Ticker · CUSIP 45841N107

IBKR

INTERACTIVE BROKERS GROUP IN
Financial Services·Capital Markets
···Share
Holders (tracked)
26
Combined shares
32,049,626
Combined value
$2.06B
Last close
$81.71
Quarter
2025Q4
Price · 1Y$81.71+42.03 (+105.94%)H $81.71 · L $38.18 · Avg Vol 5.3M
Congress buyCongress sell
$40.00$50.00$60.00$70.00$80.00VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
+5 vs previous quarter over the last 8.
26122024Q12025Q4
Price is +27.1% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

30 events
  1. Ken Griffin (Citadel Advisors) trimmed2026-02-17
    −126,292 shares · 2025Q4
    Position
  2. D.E. Shaw & Co. trimmed2026-02-17
    −165,811 shares · 2025Q4
    Position
  3. Two Sigma Investments trimmed2026-02-17
    −48,632 shares · 2025Q4
    Position
  4. Izzy Englander (Millennium Mgmt) added2026-02-17
    +93,105 shares · 2025Q4
    Position
  5. Steve Cohen (Point72) added2026-02-17
    +492,900 shares · 2025Q4
    Position
  6. T. Rowe Price added2026-02-17
    +77,027 shares · 2025Q4
    Position
  7. Wellington Management trimmed2026-02-17
    −2,616,953 shares · 2025Q4
    Position
  8. Paul Tudor Jones (Tudor Investment) opened position2026-02-17
    +551,744 shares · 2025Q4
    Position
  9. Ron Baron (Baron Capital / BAMCO) added2026-02-17
    +33,608 shares · 2025Q4
    Position
  10. AQR Capital Management added2026-02-17
    +20,051 shares · 2025Q4
    Position
  11. George Soros (Soros Fund Mgmt) trimmed2026-02-13
    −812,577 shares · 2025Q4
    Position
  12. Ray Dalio (Bridgewater Associates) trimmed2026-02-13
    −93,830 shares · 2025Q4
    Position
  13. Renaissance Technologies trimmed2026-02-12
    −347,245 shares · 2025Q4
    Position
  14. Norges Bank (Norway SWF) opened position2026-02-10
    +7,046,279 shares · 2025Q4
    Position
  15. Ken Fisher (Fisher Asset Mgmt) added2026-02-09
    +1,496 shares · 2025Q4
    Position
  16. Mario Gabelli (GAMCO) trimmed2026-02-05
    −100 shares · 2025Q4
    Position
  17. Ron Baron (Baron Capital / BAMCO) added2025-11-14
    +411,344 shares · 2025Q3
    Position
  18. AQR Capital Management added2025-11-14
    +31,389 shares · 2025Q3
    Position
  19. Izzy Englander (Millennium Mgmt) trimmed2025-11-14
    −675,639 shares · 2025Q3
    Position
  20. Two Sigma Investments added2025-11-14
    +552,725 shares · 2025Q3
    Position
  21. D.E. Shaw & Co. added2025-11-14
    +140,892 shares · 2025Q3
    Position
  22. T. Rowe Price added2025-11-14
    +578,611 shares · 2025Q3
    Position
  23. Wellington Management added2025-11-14
    +1,630,620 shares · 2025Q3
    Position
  24. George Soros (Soros Fund Mgmt) trimmed2025-11-14
    −649,670 shares · 2025Q3
    Position
  25. Renaissance Technologies trimmed2025-11-13
    −1,015,300 shares · 2025Q3
    Position
  26. Ray Dalio (Bridgewater Associates) opened position2025-11-13
    +582,770 shares · 2025Q3
    Position
  27. Norges Bank (Norway SWF) exited2025-11-13
    −5,138,107 shares · 2025Q3
    Position
  28. Mario Gabelli (GAMCO) trimmed2025-11-12
    −5,655 shares · 2025Q3
    Position
  29. Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12
    −1,366 shares · 2025Q3
    Position
  30. 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.
InvestorFirst inCost basisReturnPosition 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 Investments2022Q3$64.40+26.9%$1.3M
Two Sigma Investments2022Q3$64.40+26.9%$1.3M
Two Sigma Investments2022Q3$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 Management2017Q3$67.24+21.5%$676.9M
T. Rowe Price2016Q1$67.58+20.9%$84.1M
Ray Dalio (Bridgewater Associates)2022Q1$73.07+11.8%$40.0M
AQR Capital Management2016Q1$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 Technologies2016Q2$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
Added to6
Trimmed8
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
13
$50.70B
2022Q2
16
$51.11B
2022Q3
17
$939.5M
2022Q4
17
$1.03B
2023Q1
20
$1.07B
2023Q2
16
$966.7M
2023Q3
15
$1.06B
2023Q4
13
$1.09B
2024Q1
12
$1.42B
2024Q2
16
$1.73B
2024Q3
16
$610.4M
2024Q4
19
$940.5M
2025Q1
21
$954.2M
2025Q2
23
$1.77B
2025Q3
21
$1.92B
2025Q4
26
$2.06B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-10-14Lisa McClainSell$1K – $15KPDF ↗
2025-08-13Lisa McClainBuy$1K – $15KPDF ↗
2025-06-24Lisa McClainSell$1K – $15KPDF ↗
2025-06-17Lisa McClainBuy$1K – $15KPDF ↗

Who owns IBKR

26 super-investors · 2025Q4
Tracked stake
32.05M
shares
Combined value
$2.06B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New4Added9Trim13
#ManagerSharesValue
1Wellington Management8.28M$533M
2Norges Bank
Norway SWF
7.05M$453M
3Ron Baron
Baron Capital / BAMCO
4.64M$299M
4Two Sigma Investments3.53M$227M
5Ken Griffin
Citadel Advisors
1.26M$81M
6T. Rowe Price1.03M$66M
7Ken Griffin
Citadel Advisors
977.2K$63M
8Izzy Englander
Millennium Mgmt
868.5K$56M
9George Soros
Soros Fund Mgmt
771.5K$50M
10Ken Griffin
Citadel Advisors
650.5K$42M
11Renaissance Technologies616.4K$40M
12Paul Tudor Jones
Tudor Investment
551.7K$35M
13Ray Dalio
Bridgewater Associates
488.9K$31M
14Steve Cohen
Point72
393.1K$25M
15Izzy Englander
Millennium Mgmt
335.3K$22M
16Steve Cohen
Point72
239.5K$15M
17AQR Capital Management95.2K$6M
18Izzy Englander
Millennium Mgmt
72.5K$5M
19D.E. Shaw & Co.41.9K$3M
20Paul Tudor Jones
Tudor Investment
38.8K$2M
21Paul Tudor Jones
Tudor Investment
29.2K$2M
22D.E. Shaw & Co.24.7K$2M
23Two Sigma Investments22.9K$1M
24Mario Gabelli
GAMCO
17.3K$1M
25Two Sigma Investments16.0K$1M
26Ken Fisher
Fisher Asset Mgmt
9.3K$596K

Recent moves

20 transactions
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