Interactive Brokers Group, Inc.
US ˙ NasdaqGS ˙ US45841N1072

SecurityIBKR / Interactive Brokers Group, Inc.
InstitutionFmr Llc
Latest Disclosed Ownership1,246,298 shares
Ownership 1.96%
Fmr Llc ownership in IBKR / Interactive Brokers Group, Inc.

2016-02-12 - Fmr Llc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,246,298 shares of Interactive Brokers Group, Inc. (US:IBKR). This represents 1.955 percent ownership of the company.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2016-02-12 2016-02-12 13G/A 1,246,298 1.96
2015-02-13 2015-02-13 13G/A 3,425,883 5.86
2014-10-10 2014-10-10 13G/A 3,688,583 6.46
2014-02-14 2014-02-14 13G/A 6,765,952 12.38
2013-02-14 2013-02-14 13G/A 5,643,349 11.88
2012-02-14 2012-02-14 13G/A 4,292,428 9.42

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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 12,501,284 7,692,089 159.95 838,461 171.10 0.0088
2026-02-17 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,809,195 -1,419,289 -22.79 309,279 -27.84 0.0158
2025-11-13 2025-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 6,228,484 -447,103 -6.70 428,582 15.87 0.0223
2025-08-14 2025-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 6,675,587 5,422,236 432.62 369,894 78.23 0.0209
2025-05-12 2025-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 1,253,351 -28,531 -2.23 207,542 -8.36 0.0133
2025-02-13 2024-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 1,281,882 187,284 17.11 226,470 48.46 0.0135
2024-11-13 2024-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 1,094,598 119,187 12.22 152,543 27.56 0.0093
2024-08-13 2024-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 975,411 232,516 31.30 119,585 44.10 0.0077
2024-05-13 2024-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 742,895 -1,032,574 -58.16 82,989 -43.62 0.0056
2024-02-13 2023-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 1,775,469 1,936 0.11 147,186 -4.12 0.0113
2023-11-13 2023-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 1,773,533 1,204,573 211.71 153,517 224.81 0.0133
2023-08-11 2023-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 568,960 142,875 33.53 47,264 34.36 0.0040
2023-08-11 2023-03-31 13F/A-1 INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 426,085 234,766 122.71 35,178 154.15 0.0032
2023-05-11 2023-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 426,085 234,766 35,178 0.0006
2023-02-13 2022-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 191,319 -21,517 -10.11 13,842 1.76 0.0014
2022-11-10 2022-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 212,836 67,201 46.14 13,602 69.79 0.0014
2022-08-12 2022-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 145,635 -5,274 -3.49 8,011 -19.46 0.0008
2022-05-13 2022-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 150,909 36,432 31.82 9,947 9.42 0.0008
2022-02-14 2021-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 114,477 69,106 152.31 9,091 221.35 0.0007
2022-02-14 2021-09-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 45,371 18,329 67.78 2,829 59.20 0.0002
2021-11-15 2021-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 45,371 18,329 2,829 0.0000
2021-08-13 2021-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 27,042 17,152 173.43 1,777 146.12 0.0001
2021-05-14 2021-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 9,890 -1,091 -9.94 722 7.92 0.0001
2021-02-08 2020-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 10,981 -44 -0.40 669 25.75 0.0001
2020-11-13 2020-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 11,025 -21,423 -66.02 532 -60.74 0.0001
2020-08-24 2020-06-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 32,448 4,634 16.66 1,355 12.92 0.0001
2020-08-13 2020-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 32,448 4,634 1,355 33.2884
2020-05-14 2020-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 27,814 -5,173 -15.68 1,200 -21.98 0.0002
2020-02-07 2019-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 32,987 -5,851 -15.07 1,538 -26.34 0.0002
2019-11-13 2019-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 38,838 -195 -0.50 2,088 -1.28 0.0003
2019-08-13 2019-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 39,033 -22,060 -36.11 2,115 -33.26 0.0002
2019-05-13 2019-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 61,093 -5,678 -8.50 3,169 -13.15 0.0004
2019-02-13 2018-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 66,771 -62,787 -48.46 3,649 -49.07 0.0005
2018-11-09 2018-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 129,558 -10,579 -7.55 7,165 -20.63 0.0008
2018-08-10 2018-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 140,137 51,973 58.95 9,027 52.25 0.0011
2018-05-14 2018-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 88,164 -400,800 -81.97 5,929 -79.52 0.0007
2018-02-12 2017-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 488,964 -247,242 -33.58 28,952 -12.68 0.0034
2017-11-13 2017-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 736,206 13,429 1.86 33,158 22.59 0.0040
2017-08-29 2017-06-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 722,777 253,611 54.06 27,047 66.03 0.0034
2017-08-11 2017-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 722,777 253,611 27,047
2017-05-11 2017-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 469,166 9,998 2.18 16,290 -2.83 0.0021
2017-02-10 2016-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 459,168 -121,465 -20.92 16,764 -18.14 0.0022
2016-11-14 2016-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 580,633 -144,770 -19.96 20,479 -20.25 0.0027
2016-08-11 2016-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 725,403 -289,640 -28.53 25,679 -35.66 0.0035
2016-05-16 2016-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 1,015,043 -230,800 -18.53 39,911 -26.52 0.0055
2016-02-12 2015-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 1,245,843 74,100 6.32 54,319 17.45 0.0073
2015-11-10 2015-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 1,171,743 -625,118 -34.79 46,248 -38.07 0.0066
2015-08-25 2015-06-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 1,796,861 -283,421 -13.62 74,677 5.52 0.0096
2015-08-13 2015-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 1,796,861 74,677
2015-05-14 2015-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 2,080,282 -1,345,601 -39.28 70,771 -29.16 0.0090
2015-02-17 2014-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 3,425,883 -262,700 -7.12 99,898 8.55 0.0130
2014-11-14 2014-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 3,688,583 -2,017,570 -35.36 92,030 -30.75 0.0125
2014-08-14 2014-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 5,706,153 -244,905 -4.12 132,896 3.05 0.0178
2014-05-15 2014-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 5,951,058 -807,027 -11.94 128,959 -21.60 0.0179
2014-02-13 2013-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 6,758,085 -359,585 -5.05 164,492 23.12 0.0232
2013-11-14 2013-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 7,117,670 58,270 0.83 133,599 18.50 0.0205
2013-09-24 2013-06-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 7,059,400 7,059,400 112,738 0.0185
2013-08-14 2013-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 7,059,400 112,738 0.0185
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.