Interactive Brokers Group, Inc.
MX ˙ BMV ˙ US45841N1072
SecurityMX:IBKR / Interactive Brokers Group, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership4,324 shares
Latest Disclosed Value $ 290,007
Signaturefd, Llc reports 10.87% increase in ownership of IBKR / Interactive Brokers Group, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 4,324 shares of Interactive Brokers Group, Inc. (MX:IBKR) valued at $290,007 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 3,900 shares of Interactive Brokers Group, Inc.. This represents a change in shares of 10.87% 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)
2026-04-07 2026-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,324 424 10.87 290 16.00 0.0044
2026-01-20 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,900 226 6.15 251 -0.79 0.0038
2025-10-21 2025-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,674 258 7.55 253 33.33 0.0040
2025-07-16 2025-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,416 2,562 300.00 189 34.04 0.0032
2025-05-02 2025-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 854 -124 -12.68 141 -18.02 0.0027
2025-02-10 2024-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 978 -381 -28.04 173 -8.99 0.0033
2024-10-21 2024-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 1,359 118 9.51 189 24.34 0.0036
2024-07-29 2024-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 1,241 285 29.81 152 43.40 0.0031
2024-05-03 2024-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 956 23 2.47 107 37.66 0.0023
2024-02-01 2023-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 933 -304 -24.58 77 -28.04 0.0018
2023-11-03 2023-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 1,237 722 140.19 107 154.76 0.0028
2023-08-01 2023-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 515 -187 -26.64 43 -26.32 0.0011
2023-04-28 2023-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 702 43 6.53 58 21.28 0.0016
2023-01-30 2022-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 659 38 6.12 48 17.50 0.0014
2022-11-08 2022-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 621 -35 -5.34 40 11.11 0.0014
2022-08-10 2022-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 656 561 590.53 36 500.00 0.0012
2022-05-02 2022-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 95 43 82.69 6 50.00 0.0002
2022-01-25 2021-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 52 21 67.74 4 100.00 0.0001
2021-10-28 2021-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 31 17 121.43 2 100.00 0.0001
2021-07-26 2021-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 14 0 0.00 1 0.00 0.0000
2021-04-30 2021-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 14 0 0.00 1 0.00 0.0000
2021-02-11 2020-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 14 14 1 0.0000
2020-07-30 2020-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -66 -100.00 0 -100.00
2020-04-23 2020-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 66 66 3 0.0003
2019-05-09 2019-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -21 -100.00 0 -100.00
2019-02-13 2018-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 21 21 1 0.0001
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.