Themelis Nicholas

Insider CIK 1296468 · MKTX Chief Information Officer

Track record PRO

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Track record

See how this insider's past purchases performed 30 and 90 days later, and a conviction score on each buy.

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Trades across companies

Ticker	Code	Trade	Filed	Shares	Price	Value	Owned after
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	325	$370.37	$120.4K	8,682	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	212	$361.91	$76.7K	9,701	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	424	$358.18	$151.9K	10,120	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	98	$359.18	$35.2K	10,022	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	138	$371.38	$51.3K	8,544	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	109	$361.01	$39.4K	9,913	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	171	$368.87	$63.1K	9,007	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	315	$367.42	$115.7K	9,178	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	200	$366.39	$73.3K	9,493	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2022-03-07	2022-03-09	8	$365.16	$2.9K	9,693	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2022-01-31	2022-02-02	159	$344.48	$54.8K	10,818	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2022-01-31	2022-02-02	274	$344.48	$94.4K	10,544	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2022-01-31	2022-02-02	1,840	—	$0	11,427	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2022-01-31	2022-02-02	237	$344.48	$81.6K	11,190	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2022-01-31	2022-02-02	154	$344.48	$53.0K	11,036	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2022-01-31	2022-02-02	59	$344.48	$20.3K	10,977	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-12-07	2021-12-09	500	$371.45	$185.7K	9,909	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-12-07	2021-12-09	322	$372.75	$120.0K	9,587	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-12-07	2021-12-09	578	$370.57	$214.2K	10,409	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-12-07	2021-12-09	200	$364.28	$72.9K	11,387	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-12-07	2021-12-09	300	$368.90	$110.7K	10,987	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-12-07	2021-12-09	100	$366.99	$36.7K	11,287	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-09-07	2021-09-09	200	$466.01	$93.2K	11,787	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-09-07	2021-09-09	100	$456.85	$45.7K	13,487	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-09-07	2021-09-09	800	$458.58	$366.9K	12,687	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-09-07	2021-09-09	500	$460.36	$230.2K	12,187	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-09-07	2021-09-09	100	$461.31	$46.1K	12,087	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-09-07	2021-09-09	100	$463.33	$46.3K	11,987	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-09-07	2021-09-09	200	$473.40	$94.7K	11,587	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2021-08-11	2021-08-12	6,433	—	$0	0	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	1,179	$460.06	$542.4K	18,841	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	152	$470.46	$71.5K	13,587	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	135	$468.88	$63.3K	13,739	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2021-08-11	2021-08-12	6,433	$103.30	$664.5K	20,020	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	376	$468.22	$176.1K	13,874	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	347	$466.45	$161.9K	14,250	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	90	$465.64	$41.9K	14,597	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	502	$464.71	$233.3K	14,687	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	1,266	$462.93	$586.1K	15,189	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	654	$462.13	$302.2K	16,455	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-08-11	2021-08-12	1,732	$460.70	$797.9K	17,109	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2021-06-14	2021-06-15	7,000	—	$0	6,433	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-14	2021-06-15	4,713	$448.40	$2.11M	15,874	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2021-06-14	2021-06-15	7,000	$103.30	$723.1K	20,587	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-14	2021-06-15	2,287	$449.13	$1.03M	13,587	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-07	2021-06-08	441	$445.57	$196.5K	14,854	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-07	2021-06-08	1,043	$443.40	$462.5K	16,159	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-07	2021-06-08	385	$442.52	$170.4K	17,202	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-07	