Themelis Nicholas, officer (Chief Information Officer) of MKTX - Past Performance as of 10/01/20. Total 62 Records. Link to Thomson Financial
Buy(P) /
Sell(S)		 P/S date Filed Date Company Symbol Insider Relationship Share Amt. Unit Price Total Proceeds Shares Owned Return(1m) Details
S 2020-09-09 2020-09-10 16:31:39.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 524 $459.65 $240,857.00 30,192 view
S 2020-09-09 2020-09-10 16:31:39.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 200 $458.48 $91,696.00 30,716 view
S 2020-09-09 2020-09-10 16:31:39.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,779 $457.69 $814,230.00 30,916 view
S 2020-09-09 2020-09-10 16:31:39.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 745 $456.45 $340,055.00 32,695 view
S 2020-09-09 2020-09-10 16:31:39.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 201 $455.08 $91,471.10 33,440 view
S 2020-09-09 2020-09-10 16:31:39.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 351 $453.47 $159,168.00 33,641 view
S 2020-09-09 2020-09-10 16:31:39.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 200 $450.90 $90,180.00 33,992 view
S 2020-05-08 2020-05-12 16:09:55.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,405 $482.84 $678,390.00 34,192 view
S 2020-05-08 2020-05-12 16:09:55.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 314 $479.66 $150,613.00 35,597 view
S 2020-05-08 2020-05-12 16:09:55.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 438 $478.86 $209,741.00 35,911 view
S 2020-05-08 2020-05-12 16:09:55.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 988 $477.92 $472,185.00 36,349 view
S 2020-05-08 2020-05-12 16:09:55.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 855 $476.85 $407,707.00 37,337 view
S 2020-02-10 2020-02-12 16:19:03.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 4,000 $342.01 $1,368,040.00 38,451 view
S 2019-11-08 2019-11-12 17:25:40.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,300 $348.60 $453,180.00 48,014 view
S 2019-11-08 2019-11-12 17:25:40.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,500 $347.87 $521,805.00 49,314 view
S 2019-11-08 2019-11-12 17:25:40.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,200 $349.72 $419,664.00 46,814 view
S 2019-08-08 2019-08-09 16:16:34.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 330 $349.36 $115,289.00 50,814 view
S 2019-08-08 2019-08-09 16:16:34.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,120 $348.46 $390,275.00 51,144 view
S 2019-08-08 2019-08-09 16:16:34.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 300 $347.10 $104,130.00 52,264 view
S 2019-08-08 2019-08-09 16:16:34.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 500 $346.09 $173,045.00 52,564 view
S 2019-08-08 2019-08-09 16:16:34.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 500 $345.14 $172,570.00 53,064 view
S 2019-04-26 2019-04-29 16:03:34.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,489 $265.61 $395,495.00 53,564 view
S 2018-08-14 2018-08-16 16:06:45.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,437 $187.01 $268,729.00 41,896 view
S 2018-08-14 2018-08-16 16:06:45.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 11,394 $186.45 $2,124,360.00 43,333 view
S 2018-03-09 2018-03-12 17:05:25.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 1,311 $219.43 $287,666.00 54,727 view
S 2018-03-09 2018-03-12 17:05:25.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 990 $218.90 $216,712.00 56,038 view
S 2018-03-09 2018-03-12 17:05:25.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 899 $218.16 $196,129.00 57,028 view
S 2018-03-09 2018-03-12 17:05:25.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 2,200 $216.95 $477,292.00 57,927 view
S 2017-11-02 2017-11-03 16:07:07.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 4,000 $176.40 $705,608.00 61,717 view
S 2017-06-09 2017-06-12 16:46:57.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 2,310 $201.01 $464,325.00 62,667 view
S 2017-06-09 2017-06-12 16:46:57.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 500 $202.01 $101,005.00 62,167 view
