The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Nemser Earl H since 2015.
This trader's CIK number is 1391400.
At the time of last reporting, Nemser Earl H was the Vice Chairman of Interactive Brokers Group, Inc.. (stock ticker symbol IBKR).
Also see all insider trading activities at Interactive Brokers Group, Inc..
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | IBKR | 0 | $0 | 400,000 | $26,517,069 | 0 | $0 |
| 2024 | IBKR | 0 | $0 | 200,000 | $19,837,293 | 0 | $0 |
| 2020 | IBKR | 0 | $0 | 843,131 | $43,827,678 | 0 | $0 |
| 2018 | IBKR | 0 | $0 | 32,000 | $2,009,600 | 0 | $0 |
| 2017 | IBKR | 0 | $0 | 52,683 | $2,318,232 | 0 | $0 |
| 2016 | IBKR | 0 | $0 | 4,000 | $160,840 | 0 | $0 |
| 2015 | IBKR | 0 | $0 | 114,646 | $4,456,259 | 0 | $0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-14 | IBKR | Sale | 53,900 | 64.04 | 3,451,756 |
| 2025-08-12 | IBKR | Sale | 194,086 | 67.64 | 13,127,006 |
| 2025-08-13 | IBKR | Sale | 7,600 | 65.60 | 498,559 |
| 2025-08-08 | IBKR | Sale | 12,841 | 65.77 | 844,552 |
| 2025-08-11 | IBKR | Sale | 12,841 | 66.09 | 848,661 |
| 2025-08-07 | IBKR | Sale | 12,841 | 64.14 | 823,685 |
| 2025-08-06 | IBKR | Sale | 12,841 | 63.81 | 819,448 |
| 2025-08-04 | IBKR | Sale | 12,841 | 64.54 | 828,758 |
| 2025-08-05 | IBKR | Sale | 12,841 | 64.24 | 824,905 |
| 2025-08-01 | IBKR | Sale | 12,841 | 64.28 | 825,355 |
| 2025-07-31 | IBKR | Sale | 14,641 | 66.44 | 972,821 |
| 2025-07-30 | IBKR | Sale | 39,786 | 66.48 | 2,644,973 |
| 2025-07-28 | IBKR | Sale | 100 | 65.90 | 6,590 |
| 2024-02-21 | IBKR | Sale | 5,000 | 104.86 | 524,300 |
| 2024-02-22 | IBKR | Sale | 5,000 | 107.01 | 535,050 |
| 2024-02-15 | IBKR | Sale | 10,000 | 103.33 | 1,033,349 |
| 2024-02-16 | IBKR | Sale | 5,000 | 105.68 | 528,400 |
| 2024-02-14 | IBKR | Sale | 25,000 | 101.69 | 2,542,125 |
| 2024-02-13 | IBKR | Sale | 50,000 | 101.02 | 5,051,000 |
| 2024-02-02 | IBKR | Sale | 74,218 | 96.29 | 7,146,451 |
| 2024-02-05 | IBKR | Sale | 25,782 | 96.06 | 2,476,618 |
| 2020-10-02 | IBKR | Sale | 41,114 | 48.82 | 2,007,185 |
| 2020-09-23 | IBKR | Sale | 1,000 | 48.97 | 48,970 |
| 2020-09-22 | IBKR | Sale | 38,500 | 48.56 | 1,869,560 |
| 2020-09-18 | IBKR | Sale | 16,200 | 48.03 | 778,086 |
| 2020-09-17 | IBKR | Sale | 8,100 | 47.79 | 387,099 |
| 2020-09-16 | IBKR | Sale | 20,255 | 47.71 | 966,366 |
| 2020-09-11 | IBKR | Sale | 11,400 | 47.66 | 543,324 |
| 2020-09-14 | IBKR | Sale | 11,700 | 47.90 | 560,430 |
| 2020-09-09 | IBKR | Sale | 9,600 | 48.38 | 464,448 |
| 2020-09-10 | IBKR | Sale | 300 | 48.00 | 14,400 |
| 2020-09-04 | IBKR | Sale | 23,127 | 52.69 | 1,218,445 |
| 2020-09-08 | IBKR | Sale | 30,500 | 49.70 | 1,515,758 |
| 2020-09-02 | IBKR | Sale | 55,497 | 53.29 | 2,957,435 |
| 2020-09-03 | IBKR | Sale | 43,800 | 52.98 | 2,320,524 |
| 2020-08-31 | IBKR | Sale | 62,500 | 53.20 | 3,325,000 |
