InvestorLens

IBKR — INTERACTIVE BROKERS GROUP IN

Public company

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For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying IBKR?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence
60
Institutional Conviction
Mixed · 3 buying vs 2 selling last quarter
52
Macro Tailwind
Macro conditions are mixed for this sector
56
Why? — Evidence & Confidence ▾

Of 5 tracked investors who changed their IBKR position last quarter, 3 bought and 2 sold (60% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime).

Supporting evidence
  • +3 tracked investors added or increased positions last quarter (Steve Mandel, Andreas Halvorsen, Paul Tudor Jones)
  • +8 tracked investors reported holding IBKR at their latest filing
  • +Macro Health is 56/100 in a Overheat regime — historically acceptable for this sectorsource
Contradicting evidence — always shown
  • −2 tracked investors reduced or exited last quarter (2 reduced, 0 sold out)
  • −13F data is disclosed up to 45 days after quarter end — positions may have changed since
Know the limits
  • · 13F disclosure lag (up to 45 days)
  • · Tracked investors are a sample, not the whole market
  • · Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/18/2026.

About INTERACTIVE BROKERS GROUP IN (IBKR)

INTERACTIVE BROKERS GROUP IN (IBKR) appears in the most recent 13F filings of 8 tracked institutional investors. The largest disclosed position is held by Andreas Halvorsen (Viking Global Investors), valued at $420M. Across recent filings, tracked investors recorded 9 new positions, 8 increased, 11 reduced, and 4 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in IBKR

53
/100
Mixed Activity
Added / Increased17
Reduced11
Exited4
BearishBullish
Crowded Trade Score™

How many top investors track IBKR

53
/100
Moderate Interest
8investors

Several tracked investors have exposure.

UndiscoveredCrowded
151015+

IBKR Ownership Composition

How INTERACTIVE BROKERS GROUP IN is held across tracked investor types, based on reported 13F positions.

Dominant Type
Other
44% of tracked value
Institutions
8
tracked investors
Total Reported
$965.3M
combined 13F value
Types4
  • Other43.6%
  • Multi-Strategy / Quant40.9%
  • Macro10.4%
  • Growth & Innovation5.2%
Other(1)
43.6%
Multi-Strategy / Quant(3)
40.9%
Macro(3)
10.4%
Growth & Innovation(1)
5.2%

Tracked investors currently reporting IBKR

  • Andreas HalvorsenJun 30, 2026
    Viking Global Investors
    Shares
    4.8M
    Value
    $420.5M
    % Portfolio
    1.20%
  • Ken GriffinJun 30, 2026
    Citadel Advisors
    Shares
    2.5M
    Value
    $217M
    % Portfolio
    0.02%
  • Izzy EnglanderJun 30, 2026
    Millennium Management
    Shares
    999.5K
    Value
    $87M
    % Portfolio
    0.03%
  • George SorosJun 30, 2026
    Soros Fund Management
    Shares
    151.5K
    Value
    $13.2M
    % Portfolio
    0.16%
  • Steve CohenJun 30, 2026
    Point72 Asset Management
    Shares
    1M
    Value
    $90.5M
    % Portfolio
    0.10%
  • Paul Tudor JonesJun 30, 2026
    Tudor Investment Corp
    Shares
    955.9K
    Value
    $83.2M
    % Portfolio
    0.12%
  • Steve MandelJun 30, 2026
    Lone Pine Capital
    Shares
    577.7K
    Value
    $50.3M
    % Portfolio
    0.31%
  • Ray DalioJun 30, 2026
    Bridgewater Associates
    Shares
    42.1K
    Value
    $3.7M
    % Portfolio
    0.02%

Recent activity

Frequently asked questions

How many institutional investors hold IBKR?
8 tracked institutional investors disclosed a position in IBKR (INTERACTIVE BROKERS GROUP IN) in their most recent 13F filing.
Who is the largest institutional holder of IBKR?
Andreas Halvorsen, Viking Global Investors, holds the largest disclosed position in IBKR, valued at $420M.
Did institutional ownership of IBKR increase or decrease?
Across recent 13F filings, tracked investors recorded 9 new positions, 8 increased, 11 reduced, and 4 fully exited IBKR.
Where does this IBKR ownership data come from?
SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.