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One Madison Group LLC

Position in IBKR — Interactive Brokers Group, Inc.

CIK 1728278 NEW YORK, NY

Position in IBKR

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$21,716,480
+$7,002,999 QoQ
Shares Held
249,500
+13.7% QoQ
Ownership
0.055%
of shares outstanding
% of Portfolio
2.09%
of 13F equity value
Holder Rank
#152
of 1,105 holders
Holding Since
Dec 2024
7 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in IBKR Over Time

Shares Held

Position Value (USD)

Position in Capital Markets

Financial Services · as of Jun 30, 2026

One Madison Group LLC holds $21,716,480 across 1 Capital Markets name. IBKR ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 IBKR
Interactive Brokers Group, Inc.
This page
249,500 $21,716,480

All Filings in IBKR

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7 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $21,716,480 249,500
2026-03-31 $14,713,481 219,375
2025-12-31 $9,003,400 140,000
2025-09-30 $11,697,700 170,000
2025-06-30 $11,303,640 204,000
2025-03-31 $9,935,400 60,000
2024-12-31 $26,500,500 150,000