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WINMILL & CO. INC

Position in IBKR — Interactive Brokers Group, Inc.

CIK 52234 WALPOLE, NH

Position in IBKR

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$28,479,488
+$6,534,184 QoQ
Shares Held
327,200
0.0% QoQ
Ownership
0.072%
of shares outstanding
% of Portfolio
6.31%
of 13F equity value
Holder Rank
#135
of 1,102 holders
Holding Since
Dec 2023
11 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

WINMILL & CO. INC holds $41,577,608 across 2 Capital Markets names. IBKR ranks #1 (68.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 IBKR
Interactive Brokers Group, Inc.
This page
327,200 $28,479,488

All Filings in IBKR

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11 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $28,479,488 327,200
2026-03-31 $21,945,304 327,200
2025-12-31 $21,042,232 327,200
2025-09-30 $22,514,632 327,200
2025-06-30 $18,130,152 327,200
2025-03-31 $13,545,262 81,800
2024-12-31 $14,451,606 81,800
2024-09-30 $11,399,648 81,800
2024-06-30 $10,028,680 81,800
2024-03-31 $9,137,878 81,800
2023-12-31 $6,781,220 81,800