-7,148 Reduced 0.29%	2,495,290 $108 Million
Q4 2019 Feb 07, 2020	SELL	$45.0 - $49.39 $2.37 Million - $2.61 Million	-52,771 Reduced 2.07%	2,502,438 $117 Million
Q3 2019 Nov 04, 2019	SELL	$44.59 - $54.89 $820,723 - $1.01 Million	-18,406 Reduced 0.72%	2,555,209 $137 Million
Q2 2019 Jul 26, 2019	SELL	$50.46 - $58.55 $2.27 Million - $2.64 Million	-45,023 Reduced 1.72%	2,573,615 $139 Million
Q1 2019 May 01, 2019	SELL	$49.61 - $57.26 $1.01 Million - $1.16 Million	-20,282 Reduced 0.77%	2,618,638 $136 Million
Q4 2018 Feb 05, 2019	BUY	$47.12 - $58.16 $1.11 Million - $1.37 Million	23,595 Added 0.9%	2,638,920 $144 Million
Q3 2018 Nov 09, 2018	BUY	$55.31 - $65.34 $7.84 Million - $9.26 Million	141,788 Added 5.73%	2,615,325 $145 Million
Q2 2018 Aug 07, 2018	SELL	$64.41 - $79.7 $4.36 Million - $5.4 Million	-67,707 Reduced 2.66%	2,473,537 $159 Million
Q1 2018 May 08, 2018	BUY	$59.14 - $73.76 $29.6 Million - $37 Million	501,191 Added 24.57%	2,541,244 $171 Million
Q4 2017 Feb 12, 2018	SELL	$46.41 - $61.88 $4.91 Million - $6.54 Million	-105,712 Reduced 4.93%	2,040,053 $121 Million
Q3 2017 Nov 13, 2017	BUY	$40.05 - $45.04 $8.81 Million - $9.9 Million	219,874 Added 11.42%	2,145,765 $96.6 Million
Q2 2017 Aug 07, 2017	BUY	N/A	1,925,891	1,925,891 $72.1 Million

Others Institutions Holding IBKR

# of Institutions

914

Shares Held

330M

Call Options Held

7.4M

Put Options Held

7.33M

View Full List

About Interactive Brokers Group, Inc.

Ticker IBKR
Exchange NASDAQ
Sector Financial Services
Industry Capital Markets
Shares Outstandng 90,820,000
Market Cap $6.08B
Description
Interactive Brokers Group, Inc. operates as an automated electronic broker worldwide. The company specializes in executing, clearing, and settling trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds, exchange traded funds (ETFs), metals, and cryptocurrencies. It also custodies and services accounts for hedge and...

More about IBKR

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