2021-06-08	315	$448.51	$141.3K	13,587	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-07	2021-06-08	864	$444.34	$383.9K	15,295	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-07	2021-06-08	464	$447.47	$207.6K	13,902	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-06-07	2021-06-08	488	$446.42	$217.9K	14,366	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-03-05	2021-03-08	103	$481.01	$49.5K	18,187	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-03-05	2021-03-08	352	$479.78	$168.9K	18,290	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-03-05	2021-03-08	300	$483.63	$145.1K	17,887	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-03-05	2021-03-08	300	$488.10	$146.4K	17,587	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-03-05	2021-03-08	900	$474.60	$427.1K	20,687	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-03-05	2021-03-08	1,206	$476.36	$574.5K	19,481	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-03-05	2021-03-08	639	$477.04	$304.8K	18,842	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2021-03-05	2021-03-08	200	$478.19	$95.6K	18,642	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	228	$540.76	$123.3K	27,309	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	11	$540.76	$5.9K	21,587	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	147	$540.76	$79.5K	21,598	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	226	$540.76	$122.2K	23,867	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	173	$540.76	$93.6K	24,093	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	2,830	$540.76	$1.53M	24,266	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	56	$540.76	$30.3K	27,096	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	157	$540.76	$84.9K	27,152	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	2,122	$540.76	$1.15M	21,745	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2021-01-31	2021-02-02	227	$540.76	$122.8K	27,537	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2021-01-15	2021-01-20	1,572	—	$0	27,764	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-12-07	2020-12-09	305	$546.31	$166.6K	27,892	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-12-07	2020-12-09	1,464	$545.14	$798.1K	28,197	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-12-07	2020-12-09	531	$544.04	$288.9K	29,661	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-12-07	2020-12-09	530	$547.34	$290.1K	26,665	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-12-07	2020-12-09	697	$548.21	$382.1K	27,195	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-12-07	2020-12-09	410	$549.59	$225.3K	26,255	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-12-07	2020-12-09	63	$553.10	$34.8K	26,192	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2020-10-29	2020-10-30	3,830	—	$0	0	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2020-10-29	2020-10-30	13,432	—	$0	13,433	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2020-10-29	2020-10-30	3,830	$156.85	$600.7K	47,454	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2020-10-29	2020-10-30	13,432	$103.30	$1.39M	43,624	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-10-29	2020-10-30	5,598	$557.81	$3.12M	30,192	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-10-29	2020-10-30	200	$551.27	$110.3K	47,254	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-10-29	2020-10-30	1,440	$552.06	$795.0K	45,814	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-10-29	2020-10-30	600	$556.69	$334.0K	35,790	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-10-29	2020-10-30	100	$554.23	$55.4K	36,390	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-10-29	2020-10-30	9,324	$553.21	$5.16M	36,490	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-09-09	2020-09-10	524	$459.65	$240.9K	30,192	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-09-09	2020-09-10	200	$458.48	$91.7K	30,716	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-09-09	2020-09-10	1,779	$457.69	$814.2K	30,916	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-09-09	2020-09-10	745	$456.45	$340.1K	32,695	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-09-09	2020-09-10	201	$455.08	$91.5K	33,440	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-09-09	2020-09-10	351	$453.47	$159.2K	33,641	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-09-09	2020-09-10	200	$450.90	$90.2K	33,992	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-05-08	2020-05-12	1,405	$482.84	$678.4K	34,192	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-05-08	2020-05-12	314	$479.66	$150.6K	35,597	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-05-08	2020-05-12	438	$478.86	$209.7K	35,911	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-05-08	2020-05-12	988	$477.92	$472.2K	36,349	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-05-08	2020-05-12	855	$476.85	$407.7K	37,337	SEC↗
