Interactive Brokers Group, Inc.
MX ˙ BMV ˙ US45841N1072
SecurityMX:IBKR / Interactive Brokers Group, Inc.
InstitutionDynamic Technology Lab Private Ltd
Latest Disclosed Ownership5,004 shares
Latest Disclosed Value $ 335,618
Dynamic Technology Lab Private Ltd ownership in IBKR / Interactive Brokers Group, Inc.

On May 15, 2026 - Dynamic Technology Lab Private Ltd filed a 13F-HR form disclosing ownership of 5,004 shares of Interactive Brokers Group, Inc. (MX:IBKR) valued at $335,618 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 12, 2025 disclosing 0 shares of Interactive Brokers Group, Inc..

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)
2026-05-15 2026-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,004 5,004 336 0.0545
2025-08-12 2025-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -15,989 -100.00 0 -100.00
2025-05-16 2025-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 15,989 11,688 271.75 2,648 248.42 0.3833
2025-02-13 2024-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,301 93 2.21 760 29.69 0.1222
2024-11-13 2024-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,208 4,208 586 0.0620
2024-05-14 2024-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -35,829 -100.00 0 -100.00
2024-02-09 2023-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 35,829 13,249 58.68 3 100.00 0.3141
2023-11-14 2023-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 22,580 18,243 420.64 2 0.1955
2023-08-14 2023-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,337 4,337 0 0.0454
2023-05-12 2023-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -18,559 -100.00 0 -100.00
2023-02-14 2022-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 18,559 29 0.16 1,343 13.43 0.1343
2022-11-14 2022-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 18,530 -25,920 -58.31 1,184 -51.57 0.1168
2022-08-12 2022-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 44,450 44,450 2,445 0.2763
2022-05-16 2022-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -8,170 -100.00 0 -100.00
2022-02-14 2021-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,170 8,170 649 0.0718
2021-11-15 2021-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -18,900 -100.00 0 -100.00
2021-08-13 2021-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 18,900 -14,064 -42.66 1,242 -48.42 0.1249
2021-05-14 2021-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 32,964 32,964 2,408 0.2719
2020-11-13 2020-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -12,288 -100.00 0 -100.00
2020-08-14 2020-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 12,288 -5,463 -30.78 513 -33.03 0.0772
2020-05-13 2020-03-31 13F INTERACTIVE BROKERS GRO COM CL A 45841N107 17,751 17,751 766 0.1494
2019-02-13 2018-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -7,150 -100.00 0 -100.00
2018-11-14 2018-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 7,150 7,150 396 0.0550
2018-06-14 2018-03-31 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -30,327 -100.00 0 -100.00
2018-02-09 2017-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 30,327 30,327 1,796 0.3187
2017-08-17 2017-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -15,091 -100.00 0 -100.00
2017-05-11 2017-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 15,091 4,947 48.77 524 41.62 0.1230
2017-02-13 2016-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 10,144 1,177 13.13 370 65.92 0.0994
2016-02-24 2014-09-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 8,967 8,967 223 0.2244
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.