Ticker · CUSIP 45841N107

IBKR

INTERACTIVE BROKERS GROUP IN

Financial Services·Capital Markets

···Share

Holders (tracked)

Combined shares

32,049,626

Combined value

$2.06B

Last close

$81.71

Quarter

2025Q4

Price is +27.1% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$81.71+42.03 (+105.94%)H $81.71 · L $38.18 · Avg Vol 5.3M

Congress buyCongress sell

Tracked holders · last 8 quarters

+5 vs previous quarter over the last 8.

SEC event timeline

30 events

Ken Griffin (Citadel Advisors) trimmed2026-02-17
−126,292 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−165,811 shares · 2025Q4
Position
Two Sigma Investments trimmed2026-02-17
−48,632 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+93,105 shares · 2025Q4
Position
Steve Cohen (Point72) added2026-02-17
+492,900 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+77,027 shares · 2025Q4
Position
Wellington Management trimmed2026-02-17
−2,616,953 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+551,744 shares · 2025Q4
Position
Ron Baron (Baron Capital / BAMCO) added2026-02-17
+33,608 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+20,051 shares · 2025Q4
Position
George Soros (Soros Fund Mgmt) trimmed2026-02-13
−812,577 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) trimmed2026-02-13
−93,830 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−347,245 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+7,046,279 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) added2026-02-09
+1,496 shares · 2025Q4
Position
Mario Gabelli (GAMCO) trimmed2026-02-05
−100 shares · 2025Q4
Position
Ron Baron (Baron Capital / BAMCO) added2025-11-14
+411,344 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+31,389 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−675,639 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+552,725 shares · 2025Q3
Position
D.E. Shaw & Co. added2025-11-14
+140,892 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+578,611 shares · 2025Q3
Position
Wellington Management added2025-11-14
+1,630,620 shares · 2025Q3
Position
George Soros (Soros Fund Mgmt) trimmed2025-11-14
−649,670 shares · 2025Q3
Position
Renaissance Technologies trimmed2025-11-13
−1,015,300 shares · 2025Q3
Position
Ray Dalio (Bridgewater Associates) opened position2025-11-13
+582,770 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−5,138,107 shares · 2025Q3
Position
Mario Gabelli (GAMCO) trimmed2025-11-12
−5,655 shares · 2025Q3
Position
Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12
−1,366 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−367,923 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for IBKR →

Follow-the-investor returns

If you'd copied each holder of IBKR…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
George Soros (Soros Fund Mgmt)	2022Q1	$59.43	+37.5%	$63.0M
Steve Cohen (Point72)	2017Q3	$63.10	+29.5%	$19.6M
Steve Cohen (Point72)	2017Q3	$63.10	+29.5%	$19.6M
Ron Baron (Baron Capital / BAMCO)	2018Q4	$63.76	+28.2%	$379.4M
Two Sigma Investments	2022Q3	$64.40	+26.9%	$1.3M
Two Sigma Investments	2022Q3	$64.40	+26.9%	$1.3M
Two Sigma Investments	2022Q3	$64.40	+26.9%	$1.3M
Mario Gabelli (GAMCO)	2017Q1	$64.60	+26.5%	$1.4M
D.E. Shaw & Co.	2016Q1	$64.61	+26.5%	$3.4M
D.E. Shaw & Co.	2016Q1	$64.61	+26.5%	$3.4M
Izzy Englander (Millennium Mgmt)	2016Q4	$64.66	+26.4%	$27.4M
Izzy Englander (Millennium Mgmt)	2016Q4	$64.66	+26.4%	$27.4M
Izzy Englander (Millennium Mgmt)	2016Q4	$64.66	+26.4%	$27.4M
Paul Tudor Jones (Tudor Investment)	2020Q1	$65.47	+24.8%	$3.2M
Paul Tudor Jones (Tudor Investment)	2020Q1	$65.47	+24.8%	$3.2M
Paul Tudor Jones (Tudor Investment)	2020Q1	$65.47	+24.8%	$3.2M
Wellington Management	2017Q3	$67.24	+21.5%	$676.9M
T. Rowe Price	2016Q1	$67.58	+20.9%	$84.1M
Ray Dalio (Bridgewater Associates)	2022Q1	$73.07	+11.8%	$40.0M
AQR Capital Management	2016Q1	$75.96	+7.6%	$7.8M
Ken Fisher (Fisher Asset Mgmt)	2024Q4	$79.47	+2.8%	$757K
Ken Griffin (Citadel Advisors)	2016Q1	$82.13	-0.5%	$79.8M
Ken Griffin (Citadel Advisors)	2016Q1	$82.13	-0.5%	$79.8M
Ken Griffin (Citadel Advisors)	2016Q1	$82.13	-0.5%	$79.8M
Renaissance Technologies	2016Q2	$87.38	-6.5%	$50.4M
Norges Bank (Norway SWF)	2016Q1	$824.32	-90.1%	$575.8M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions2

Norges Bank (Norway SWF)
+7,046,279
$453.1M
Paul Tudor Jones (Tudor Investment)
+551,744
$35.5M

Added to6

Steve Cohen (Point72)
+492,900
$31.7M
Izzy Englander (Millennium Mgmt)
+93,105
$6.0M
Ron Baron (Baron Capital / BAMCO)
+33,608
$2.2M
AQR Capital Management
+20,051
$1.3M
Ken Fisher (Fisher Asset Mgmt)
+1,496
$96K
T. Rowe Price
+77,027
$5K

