Interactive Brokers Group, Inc. (IBKR)
Nasdaq: IBKR · Security Brokers, Dealers & Flotation Companies · Greenwich, CT · filing with the SEC since 2006
Grade6.0
◀ Past 4.3● Present 6.8▶ Future 6.2
Who owns Interactive Brokers Group, Inc.
As filed with the SECHolders of 5% or more
2
Vanguard Capital Management holds 7.3% of Common Stock, as its SCHEDULE 13G filed Apr 30, 2026 says.
Directors and officers
11
report now, of 17 people on the record since 2007. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 17, 2025 · Class A Stock · 9.5% in Feb 5, 2025
Orbis Investment Management Ltd
SCHEDULE 13G/A · filed Feb 14, 2025 · Common Stock · reported falling below 5%
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%, from 11.4% in Sep 8, 2025
Bares Capital Management, Inc.
SCHEDULE 13G/A · filed Nov 7, 2025 · Common Stock · reported falling below 5%
What IBKR reports owning in othersstakes of 5% or more, and other ties
34 subsidiaries in 15 countries, from the list filed with the 10-K filed Feb 27, 2026.
Insider tradesForm 4
10sales
10purchases
0sales on a scheduled plan
2people selling
$34.8Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 3, 2025 to Nov 3, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 3, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window3 of 17 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Nemser Earl H | Vice Chairman | 8 | $30.7M | 0 | 0 | $0 |
| Harris Lawrence E | director | 2 | $4.1M | 0 | 0 | $0 |
| Conkling Lori A | director | 0 | $0 | 0 | 10 | $0 |