S 2017-06-09 2017-06-12 16:46:57.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 2,786 $200.50 $558,591.00 64,977 view
S 2017-02-09 2017-02-10 16:08:21.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 2,606 $189.07 $492,704.00 62,167 N/A view
S 2017-02-09 2017-02-10 16:08:21.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 5,560 $188.17 $1,046,220.00 64,773 N/A view
S 2017-02-09 2017-02-10 16:08:21.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 2,302 $187.29 $431,139.00 70,333 N/A view
S 2016-08-23 2016-08-23 16:25:35.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 5,745 $165.40 $950,223.00 65,054 N/A view
S 2016-08-22 2016-08-23 16:25:35.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 455 $165.46 $75,284.30 70,799 N/A view
S 2016-02-03 2016-02-04 16:11:17.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 5,183 $113.77 $589,683.00 72,181 N/A view
S 2016-02-03 2016-02-04 16:11:17.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 5,500 $113.75 $625,625.00 77,364 N/A view
S 2015-02-10 2015-02-10 17:59:08.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 5,000 $80.70 $403,500.00 70,296 -4.78% view
S 2015-02-09 2015-02-10 17:59:08.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 2,919 $80.03 $233,606.00 75,296 -6.55% view
S 2015-02-09 2015-02-10 17:59:08.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 2,000 $81.00 $162,000.00 78,215 -5.27% view
S 2014-08-21 2014-08-22 16:31:11.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 11,000 $57.58 $633,350.00 56,791 -7.25% view
S 2013-11-19 2013-11-21 19:20:55.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 20,418 $68.39 $1,396,400.00 64,685 7.25% view
S 2013-11-19 2013-11-21 19:20:55.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 400 $69.02 $27,608.00 64,285 8.10% view
S 2013-11-20 2013-11-21 19:20:55.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 6,659 $68.30 $454,817.00 64,285 3.76% view
S 2013-05-16 2013-05-20 18:01:43.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 17,000 $45.89 $780,069.00 64,285 -1.40% view
S 2012-12-13 2012-12-14 21:01:48.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 41,749 $32.24 $1,345,820.00 79,491 -7.92% view
S 2012-12-12 2012-12-12 21:04:28.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 16,904 $32.63 $551,579.00 79,491 -6.62% view
S 2012-12-11 2012-12-12 21:04:28.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 16,278 $32.48 $528,651.00 79,491 -7.12% view
S 2012-12-10 2012-12-12 21:04:28.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 15,069 $32.67 $492,264.00 79,491 -8.21% view
S 2011-11-07 2011-11-08 21:29:59.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 15,596 $28.26 $440,743.00 84,751 -1.88% view
S 2011-11-07 2011-11-08 21:29:59.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 5,605 $28.78 $161,312.00 100,347 -0.03% view
S 2011-11-04 2011-11-08 21:29:59.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 4,961 $29.40 $145,853.00 100,347 1.80% view
S 2011-11-04 2011-11-08 21:29:59.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 71,908 $28.54 $2,052,250.00 105,308 -1.16% view
S 2011-03-08 2011-03-09 16:31:36.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 19,000 $22.21 $421,990.00 100,347 -12.52% view
S 2011-03-07 2011-03-09 16:31:36.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 11,000 $22.05 $242,550.00 119,347 -14.38% view
S 2010-11-12 2010-11-15 18:38:18.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 25,000 $18.51 $462,722.00 119,895 -1.73% view
S 2010-02-24 2010-02-26 18:22:16.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 3,838 $15.39 $59,048.00 156,057 -4.32% view
S 2010-02-25 2010-02-26 18:22:16.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 11,162 $15.09 $168,489.00 144,895 -6.06% view
P 2008-11-04 2008-11-05 17:38:47.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 4,000 $5.00 $20,000.00 64,730 12.00% view
P 2008-11-03 2008-11-05 17:38:47.0 MARKETAXESS HOLDINGS INC MKTX Themelis Nicholas officer (Chief Information Officer) 4,000 $5.50 $22,000.00 60,730 8.91% view
* Filed by insider as open market transaction, but marked as private transaction by insidercow's proprietary method