Interactive Brokers Group Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

BIT:1IBKR Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
29 Oct 25	Sell€629,911	Lawrence Harris	Individual	10,645	€59.17
28 Oct 25	Sell€855,026	Lawrence Harris	Individual	14,355	€59.80
24 Oct 25	Sell€1,750,229	Lawrence Harris	Individual	30,000	€58.89
23 Oct 25	Buy€22,726	Jill Bright	Individual	400	€56.82
30 Sep 25	Sell€1,240,089	Paul Brody	Individual	21,361	€59.66
26 Sep 25	Sell€1,751,923	Paul Brody	Individual	31,354	€56.57
24 Sep 25	Sell€1,851,976	Paul Brody	Individual	33,416	€55.81
22 Sep 25	Sell€3,982,193	Paul Brody	Individual	72,683	€54.94
18 Sep 25	Sell€12,042,012	Paul Brody	Individual	223,382	€55.19
16 Sep 25	Sell€10,344,572	Paul Brody	Individual	195,482	€54.25
12 Sep 25	Sell€11,387,826	Paul Brody	Individual	209,783	€54.77
10 Sep 25	Sell€11,269,205	Paul Brody	Individual	212,399	€53.33
14 Aug 25	Sell€2,960,656	Earl Nemser	Individual	53,900	€55.12
13 Aug 25	Sell€11,602,628	Earl Nemser	Individual	201,686	€57.94
11 Aug 25	Sell€1,459,120	Earl Nemser	Individual	25,682	€57.00
07 Aug 25	Sell€1,406,969	Earl Nemser	Individual	25,682	€55.33
05 Aug 25	Sell€1,423,481	Earl Nemser	Individual	25,682	€56.00
01 Aug 25	Sell€1,553,753	Earl Nemser	Individual	27,482	€57.78
30 Jul 25	Sell€2,300,026	Earl Nemser	Individual	39,786	€58.04
28 Jul 25	Sell€5,671	Earl Nemser	Individual	100	€56.71
31 Jan 25	Buy€28,511	Jill Bright	Individual	540	€52.80

Insider Trading Volume

Insider Buying: 1IBKR insiders have sold more shares than they have bought in the past 3 months.

Ownership Breakdown

What is the ownership structure of 1IBKR?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	49,644	0.0111%
State or Government	941,005	0.211%
Individual Insiders	12,942,508	2.91%
General Public	49,851,129	11.2%
Institutions	381,579,831	85.7%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 53.72% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
11.9%	The Vanguard Group, Inc.	52,859,085	€12.3b	26.4%	0.05%
6.2%	BlackRock, Inc.	27,591,562	€6.4b	-31.4%	0.03%
3.4%	State Street Global Advisors, Inc.	15,131,029	€3.5b	0.32%	0.03%
2.84%	Cantillon Capital Management LLC	12,664,026	€2.9b	-1.09%	4.74%
2.8%	Kayne Anderson Rudnick Investment Management, LLC	12,490,101	€2.9b	-1.52%	2.07%
2.44%	Greenwich Wealth Management, LLC	10,864,532	€2.5b	0.4%	31.99%
2.19%	Orbis Investment Management Limited	9,740,072	€2.3b	-30.3%	1.79%
2.08%	Wellington Management Group LLP	9,270,551	€2.2b	136%	0.1%
1.81%	Egerton Capital (UK) LLP	8,056,844	€1.9b	9.83%	5.42%
1.58%	JP Morgan Asset Management	7,046,419	€1.6b	-6.13%	0.04%
1.5%	Geode Capital Management, LLC	6,682,629	€1.6b	-27.3%	0.03%
1.49%	FMR LLC	6,625,388	€1.5b	33.2%	0.02%
1.36%	Thomas Peterffy	6,064,728	€1.4b	0%	no data
1.26%	American Century Investment Management Inc	5,602,511	€1.3b	-2.33%	0.16%
1.22%	Marshall Wace LLP	5,415,370	€1.3b	13.3%	0.48%
1.21%	Jacobs Levy Equity Management Inc	5,396,930	€1.3b	9.68%	1.4%
1.15%	Norges Bank Investment Management	5,138,107	€1.2b	-1.04%	0.02%
1.09%	Neuberger Berman Investment Advisers LLC	4,875,777	€1.1b	-0.11%	0.24%
1%	W1M Investment Management Limited	4,441,243	€1.0b	462%	2.71%
0.94%	Baron Capital Group, Inc.	4,198,424	€977.7m	14.8%	0.71%
0.93%	Invesco Capital Management LLC	4,144,912	€965.2m	5.9%	0.09%
0.9%	UBS Asset Management AG	4,019,802	€936.1m	27%	0.02%
0.84%	Jarislowsky, Fraser Limited	3,724,608	€867.3m	-11.7%	1.3%
0.83%	Northern Trust Global Investments	3,687,831	€858.8m	-3.23%	0.03%
0.79%	Merrill Lynch, Pierce, Fenner & Smith Incorporated	3,524,414	€820.7m	-7.42%	0.08%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/11/12 20:27
End of Day Share Price	2025/11/12 00:00
Earnings	2025/09/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Interactive Brokers Group, Inc. is covered by 25 analysts. 10 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Benjamin Budish	Barclays
Brennan Hawken	BMO Capital Markets Equity Research
Craig Siegenthaler	BofA Global Research