인터랙티브 브로커스 그룹, Inc.
MX ˙ BMV ˙ US45841N1072
SecurityMX:IBKR / Interactive Brokers Group, Inc.
InstitutionLeuthold Group, Llc
Latest Disclosed Ownership6,904 shares
Latest Disclosed Value $ 463,051
Leuthold Group, Llc reports 2.90% decrease in ownership of IBKR / Interactive Brokers Group, Inc.

On May 6, 2026 - Leuthold Group, Llc filed a 13F-HR form disclosing ownership of 6,904 shares of Interactive Brokers Group, Inc. (MX:IBKR) valued at $463,051 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 7,110 shares of Interactive Brokers Group, Inc.. This represents a change in shares of -2.90% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-06 2026-03-31 13F Interactive Brokers Group COM 45841N107 6,904 -206 -2.90 463 1.31 0.0493
2026-02-05 2025-12-31 13F Interactive Brokers Group COM 45841N107 7,110 10 0.14 457 -6.35 0.0494
2025-11-06 2025-09-30 13F Interactive Brokers Group COM 45841N107 7,100 0 0.00 489 24.17 0.0535
2025-08-13 2025-06-30 13F Interactive Brokers Group COM 45841N107 7,100 5,325 300.00 393 34.13 0.0470
2025-05-13 2025-03-31 13F Interactive Brokers Group COM 45841N107 1,775 -60 -3.27 294 -9.57 0.0382
2025-02-03 2024-12-31 13F Interactive Brokers Group COM 45841N107 1,835 -46 -2.45 324 23.66 0.0389
2024-10-24 2024-09-30 13F Interactive Brokers Group COM 45841N107 1,881 -30 -1.57 262 11.97 0.0291
2024-08-12 2024-06-30 13F Interactive Brokers Group COM 45841N107 1,911 -283,006 -99.33 234 -96.63 0.0271
2014-02-14 2013-12-31 13F Interactive Brokers Group COM 45841N107 284,917 49,401 20.98 6,935 56.86 0.6209
2013-11-14 2013-09-30 13F Interactive Brokers Group COM 45841N107 235,516 -11,948 -4.83 4,421 11.87 0.4089
2013-08-14 2013-06-30 13F Interactive Brokers Group COM 45841N107 247,464 247,464 3,952 0.3661
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.