IBKR

Interactive Brokers Group, Inc.

Security Brokers, Dealers & Flotation CompaniesNasdaqLarge accelerated filer

Total Trades

180

Buys

1

Sells

179

Largest Trade

$1M+

Insiders

7

Institutional Funds

832

Inst. Value

$1M+

Activist Filings

18

Insider Trades

InsiderTitleTypeValueSharesPriceDate
Nemser Earl HVice ChairmanSELL$1M+155K$75.84Jan 28, 2026
Nemser Earl HVice ChairmanSELL$1M+245K$77.43Jan 26, 2026
Harris Lawrence EDirectorSELL$500K+11K$69.00Oct 31, 2025
Harris Lawrence EDirectorSELL$500K+14K$69.45Oct 29, 2025
Bright JillDirectorBUY$15K–$50K400$65.95Oct 27, 2025
Harris Lawrence EDirectorSELL$1M+30K$67.86Oct 27, 2025
Brody Paul JonathanCFOSELL$1M+21K$68.11Oct 1, 2025
Brody Paul JonathanCFOSELL$1M+31K$65.34Sep 29, 2025
Brody Paul JonathanCFOSELL$1M+33K$65.09Sep 25, 2025
Brody Paul JonathanCFOSELL$1M+66K$64.46Sep 23, 2025
Brody Paul JonathanCFOSELL$1M+223K$63.54Sep 19, 2025
Brody Paul JonathanCFOSELL$1M+195K$62.68Sep 17, 2025
Brody Paul JonathanCFOSELL$1M+210K$63.62Sep 15, 2025
Brody Paul JonathanCFOSELL$1M+212K$62.19Sep 11, 2025
Nemser Earl HVice ChairmanSELL$1M+40K$66.38Aug 1, 2025
Nemser Earl HVice ChairmanSELL$1K–$15K100$65.90Jul 30, 2025
Nemser Earl HVice ChairmanSELL$1M+10K$105.94Feb 23, 2024
Nemser Earl HVice ChairmanSELL$1M+15K$104.23Feb 20, 2024
Nemser Earl HVice ChairmanSELL$1M+75K$101.29Feb 15, 2024
Frank Thomas AJChief Information …SELL$1M+40K$95.52Feb 7, 2024
Nemser Earl HVice ChairmanSELL$1M+100K$96.14Feb 6, 2024
Frank Thomas AJChief Information …SELL$1M+84K$93.77Feb 5, 2024
Frank Thomas AJChief Information …SELL$500K+9K$90.18Feb 1, 2024
Frank Thomas AJChief Information …SELL$1M+96K$90.95Jan 30, 2024
Frank Thomas AJChief Information …SELL$1M+93K$91.19Jan 26, 2024
Frank Thomas AJChief Information …SELL$1M+97K$91.09Jan 24, 2024
Frank Thomas AJChief Information …SELL$1M+15K$88.73Jan 22, 2024
Frank Thomas AJChief Information …SELL$1M+28K$88.53Jan 18, 2024
Frank Thomas AJChief Information …SELL$1M+26K$88.01Jan 16, 2024
Brody Paul JonathanCFOSELL$100K–$500K2K$80.89Nov 9, 2023
Brody Paul JonathanCFOSELL$500K+10K$80.19Nov 7, 2023
Brody Paul JonathanCFOSELL$1M+22K$80.04Nov 3, 2023
Brody Paul JonathanCFOSELL$1M+25K$80.01Nov 1, 2023
Brody Paul JonathanCFOSELL$1M+17K$80.18Oct 30, 2023
Brody Paul JonathanCFOSELL$1M+21K$80.25Oct 26, 2023
Brody Paul JonathanCFOSELL$1M+26K$80.51Oct 24, 2023
Brody Paul JonathanCFOSELL$1M+26K$82.19Oct 20, 2023
Brody Paul JonathanCFOSELL$1M+26K$86.43Oct 18, 2023
Frank Thomas AJChief Information …SELL$1M+26K$86.42Oct 18, 2023
Frank Thomas AJChief Information …SELL$1M+26K$85.71Oct 16, 2023
Brody Paul JonathanCFOSELL$1M+26K$85.70Oct 16, 2023
Brody Paul JonathanCFOSELL$1M+26K$88.03Oct 12, 2023
Frank Thomas AJChief Information …SELL$1M+26K$88.04Oct 12, 2023
Frank Thomas AJChief Information …SELL$1M+28K$89.18Oct 10, 2023
Brody Paul JonathanCFOSELL$1M+26K$89.10Oct 10, 2023
Brody Paul JonathanCFOSELL$1M+26K$86.78Oct 6, 2023
Frank Thomas AJChief Information …SELL$1M+26K$86.80Oct 6, 2023
Brody Paul JonathanCFOSELL$1M+26K$86.60Oct 4, 2023
Frank Thomas AJChief Information …SELL$1M+26K$86.58Oct 4, 2023
Frank Thomas AJChief Information …SELL$1M+26K$87.40Oct 2, 2023
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Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

Bares Capital Management, Inc.

SC 13G/A · Nov 7, 2025

0.0%

0 shares

BlackRock, Inc.

SC 13G/A · Oct 17, 2025

6.2%

27.6M shares

The Vanguard Group

SC 13G/A · Sep 8, 2025

11.4%

50.8M shares

ORBIS INVESTMENT MANAGEMENT LTD

SC 13G/A · Feb 14, 2025

4.8%

5.3M shares

BlackRock, Inc.

SC 13G/A · Feb 5, 2025

9.5%

10.3M shares

The Vanguard Group - 23-1945930

SC 13G/A · Feb 13, 2024

9.1%

9.7M shares

BlackRock, Inc.

SC 13G/A · Jan 25, 2024

8.4%

9.0M shares

Select Equity Group, L.P.

SC 13G/A · Feb 14, 2023

3.1%

3.2M shares

BlackRock, Inc.

SC 13G/A · Jan 25, 2023

8.7%

8.9M shares

75.5%

316.6M shares

5.3%

5.2M shares

Select Equity Group, L.P.

SC 13G · Feb 12, 2022

5.8%

5.7M shares

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