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BLAIR WILLIAM & CO/IL

Position in IBKR — Interactive Brokers Group, Inc.

CIK 902367 CHICAGO, IL

Position in IBKR

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$857,605
+$559,211 QoQ
Shares Held
9,853
+121.5% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#601
of 1,105 holders
Holding Since
Jun 2025
5 quarters on record
Voting authority Sole 45% Shared 0% None 55%

Common Shares in IBKR Over Time

Shares Held

Position Value (USD)

Position in Capital Markets

Financial Services · as of Jun 30, 2026

BLAIR WILLIAM & CO/IL holds $363,146,817 across 18 Capital Markets names. IBKR ranks #11 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in IBKR

Export CSV
5 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $857,605 9,853
2026-03-31 $298,394 4,449
2025-12-31 $273,703 4,256
2025-09-30 $303,039 4,404
2025-06-30 $225,241 4,065