| 2020-09-01 | IBKR | Sale | 52,603 | 53.17 | 2,796,901 |
| 2020-08-27 | IBKR | Sale | 130,581 | 53.01 | 6,922,098 |
| 2020-08-28 | IBKR | Sale | 200,373 | 53.23 | 10,665,854 |
| 2020-08-24 | IBKR | Sale | 45,834 | 51.93 | 2,380,159 |
| 2020-08-25 | IBKR | Sale | 40,147 | 51.95 | 2,085,636 |
| 2018-01-22 | IBKR | Sale | 32,000 | 62.80 | 2,009,600 |
| 2017-10-26 | IBKR | Sale | 20 | 52.41 | 1,048 |
| 2017-10-26 | IBKR | Sale | 483 | 52.35 | 25,287 |
| 2017-10-25 | IBKR | Sale | 807 | 51.09 | 41,225 |
| 2017-10-23 | IBKR | Sale | 841 | 50.23 | 42,239 |
| 2017-10-24 | IBKR | Sale | 1,842 | 51.16 | 94,236 |
| 2017-10-19 | IBKR | Sale | 841 | 49.38 | 41,528 |
| 2017-10-20 | IBKR | Sale | 842 | 49.41 | 41,603 |
| 2017-10-17 | IBKR | Sale | 841 | 47.36 | 39,829 |
| 2017-10-18 | IBKR | Sale | 842 | 49.93 | 42,041 |
| 2017-10-16 | IBKR | Sale | 842 | 47.46 | 39,961 |
| 2017-10-13 | IBKR | Sale | 833 | 47.66 | 39,700 |
| 2017-10-11 | IBKR | Sale | 767 | 47.68 | 36,570 |
| 2017-10-12 | IBKR | Sale | 841 | 47.88 | 40,267 |
| 2017-10-09 | IBKR | Sale | 816 | 47.63 | 38,866 |
| 2017-10-10 | IBKR | Sale | 842 | 47.22 | 39,759 |
| 2017-10-05 | IBKR | Sale | 808 | 47.56 | 38,428 |
| 2017-10-06 | IBKR | Sale | 841 | 47.49 | 39,939 |
| 2017-10-04 | IBKR | Sale | 841 | 47.32 | 39,796 |
| 2017-10-03 | IBKR | Sale | 782 | 46.91 | 36,683 |
| 2017-10-02 | IBKR | Sale | 842 | 45.84 | 38,601 |
| 2017-09-29 | IBKR | Sale | 841 | 44.91 | 37,769 |
| 2017-09-27 | IBKR | Sale | 790 | 44.28 | 34,981 |
| 2017-09-28 | IBKR | Sale | 842 | 44.75 | 37,679 |
| 2017-09-26 | IBKR | Sale | 791 | 43.71 | 34,574 |
| 2017-09-25 | IBKR | Sale | 799 | 44.10 | 35,235 |
| 2017-09-22 | IBKR | Sale | 782 | 43.76 | 34,220 |
| 2017-09-21 | IBKR | Sale | 841 | 43.43 | 36,524 |
| 2017-09-19 | IBKR | Sale | 842 | 43.29 | 36,450 |
| 2017-09-20 | IBKR | Sale | 782 | 43.57 | 34,071 |
| 2017-09-15 | IBKR | Sale | 842 | 41.93 | 35,305 |
| 2017-09-18 | IBKR | Sale | 841 | 42.66 | 35,877 |
| 2017-09-14 | IBKR | Sale | 824 | 42.07 | 34,665 |
| 2017-09-13 | IBKR | Sale | 842 | 41.81 | 35,204 |
| 2017-09-11 | IBKR | Sale | 842 | 41.92 | 35,296 |
| 2017-09-12 | IBKR | Sale | 841 | 41.88 | 35,221 |
| 2017-09-11 | IBKR | Sale | 842 | 41.92 | 35,296 |
| 2017-09-12 | IBKR | Sale | 841 | 41.88 | 35,221 |
| 2017-09-07 | IBKR | Sale | 782 | 41.24 | 32,249 |
| 2017-09-08 | IBKR | Sale | 841 | 41.55 | 34,943 |
| 2017-09-06 | IBKR | Sale | 842 | 41.60 | 35,027 |
| 2017-09-05 | IBKR | Sale | 833 | 42.40 | 35,319 |
| 2017-09-01 | IBKR | Sale | 824 | 42.34 | 34,892 |
| 2017-08-31 | IBKR | Sale | 842 | 41.61 | 35,035 |
| 2017-08-29 | IBKR | Sale | 782 | 41.80 | 32,687 |
| 2017-08-30 | IBKR | Sale | 841 | 41.50 | 34,901 |
| 2017-08-25 | IBKR | Sale | 807 | 42.42 | 34,232 |
| 2017-08-28 | IBKR | Sale | 842 | 42.09 | 35,439 |
| 2017-08-24 | IBKR | Sale | 782 | 41.91 | 32,773 |