MKTX MARKETAXESS HOLDINGS INC	G Gift	2020-04-08	2020-04-10	259	—	$0	38,192	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2020-02-10	2020-02-12	4,000	$342.01	$1.37M	38,451	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	199	$354.18	$70.5K	43,323	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	158	$354.18	$56.0K	43,522	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	2,122	$354.18	$751.6K	43,680	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	173	$354.18	$61.3K	42,462	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	11	$354.18	$3.9K	42,451	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	226	$354.18	$80.0K	43,097	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	228	$354.18	$80.8K	42,869	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	234	$354.18	$82.9K	42,635	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2020-01-31	2020-02-04	2,829	$354.18	$1.00M	45,802	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2020-01-29	2020-01-29	830	—	$0	48,631	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2020-01-29	2020-01-29	44	—	$0	47,801	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2020-01-15	2020-01-17	943	—	$0	47,757	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-11-08	2019-11-12	1,200	$349.72	$419.7K	46,814	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-11-08	2019-11-12	1,300	$348.60	$453.2K	48,014	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-11-08	2019-11-12	1,500	$347.87	$521.8K	49,314	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-08-08	2019-08-09	300	$347.10	$104.1K	52,264	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-08-08	2019-08-09	1,120	$348.46	$390.3K	51,144	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-08-08	2019-08-09	500	$346.09	$173.0K	52,564	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-08-08	2019-08-09	500	$345.14	$172.6K	53,064	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-08-08	2019-08-09	330	$349.36	$115.3K	50,814	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2019-04-26	2019-04-29	1,489	$265.61	$395.5K	53,564	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2019-02-21	2019-02-21	12,260	—	$0	55,053	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2019-01-31	2019-02-04	323	$214.77	$69.4K	43,905	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2019-01-31	2019-02-04	930	—	$0	44,228	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2019-01-31	2019-02-04	127	$214.77	$27.3K	43,778	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2019-01-31	2019-02-04	396	$214.77	$85.0K	43,382	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2019-01-31	2019-02-04	198	$214.77	$42.5K	43,184	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2019-01-31	2019-02-04	158	$214.77	$33.9K	43,026	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2019-01-31	2019-02-04	233	$214.77	$50.0K	42,793	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2019-01-15	2019-01-17	1,402	—	$0	43,298	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2018-08-14	2018-08-16	1,437	$187.01	$268.7K	41,896	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2018-08-14	2018-08-16	11,394	$186.45	$2.12M	43,333	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2018-03-09	2018-03-12	1,311	$219.42	$287.7K	54,727	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2018-03-09	2018-03-12	990	$218.90	$216.7K	56,038	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2018-03-09	2018-03-12	899	$218.16	$196.1K	57,028	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2018-03-09	2018-03-12	2,200	$216.95	$477.3K	57,927	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2018-01-31	2018-02-02	1,340	$196.21	$262.9K	59,876	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2018-01-31	2018-02-02	1,094	$196.21	$214.7K	62,018	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2018-01-31	2018-02-02	809	—	$0	60,127	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2018-01-31	2018-02-02	162	$196.21	$31.8K	59,318	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2018-01-31	2018-02-02	396	$196.21	$77.7K	59,480	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2018-01-31	2018-02-02	127	$196.21	$24.9K	61,216	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2018-01-31	2018-02-02	323	$196.21	$63.4K	61,343	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2018-01-31	2018-02-02	352	$196.21	$69.1K	61,666	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2018-01-15	2018-01-17	1,395	—	$0	63,112	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2017-11-02	2017-11-03	4,000	—	$0	0	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2017-11-02	2017-11-03	4,000	$176.40	$705.6K	61,717	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2017-11-02	2017-11-03	4,000	$10.93	$43.7K	65,717	SEC↗
