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IBKR · Interactive Brokers Group, Inc.

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$93.89 +4.04 (+4.50%)
Market Cap
$42.25B
Shares
453.08M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 1,109
Total Value: $34,314,214,230
Total Shares: 394,204,967

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 1,109 13F filers · Δ vs Mar 31, 2026
Top Holder
8.4%
Sep 2023 → Jun 2026 · range 8.1% – 13.5%
+0.3 pts
Top 5
26.2%
Sep 2023 → Jun 2026 · range 26.2% – 39.1%
−1.2 pts
Top 10
37.4%
Sep 2023 → Jun 2026 · range 37.4% – 53.1%
−3.3 pts
HHI
232
Sep 2023 → Jun 2026 · range 232 – 405
Broadly held−18

Quarterly Activity

vs Mar 31, 2026
New
195
Increased
398
Decreased
379
Sold Out
93
Unchanged
137
Holder count: +102
Institutional value: +32.1%
Shares held: +1.8%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 1,151
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1381197 CUSIP 45841N107 13F (30d) 952 filings 941 filers Visit website Investor relations