| 2017-08-23 | IBKR | Sale | 842 | 41.51 | 34,951 |
| 2017-08-21 | IBKR | Sale | 808 | 40.68 | 32,869 |
| 2017-08-22 | IBKR | Sale | 841 | 41.19 | 34,640 |
| 2017-08-17 | IBKR | Sale | 808 | 40.78 | 32,950 |
| 2017-08-18 | IBKR | Sale | 841 | 40.76 | 34,279 |
| 2017-08-15 | IBKR | Sale | 842 | 41.19 | 34,681 |
| 2017-08-16 | IBKR | Sale | 841 | 41.54 | 34,935 |
| 2017-08-14 | IBKR | Sale | 841 | 41.29 | 34,724 |
| 2017-08-10 | IBKR | Sale | 842 | 40.57 | 34,159 |
| 2017-08-11 | IBKR | Sale | 782 | 40.63 | 31,772 |
| 2017-08-08 | IBKR | Sale | 833 | 40.39 | 33,644 |
| 2017-08-09 | IBKR | Sale | 841 | 40.24 | 33,841 |
| 2017-08-07 | IBKR | Sale | 842 | 40.37 | 33,991 |
| 2017-08-04 | IBKR | Sale | 765 | 40.69 | 31,127 |
| 2017-08-02 | IBKR | Sale | 816 | 40.30 | 32,884 |
| 2017-08-03 | IBKR | Sale | 841 | 40.54 | 34,094 |
| 2016-04-22 | IBKR | Sale | 4,000 | 40.21 | 160,840 |
| 2015-11-12 | IBKR | Sale | 1,117 | 42.16 | 47,092 |
| 2015-11-11 | IBKR | Sale | 1,298 | 43.10 | 55,943 |
| 2015-11-10 | IBKR | Sale | 1,303 | 43.09 | 56,152 |
| 2015-11-06 | IBKR | Sale | 1,274 | 43.62 | 55,578 |
| 2015-11-09 | IBKR | Sale | 1,259 | 43.38 | 54,615 |
| 2015-11-04 | IBKR | Sale | 1,303 | 41.86 | 54,543 |
| 2015-11-05 | IBKR | Sale | 1,262 | 41.80 | 52,751 |
| 2015-11-03 | IBKR | Sale | 1,302 | 42.42 | 55,230 |
| 2015-11-02 | IBKR | Sale | 1,303 | 42.35 | 55,188 |
| 2015-10-29 | IBKR | Sale | 1,295 | 41.54 | 53,794 |
| 2015-10-30 | IBKR | Sale | 1,291 | 41.28 | 53,292 |
| 2015-10-27 | IBKR | Sale | 1,298 | 39.64 | 51,452 |
| 2015-10-28 | IBKR | Sale | 1,260 | 40.82 | 51,429 |
| 2015-10-26 | IBKR | Sale | 1,303 | 39.58 | 51,572 |
| 2015-10-23 | IBKR | Sale | 1,270 | 39.04 | 49,580 |
| 2015-10-21 | IBKR | Sale | 1,216 | 39.07 | 47,509 |
| 2015-10-22 | IBKR | Sale | 1,298 | 38.57 | 50,063 |
| 2015-10-19 | IBKR | Sale | 1,252 | 39.80 | 49,829 |
| 2015-10-20 | IBKR | Sale | 1,256 | 40.50 | 50,868 |
| 2015-10-16 | IBKR | Sale | 1,302 | 39.01 | 50,791 |
| 2015-10-15 | IBKR | Sale | 1,302 | 38.05 | 49,547 |
| 2015-10-13 | IBKR | Sale | 1,273 | 38.78 | 49,373 |
| 2015-10-14 | IBKR | Sale | 1,303 | 37.09 | 48,328 |
| 2015-10-08 | IBKR | Sale | 1,302 | 39.57 | 51,520 |
| 2015-10-09 | IBKR | Sale | 1,292 | 39.42 | 50,937 |
| 2015-10-07 | IBKR | Sale | 1,303 | 39.27 | 51,168 |
| 2015-10-06 | IBKR | Sale | 1,302 | 39.66 | 51,630 |
| 2015-10-05 | IBKR | Sale | 1,303 | 39.93 | 52,028 |
| 2015-10-02 | IBKR | Sale | 1,302 | 38.70 | 50,393 |
| 2015-09-30 | IBKR | Sale | 1,302 | 39.00 | 50,778 |
| 2015-10-01 | IBKR | Sale | 1,303 | 39.91 | 51,996 |
| 2015-09-29 | IBKR | Sale | 1,212 | 38.01 | 46,068 |
| 2015-09-28 | IBKR | Sale | 1,288 | 39.37 | 50,708 |
| 2015-09-24 | IBKR | Sale | 1,302 | 39.19 | 51,025 |
| 2015-09-25 | IBKR | Sale | 1,238 | 40.43 | 50,052 |
| 2015-09-22 | IBKR | Sale | 1,302 | 38.89 | 50,634 |