MKTX MARKETAXESS HOLDINGS INC	G Gift	2017-08-01	2017-08-01	450	—	$0	61,717	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2017-06-09	2017-06-12	5,596	—	$0	4,000	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2017-06-09	2017-06-12	2,786	$200.50	$558.6K	64,977	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2017-06-09	2017-06-12	5,596	$10.93	$61.2K	67,763	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2017-06-09	2017-06-12	2,310	$201.01	$464.3K	62,667	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2017-06-09	2017-06-12	500	$202.01	$101.0K	62,167	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2017-02-09	2017-02-10	10,468	—	$0	9,596	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2017-02-09	2017-02-10	10,468	$10.93	$114.4K	72,635	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2017-02-09	2017-02-10	5,560	$188.17	$1.05M	64,773	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2017-02-09	2017-02-10	2,302	$187.29	$431.1K	70,333	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2017-02-09	2017-02-10	2,606	$189.07	$492.7K	62,167	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2017-01-31	2017-02-02	1,375	$187.25	$257.5K	65,530	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2017-01-31	2017-02-02	371	$187.25	$69.5K	64,007	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2017-01-31	2017-02-02	1,152	$187.25	$215.7K	64,378	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2017-01-31	2017-02-02	954	$187.25	$178.6K	66,905	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2017-01-31	2017-02-02	429	$187.25	$80.3K	62,167	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2017-01-31	2017-02-02	1,411	$187.25	$264.2K	62,596	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2017-01-25	2017-01-27	1,833	—	$0	67,859	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award deriv	2017-01-15	2017-01-18	3,830	—	$0	3,830	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2017-01-15	2017-01-18	972	—	$0	66,026	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2016-08-23	2016-08-23	5,745	$165.40	$950.2K	65,054	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2016-08-22	2016-08-23	455	$165.46	$75.3K	70,799	SEC↗
MKTX MARKETAXESS HOLDINGS INC	G Gift	2016-05-04	2016-05-05	825	—	$0	71,254	SEC↗
MKTX MARKETAXESS HOLDINGS INC	G Gift	2016-04-29	2016-05-02	102	—	$0	72,079	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2016-02-03	2016-02-04	5,500	$113.75	$625.6K	77,364	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2016-02-03	2016-02-04	5,183	$113.77	$589.7K	72,181	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2016-01-31	2016-02-02	954	$116.23	$110.9K	85,693	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2016-01-31	2016-02-02	1,375	$116.23	$159.8K	84,318	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2016-01-31	2016-02-02	1,454	$116.23	$169.0K	82,864	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2016-01-29	2016-02-02	5,900	—	$0	86,647	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award deriv	2016-01-22	2016-01-25	26,865	—	$0	26,865	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2016-01-22	2016-01-25	8,666	—	$0	80,747	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2016-01-15	2016-01-20	2,183	$101.77	$222.2K	71,559	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2016-01-15	2016-01-20	2,446	—	$0	72,081	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2016-01-15	2016-01-20	1,924	$101.77	$195.8K	69,635	SEC↗
MKTX MARKETAXESS HOLDINGS INC	G Gift	2015-07-14	2015-07-16	250	—	$0	73,742	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2015-02-20	2015-02-20	3,696	—	$0	73,992	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2015-02-10	2015-02-10	5,000	$80.70	$403.5K	70,296	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2015-02-09	2015-02-10	2,919	$80.03	$233.6K	75,296	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2015-02-09	2015-02-10	2,000	$81.00	$162.0K	78,215	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-31	2015-02-02	1,416	$75.97	$107.6K	80,215	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2015-01-15	2015-01-20	8,290	—	$0	81,631	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-15	2015-01-20	143	$70.60	$10.1K	73,341	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-15	2015-01-20	1,781	$70.60	$125.7K	73,484	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-15	2015-01-20	2,183	$70.60	$154.1K	75,265	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-15	2015-01-20	1,358	$70.60	$95.9K	77,448	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-15	2015-01-20	1,818	$70.60	$128.4K	78,806	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2015-01-14	2015-01-16	1,403	