IBKR — INTERACTIVE BROKERS GROUP INC COM CL A

Ownership history in BROOKTREE CAPITAL MANAGEMENT  ·  25 quarters on record

AI Ownership Summary

BROOKTREE CAPITAL MANAGEMENT reported INTERACTIVE BROKERS GROUP INC COM CL A (IBKR) in 25 quarterly 13F filings from 2023 Q3 through 2025 Q4. Peak portfolio weight reached 18.23% in 2025 Q3. The latest visible filing shows IBKR at 17.14% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this IBKR ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was BROOKTREE CAPITAL MANAGEMENT's position in INTERACTIVE BROKERS GROUP INC COM CL A, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

IBKR was reported at 17.14% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
18.23% in 2025 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q3 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

IBKR stock page BROOKTREE CAPITAL MANAGEMENT fund profile BROOKTREE CAPITAL MANAGEMENT full holdings
How BROOKTREE CAPITAL MANAGEMENT held IBKR — position size vs. price
% of Fund (quarterly)    IBKR price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 400,728 -16,138 -3.9% 17.14% $25.8M 2026-02-14 (Est.) $74.67
2025 Q3 REDUCED 416,866 -84,973 -16.9% 18.23% $28.7M 2025-11-07 $70.38
2025 Q2 ADDED 501,839 +375,254 +296.4% 18.18% $27.8M 2025-08-06 $63.59
2025 Q1 REDUCED 126,585 -6,441 -4.8% 15.73% $21.0M 2025-05-06 $44.35
2024 Q4 REDUCED 133,026 -4,586 -3.3% 17.43% $23.5M 2025-02-10 $56.19
2024 Q3 REDUCED 137,612 -1,397 -1.0% 15.58% $19.2M 2024-11-06 $42.60
2024 Q2 REDUCED 139,009 -12,866 -8.5% 14.57% $17.0M 2024-08-05 $26.90
2024 Q1 REDUCED 151,875 -6,198 -3.9% 13.08% $17.0M 2024-05-06 $30.15
2023 Q4 REDUCED 158,073 -11,791 -6.9% 10.59% $13.1M 2024-02-05 $23.47
2023 Q3 REDUCED 169,864 -1,799 -1.0% 12.28% $14.7M 2023-11-06 $19.93
15 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding IBKR

As of 2025 Q4 — sorted by position size

Hengistbury Investment Partners LLP 3Y 7Y 32.8% Oakcliff Capital Partners, LP 3Y 7Y 28.42% Greenwich Wealth Management LLC 3Y 7Y 26.35% Ancient Art, L.P. 3Y 7Y 23.91% Systrade AG 3Y 19.62% Lansing Management LP 3Y 7Y 12.79% RV Capital AG 3Y 7Y 11.27% Bronte Capital Management Pty Ltd. 3Y 7Y 9.53% Progeny 3, Inc. 3Y 7Y 7.37% Crocodile Capital Partners GmbH 3Y 7.2%

FAQ About BROOKTREE CAPITAL MANAGEMENT and IBKR

These are the practical questions this page is built to answer before you even open the full history table.

How long has BROOKTREE CAPITAL MANAGEMENT reported owning IBKR?

BROOKTREE CAPITAL MANAGEMENT reported IBKR across 10 quarterly 13F filings, from 2023 Q3 through 2025 Q4.

What was the largest reported IBKR position in BROOKTREE CAPITAL MANAGEMENT's portfolio?

The largest reported portfolio weight for IBKR was 18.23% in 2025 Q3.

What is the latest reported IBKR position on this page?

The most recent filing on this page is 2025 Q4, when BROOKTREE CAPITAL MANAGEMENT reported 400,728 shares, equal to 17.14% of portfolio, with an estimated market value of $25.8M.

What does the chart on this IBKR ownership page compare?

The chart compares BROOKTREE CAPITAL MANAGEMENT's quarterly IBKR portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

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