| 2015-09-23 | IBKR | Sale | 1,303 | 39.28 | 51,181 |
| 2015-09-18 | IBKR | Sale | 1,292 | 38.70 | 50,000 |
| 2015-09-21 | IBKR | Sale | 1,302 | 39.33 | 51,207 |
| 2015-09-16 | IBKR | Sale | 1,303 | 39.09 | 50,940 |
| 2015-09-17 | IBKR | Sale | 1,302 | 39.77 | 51,780 |
| 2015-09-16 | IBKR | Sale | 1,303 | 39.09 | 50,940 |
| 2015-09-17 | IBKR | Sale | 1,302 | 39.77 | 51,780 |
| 2015-09-14 | IBKR | Sale | 1,303 | 38.06 | 49,592 |
| 2015-09-15 | IBKR | Sale | 1,273 | 38.49 | 48,997 |
| 2015-09-10 | IBKR | Sale | 1,302 | 38.23 | 49,775 |
| 2015-09-11 | IBKR | Sale | 1,259 | 38.00 | 47,842 |
| 2015-09-08 | IBKR | Sale | 1,302 | 38.15 | 49,671 |
| 2015-09-09 | IBKR | Sale | 1,263 | 38.80 | 49,004 |
| 2015-09-04 | IBKR | Sale | 1,293 | 37.29 | 48,215 |
| 2015-09-03 | IBKR | Sale | 1,302 | 38.08 | 49,573 |
| 2015-09-01 | IBKR | Sale | 1,303 | 38.92 | 50,719 |
| 2015-09-02 | IBKR | Sale | 1,288 | 38.04 | 48,999 |
| 2015-08-31 | IBKR | Sale | 1,212 | 39.95 | 48,413 |
| 2015-08-28 | IBKR | Sale | 1,302 | 40.05 | 52,145 |
| 2015-08-27 | IBKR | Sale | 1,303 | 39.27 | 51,168 |
| 2015-08-26 | IBKR | Sale | 1,248 | 37.50 | 46,800 |
| 2015-08-24 | IBKR | Sale | 1,263 | 37.03 | 46,765 |
| 2015-08-25 | IBKR | Sale | 1,255 | 37.91 | 47,577 |
| 2015-08-20 | IBKR | Sale | 1,303 | 41.04 | 53,475 |
| 2015-08-21 | IBKR | Sale | 1,302 | 39.45 | 51,357 |
| 2015-08-18 | IBKR | Sale | 1,303 | 42.42 | 55,273 |
| 2015-08-19 | IBKR | Sale | 1,291 | 41.91 | 54,105 |
| 2015-08-14 | IBKR | Sale | 1,295 | 41.80 | 54,130 |
| 2015-08-17 | IBKR | Sale | 1,266 | 42.24 | 53,475 |
| 2015-08-12 | IBKR | Sale | 1,302 | 41.15 | 53,577 |
| 2015-08-13 | IBKR | Sale | 1,303 | 41.73 | 54,374 |
| 2015-08-11 | IBKR | Sale | 1,281 | 42.15 | 53,994 |
| 2015-08-10 | IBKR | Sale | 1,302 | 43.11 | 56,129 |
| 2015-08-06 | IBKR | Sale | 1,302 | 43.16 | 56,194 |
| 2015-08-07 | IBKR | Sale | 1,303 | 42.55 | 55,442 |
| 2015-08-04 | IBKR | Sale | 1,288 | 43.79 | 56,401 |
| 2015-08-05 | IBKR | Sale | 1,245 | 43.89 | 54,643 |
| 2015-07-31 | IBKR | Sale | 1,302 | 40.33 | 52,509 |
| 2015-08-03 | IBKR | Sale | 1,299 | 41.60 | 54,042 |
| 2015-07-29 | IBKR | Sale | 1,302 | 41.16 | 53,590 |
| 2015-07-30 | IBKR | Sale | 1,137 | 40.99 | 46,605 |
| 2015-07-27 | IBKR | Sale | 1,251 | 41.32 | 51,691 |
| 2015-07-28 | IBKR | Sale | 1,256 | 41.53 | 52,161 |
| 2015-01-09 | IBKR | Sale | 455 | 29.24 | 13,304 |
| 2015-01-08 | IBKR | Sale | 2,171 | 29.35 | 63,718 |
| 2015-01-07 | IBKR | Sale | 2,135 | 28.65 | 61,167 |
| 2015-01-05 | IBKR | Sale | 2,112 | 28.89 | 61,015 |
| 2015-01-06 | IBKR | Sale | 2,194 | 28.68 | 62,923 |
| 2014-12-31 | IBKR | Sale | 2,157 | 29.34 | 63,286 |
| 2015-01-02 | IBKR | Sale | 2,120 | 28.84 | 61,140 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Nemser Earl H (Vice Chairman of Interactive Brokers Group, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.