—	$0	0	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2015-01-14	2015-01-16	8,646	—	$0	0	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2015-01-14	2015-01-16	15,786	—	$0	20,064	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2015-01-14	2015-01-16	1,403	$12.96	$18.2K	72,553	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2015-01-14	2015-01-16	8,646	$11.18	$96.7K	81,949	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-14	2015-01-16	1,325	$72.96	$96.7K	80,624	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-14	2015-01-16	250	$72.96	$18.2K	73,303	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2015-01-14	2015-01-16	15,786	$10.93	$172.5K	74,515	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2015-01-14	2015-01-16	2,365	$72.96	$172.6K	72,150	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2014-11-14	2014-11-14	2,538	$15.60	$39.6K	59,329	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2014-11-14	2014-11-14	600	$66.07	$39.6K	58,729	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2014-11-13	2014-11-14	2,538	—	$0	0	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2014-08-21	2014-08-22	11,000	$57.58	$633.4K	56,791	SEC↗
MKTX MARKETAXESS HOLDINGS INC	G Gift	2014-06-04	2014-06-06	238	—	$0	67,791	SEC↗
MKTX MARKETAXESS HOLDINGS INC	G Gift	2014-03-11	2014-03-13	156	—	$0	68,029	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2014-01-30	2014-01-31	7,457	—	$0	68,185	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2014-01-15	2014-01-23	8,075	—	$0	72,360	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2014-01-15	2014-01-23	11,632	$63.07	$733.6K	60,728	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2013-11-20	2013-11-21	6,659	—	$0	1,403	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2013-11-20	2013-11-21	6,659	$12.96	$86.3K	70,944	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2013-11-20	2013-11-21	6,659	$68.30	$454.8K	64,285	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2013-11-19	2013-11-21	20,818	—	$0	8,062	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2013-11-19	2013-11-21	20,418	$68.39	$1.40M	64,685	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2013-11-19	2013-11-21	400	$69.02	$27.6K	64,285	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2013-11-19	2013-11-21	20,818	$12.96	$269.8K	85,103	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2013-05-16	2013-05-20	17,000	$45.89	$780.1K	64,285	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2013-02-04	2013-02-06	5,264	—	$0	81,285	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2013-01-15	2013-01-17	12,823	—	$0	92,314	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2013-01-15	2013-01-17	16,293	$35.98	$586.2K	76,021	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2012-12-13	2012-12-14	41,749	—	$0	0	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2012-12-13	2012-12-14	41,749	$32.24	$1.35M	79,491	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2012-12-13	2012-12-14	41,749	$13.95	$582.4K	121,240	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2012-12-12	2012-12-12	16,904	—	$0	41,749	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2012-12-12	2012-12-12	16,904	$32.63	$551.6K	79,491	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2012-12-12	2012-12-12	16,904	$13.95	$235.8K	96,395	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2012-12-11	2012-12-12	16,278	—	$0	58,653	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2012-12-11	2012-12-12	16,278	$13.95	$227.1K	95,769	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2012-12-11	2012-12-12	16,278	$32.48	$528.7K	79,491	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2012-12-10	2012-12-12	25,069	—	$0	74,931	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2012-12-10	2012-12-12	25,069	$13.95	$349.7K	94,560	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2012-12-10	2012-12-12	15,069	$32.67	$492.3K	79,491	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2012-06-12	2012-06-13	32,379	—	$0	2,538	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2012-06-12	2012-06-13	32,379	$15.60	$505.1K	101,870	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2012-06-12	2012-06-13	32,379	$30.12	$975.3K	69,491	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise deriv	2012-06-11	2012-06-13	5,083	—	$0	34,917	SEC↗
MKTX MARKETAXESS HOLDINGS INC	S Sale	2012-06-11	2012-06-13	17,263	$30.50	$526.5K	69,491	SEC↗
MKTX MARKETAXESS HOLDINGS INC	M Exercise	2012-06-11	2012-06-13	5,083	$15.60	$79.3K	86,754	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2012-02-03	2012-02-09	11,613	—	$0	81,671	SEC↗
MKTX MARKETAXESS HOLDINGS INC	F Tax w/h	2012-01-15	2012-01-19	25,082	$30.64	$768.5K	70,058	SEC↗
MKTX MARKETAXESS HOLDINGS INC	A Award	2012-01-13	2012-01-19	10,569	—	$0	95,140	SEC↗