Interactive Brokers Group, Inc.
MX ˙ BMV ˙ US45841N1072
SecurityMX:IBKR / Interactive Brokers Group, Inc.
InstitutionLandscape Capital Management, L.l.c.
Latest Disclosed Ownership14,306 shares
Latest Disclosed Value $ 959,503
Landscape Capital Management, L.l.c. ownership in IBKR / Interactive Brokers Group, Inc.

On May 12, 2026 - Landscape Capital Management, L.l.c. filed a 13F-HR form disclosing ownership of 14,306 shares of Interactive Brokers Group, Inc. (MX:IBKR) valued at $959,503 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 14, 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)
2026-05-12 2026-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 14,306 14,306 960 0.0306
2025-05-14 2025-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -2,363 -100.00 0 -100.00
2025-02-12 2024-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 2,363 241 11.36 417 41.36 0.0443
2024-11-08 2024-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 2,122 -7,973 -78.98 296 -76.15 0.0301
2024-08-12 2024-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 10,095 5,095 101.90 1,238 121.68 0.1045
2024-05-09 2024-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,000 -400 -7.41 559 24.83 0.0488
2024-02-05 2023-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,400 0 0.00 448 -4.28 0.0400
2023-11-08 2023-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,400 1,333 32.78 467 38.58 0.0618
2023-08-11 2023-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,067 4,067 338 0.0445
2020-08-13 2020-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -29,960 -100.00 0 -100.00
2020-05-13 2020-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 29,960 29,960 1,293 0.1388
2020-02-11 2019-12-31 13F/A-1 INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -7,291 -100.00 0 -100.00
2019-11-12 2019-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 7,291 -1,232 -14.46 392 -15.15 0.0289
2019-08-08 2019-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,523 0 0.00 462 4.52 0.0369
2019-05-15 2019-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,523 -449 -5.00 442 -9.80 0.0419
2019-02-14 2018-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,972 -9,096 -50.34 490 -50.95 0.0403
2018-11-13 2018-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 18,068 18,068 999 0.0739
2018-08-13 2018-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -7,054 -100.00 0 -100.00
2018-05-11 2018-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 7,054 7,054 474 0.0337
2018-02-13 2017-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -17,587 -100.00 0 -100.00
2017-11-14 2017-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 17,587 17,587 792 0.0796
2017-08-14 2017-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -25,776 -100.00 0 -100.00
2017-05-12 2017-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 25,776 25,776 895 0.0874
2016-11-14 2016-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -16,416 -100.00 0 -100.00
2016-08-15 2016-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 16,416 16,416 581 0.0768
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.