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
01 May 26	Buy€1,692	Lori Conkling	Individual	25	€67.69
28 Apr 26	Sell€1,708,154	Lawrence Harris	Individual	26,000	€65.70
01 Apr 26	Buy€1,472	Lori Conkling	Individual	25	€58.89
27 Jan 26	Sell€9,820,888	Earl Nemser	Individual	155,000	€65.14
23 Jan 26	Sell€16,133,714	Earl Nemser	Individual	245,000	€66.46
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

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	35,944	0.00807%
State or Government	803,812	0.18%
Individual Insiders	11,678,500	2.62%
General Public	36,361,847	8.16%
Institutions	396,604,661	89%

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

Top Shareholders

Top 25 shareholders own 52.83% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
7.04%	BlackRock, Inc.	31,352,228	€8.5b	-0.96%	0.03%
6.33%	Vanguard Capital Management, LLC	28,180,361	€7.6b	0%	0.04%
4.29%	State Street Global Advisors, Inc.	19,092,105	€5.2b	1.36%	0.04%
3.36%	Vanguard Portfolio Management, LLC	14,984,545	€4.1b	0%	0.06%
2.52%	Cantillon Capital Management LLC	11,245,881	€3.1b	-11.9%	5.15%
2.34%	Geode Capital Management, LLC	10,443,607	€2.8b	2.35%	0.04%
2.25%	Kayne Anderson Rudnick Investment Management, LLC	10,016,215	€2.7b	-10.6%	2.26%
2.23%	Greenwich Wealth Management, LLC	9,924,043	€2.7b	8.04%	28.88%
2.19%	Wellington Management Group LLP	9,774,792	€2.7b	18%	0.12%
2.11%	FMR LLC	9,403,491	€2.6b	98.5%	0.03%
1.87%	Two Sigma Investments, LP	8,312,971	€2.3b	136%	0.54%
1.58%	Norges Bank Investment Management	7,046,279	€1.9b	0%	0.03%
1.41%	Egerton Capital (UK) LLP	6,275,179	€1.7b	-9.57%	5.22%
1.37%	Orbis Investment Management Limited	6,118,045	€1.7b	-34%	1.16%
1.36%	Thomas Peterffy	6,064,728	€1.6b	0%	no data
1.33%	W1M Asset Management Limited	5,915,803	€1.6b	0.93%	4.55%
1.32%	Invesco Ltd.	5,887,020	€1.6b	40.1%	0.11%
1.29%	American Century Investment Management Inc	5,744,408	€1.6b	-0.32%	0.17%
1.14%	JP Morgan Asset Management	5,056,948	€1.4b	-7.63%	0.03%
1%	1832 Asset Management L.P.	4,454,154	€1.2b	-11.4%	0.34%
0.99%	UBS Asset Management AG	4,389,004	€1.2b	-0.51%	0.02%
0.91%	Baron Capital Group, Inc.	4,047,376	€1.1b	-12.8%	0.84%
0.88%	Jacobs Levy Equity Management Inc	3,931,016	€1.1b	-18.3%	1.18%
0.88%	Bessemer Investment Management LLC	3,922,736	€1.1b	156%	0.39%
0.84%	Invesco Capital Management LLC	3,760,148	€1.0b	-8.01%	0.07%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/05/29 17:05
End of Day Share Price	2026/05/29 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

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 24 analysts. 9 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