Trimmed8

Wellington Management
−2,616,953
$168.3M
George Soros (Soros Fund Mgmt)
−812,577
$52.3M
Renaissance Technologies
−347,245
$22.3M
D.E. Shaw & Co.
−165,811
$10.7M
Ken Griffin (Citadel Advisors)
−126,292
$8.1M
Ray Dalio (Bridgewater Associates)
−93,830
$6.0M
Two Sigma Investments
−48,632
$3.1M
Mario Gabelli (GAMCO)
−100
$6K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	13	12,331,257	$50.70B	—
2022Q2	16	13,489,586	$51.11B	+3
2022Q3	17	14,699,928	$939.5M	+1
2022Q4	17	14,212,898	$1.03B	—
2023Q1	20	12,967,720	$1.07B	+3
2023Q2	16	11,636,784	$966.7M	-4
2023Q3	15	12,266,601	$1.06B	-1
2023Q4	13	13,151,521	$1.09B	-2
2024Q1	12	12,678,902	$1.42B	-1
2024Q2	16	14,117,178	$1.73B	+4
2024Q3	16	4,379,681	$610.4M	—
2024Q4	19	5,323,464	$940.5M	+3
2025Q1	21	5,762,253	$954.2M	+2
2025Q2	23	31,934,615	$1.77B	+2
2025Q3	21	27,932,556	$1.92B	-2
2025Q4	26	32,049,626	$2.06B	+5

Congress members trading this stock

Date	Member	Type	Amount range	Filing
2025-10-14	Lisa McClain	Sell	$1K – $15K	PDF ↗
2025-08-13	Lisa McClain	Buy	$1K – $15K	PDF ↗
2025-06-24	Lisa McClain	Sell	$1K – $15K	PDF ↗
2025-06-17	Lisa McClain	Buy	$1K – $15K	PDF ↗

Who owns IBKR

26 super-investors · 2025Q4

Tracked stake

32.05M

Combined value

$2.06B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New4Added9Trim13

#	Manager	Shares	Value	% of book	Last action
1	Wellington Management	8.28M	$533M	0.1%	Trim−2.62M
2	Norges Bank Norway SWF	7.05M	$453M	0.0%	New+7.05M
3	Ron Baron Baron Capital / BAMCO	4.64M	$299M	0.8%	Added+33.6K
4	Two Sigma Investments	3.53M	$227M	0.3%	Trim−48.6K
5	Ken Griffin Citadel Advisors	1.26M	$81M	0.0%	Trim−126.3K
6	T. Rowe Price	1.03M	$66M	0.0%	Added+77.0K
7	Ken Griffin Citadel Advisors	977.2K	$63M	0.0%	Trim−126.3K
8	Izzy Englander Millennium Mgmt	868.5K	$56M	0.0%	Added+93.1K
9	George Soros Soros Fund Mgmt	771.5K	$50M	0.6%	Trim−812.6K
10	Ken Griffin Citadel Advisors	650.5K	$42M	0.0%	Trim−126.3K
11	Renaissance Technologies	616.4K	$40M	0.1%	Trim−347.2K
12	Paul Tudor Jones Tudor Investment	551.7K	$35M	0.1%	New+551.7K
13	Ray Dalio Bridgewater Associates	488.9K	$31M	0.1%	Trim−93.8K
14	Steve Cohen Point72	393.1K	$25M	0.0%	Added+492.9K
15	Izzy Englander Millennium Mgmt	335.3K	$22M	0.0%	Added+93.1K
16	Steve Cohen Point72	239.5K	$15M	0.0%	Added+492.9K
17	AQR Capital Management	95.2K	$6M	0.0%	Added+20.1K
18	Izzy Englander Millennium Mgmt	72.5K	$5M	0.0%	Added+93.1K
19	D.E. Shaw & Co.	41.9K	$3M	0.0%	Trim−165.8K
20	Paul Tudor Jones Tudor Investment	38.8K	$2M	0.0%	New+551.7K
21	Paul Tudor Jones Tudor Investment	29.2K	$2M	0.0%	New+551.7K
22	D.E. Shaw & Co.	24.7K	$2M	0.0%	Trim−165.8K
23	Two Sigma Investments	22.9K	$1M	0.0%	Trim−48.6K
24	Mario Gabelli GAMCO	17.3K	$1M	0.0%	Trim−100
25	Two Sigma Investments	16.0K	$1M	0.0%	Trim−48.6K
26	Ken Fisher Fisher Asset Mgmt	9.3K	$596K	0.0%	Added+1.5K

Recent moves

20 transactions

TRIMTwo Sigma Investments
−48,632 · 2025Q4
ADDSteve Cohen (Point72)
+492,900 · 2025Q4
ADDT. Rowe Price
+77,027 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+93,105 · 2025Q4
ADDRon Baron (Baron Capital / BAMCO)
+33,608 · 2025Q4
ADDAQR Capital Management
+20,051 · 2025Q4
TRIMD.E. Shaw & Co.
−165,811 · 2025Q4
TRIMWellington Management
−2,616,953 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−126,292 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+551,744 · 2025Q4
TRIMRay Dalio (Bridgewater Associates)
−93,830 · 2025Q4
TRIMGeorge Soros (Soros Fund Mgmt)
−812,577 · 2025Q4
TRIMRenaissance Technologies
−347,245 · 2025Q4
NEWNorges Bank (Norway SWF)
+7,046,279 · 2025Q4
ADDKen Fisher (Fisher Asset Mgmt)
+1,496 · 2025Q4
TRIMMario Gabelli (GAMCO)
−100 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−675,639 · 2025Q3
ADDTwo Sigma Investments
+552,725 · 2025Q3
ADDD.E. Shaw & Co.
+140,892 · 2025Q3
ADDT. Rowe Price
+578,611 · 2025Q3

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