Interactive Brokers Group, Inc.
MX ˙ BMV ˙ US45841N1072
SecurityMX:IBKR / Interactive Brokers Group, Inc.
InstitutionCWM Advisors, LLC
Latest Disclosed Ownership68,341 shares
Latest Disclosed Value $ 4,583,631
CWM Advisors, LLC reports 64.37% decrease in ownership of IBKR / Interactive Brokers Group, Inc.

On May 13, 2026 - CWM Advisors, LLC filed a 13F-HR/A form disclosing ownership of 68,341 shares of Interactive Brokers Group, Inc. (MX:IBKR) valued at $4,583,631 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 191,790 shares of Interactive Brokers Group, Inc.. This represents a change in shares of -64.37% 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)
2026-05-13 2026-03-31 13F/A-1 INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 68,341 -123,449 -64.37 4,584 -62.84 0.9195
2026-04-23 2026-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 175,261 -16,529 11,755 0.9674
2026-02-17 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 191,790 -10,493 -5.19 12,334 -11.39 1.1098
2025-10-15 2025-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 202,283 -13,407 -6.22 13,919 16.47 1.3548
2025-07-24 2025-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 215,690 168,349 355.61 11,951 52.46 1.3020
2025-06-03 2025-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 47,341 7,734 19.53 7,839 12.03 0.9318
2025-01-17 2024-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 39,607 -5,980 -13.12 6,997 10.14 0.7831
2024-10-10 2024-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 45,587 2,188 5.04 6,353 19.42 0.6499
2024-08-12 2024-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 43,399 -5,880 -11.93 5,321 -3.34 0.6132
2024-05-07 2024-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 49,279 2,881 6.21 5,505 43.11 0.5632
2024-02-12 2023-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 46,398 1,556 3.47 3,846 -0.90 0.4230
2023-10-26 2023-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 44,842 -12,787 -22.19 3,882 -18.93 0.4956
2023-07-31 2023-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 57,629 1,408 2.50 4,787 3.15 0.5791
2023-04-24 2023-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 56,221 5,504 10.85 4,642 26.49 0.5907
2023-01-26 2022-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 50,717 44,880 768.89 3,669 883.65 0.4722
2022-11-07 2022-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,837 -833 -12.49 373 1.63 0.0527
2022-08-10 2022-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 6,670 75 1.14 367 -15.63 0.0487
2022-04-21 2022-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 6,595 -177 -2.61 435 -19.14 0.0503
2022-02-14 2021-12-31 13F/A-1 INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 6,772 1,163 20.73 538 53.71 0.0617
2021-11-09 2021-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,609 5,609 350 0.0442
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.