MARKETAXESS HLDGS INC

Ticker: MKTX CUSIP: 57060D108 Class: COM

Aperio Group, LLC's Holding History (CIK: 0001364615)

Note: Option positions (PUT/CALL) are excluded.

Q4 2020

Shares 32,508 Value ($000) $18,548 Avg Close $513.28 Range $445.05 - $571.70

Q3 2020

Shares 32,557 Value ($000) $15,679 Avg Close $465.37 Range $409.02 - $528.32

Q2 2020

Shares 33,809 Value ($000) $16,936 Avg Close $438.02 Range $297.02 - $495.82

Q1 2020

Shares 28,647 Value ($000) $9,527 Avg Close $327.01 Range $258.83 - $365.21

Q4 2019

Shares 34,258 Value ($000) $12,988 Avg Close $343.80 Range $297.75 - $386.27

Q3 2019

Shares 36,024 Value ($000) $11,798 Avg Close $335.01 Range $297.39 - $394.69

Q2 2019

Shares 21,650 Value ($000) $6,958 Avg Close $270.14 Range $225.08 - $320.72

Q1 2019

Shares 19,586 Value ($000) $4,820 Avg Close $211.23 Range $192.59 - $233.31

Q4 2018

Shares 19,101 Value ($000) $4,037 Avg Close $192.62 Range $159.95 - $215.45

Q3 2018

Shares 14,996 Value ($000) $2,677 Avg Close $178.37 Range $164.65 - $196.55

Q2 2018

Shares 18,060 Value ($000) $3,574 Avg Close $192.09 Range $180.81 - $204.01

Q1 2018

Shares 18,559 Value ($000) $4,035 Avg Close $190.22 Range $171.07 - $212.71

Q4 2017

Shares 17,412 Value ($000) $3,513 Avg Close $174.10 Range $158.03 - $190.10

Q3 2017

Shares 17,946 Value ($000) $3,311 Avg Close $176.21 Range $159.36 - $192.97

Q2 2017

Shares 17,361 Value ($000) $3,491 Avg Close $176.15 Range $163.16 - $194.23

Q1 2017

Shares 18,142 Value ($000) $3,401 Avg Close $166.41 Range $135.53 - $184.55

Q4 2016

Shares 17,688 Value ($000) $2,599 Avg Close $145.60 Range $133.06 - $158.12

Q3 2016

Shares 14,903 Value ($000) $2,468 Avg Close $148.56 Range $129.96 - $163.14

Q2 2016

Shares 14,243 Value ($000) $2,071 Avg Close $121.40 Range $107.26 - $133.06

Q1 2016

Shares 13,884 Value ($000) $1,733 Avg Close $104.04 Range $89.17 - $116.19

Q4 2015

Shares 12,773 Value ($000) $1,425 Avg Close $92.99 Range $78.27 - $105.44

Q3 2015

Shares 10,338 Value ($000) $960 Avg Close $87.71 Range $79.52 - $94.87

Q2 2015

Shares 9,931 Value ($000) $921 Avg Close $79.87 Range $74.17 - $89.60

Q1 2015

Shares 10,085 Value ($000) $836 Avg Close $71.51 Range $59.68 - $80.40

Q4 2014

Shares 9,177 Value ($000) $658 Avg Close $59.29 Range $54.38 - $66.53

Q3 2014

Shares 7,114 Value ($000) $440 Avg Close $50.63 Range $42.39 - $56.56

Q2 2014

Shares 6,836 Value ($000) $370 Avg Close $48.96 Range $44.53 - $53.88

Q1 2014

Shares 3,728 Value ($000) $221 Avg Close $55.22 Range $51.55 - $60.27

Q4 2013

Shares 3,574 Value ($000) $239 Avg Close $58.63 Range $53.33 - $63.89

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	32,508	$18,548	$513.28	$445.05 - $571.70
Q3 2020	32,557	$15,679	$465.37	$409.02 - $528.32
Q2 2020	33,809	$16,936	$438.02	$297.02 - $495.82
Q1 2020	28,647	$9,527	$327.01	$258.83 - $365.21
Q4 2019	34,258	$12,988	$343.80	$297.75 - $386.27
Q3 2019	36,024	$11,798	$335.01	$297.39 - $394.69
Q2 2019	21,650	$6,958	$270.14	$225.08 - $320.72
Q1 2019	19,586	$4,820	$211.23	$192.59 - $233.31
Q4 2018	19,101	$4,037	$192.62	$159.95 - $215.45
Q3 2018	14,996	$2,677	$178.37	$164.65 - $196.55
Q2 2018	18,060	$3,574	$192.09	$180.81 - $204.01
Q1 2018	18,559	$4,035	$190.22	$171.07 - $212.71
Q4 2017	17,412	$3,513	$174.10	$158.03 - $190.10
Q3 2017	17,946	$3,311	$176.21	$159.36 - $192.97
Q2 2017	17,361	$3,491	$176.15	$163.16 - $194.23
Q1 2017	18,142	$3,401	$166.41	$135.53 - $184.55
Q4 2016	17,688	$2,599	$145.60	$133.06 - $158.12
Q3 2016	14,903	$2,468	$148.56	$129.96 - $163.14
Q2 2016	14,243	$2,071	$121.40	$107.26 - $133.06
Q1 2016	13,884	$1,733	$104.04	$89.17 - $116.19
Q4 2015	12,773	$1,425	$92.99	$78.27 - $105.44
Q3 2015	10,338	$960	$87.71	$79.52 - $94.87
Q2 2015	9,931	$921	$79.87	$74.17 - $89.60
Q1 2015	10,085	$836	$71.51	$59.68 - $80.40
Q4 2014	9,177	$658	$59.29	$54.38 - $66.53
Q3 2014	7,114	$440	$50.63	$42.39 - $56.56
Q2 2014	6,836	$370	$48.96	$44.53 - $53.88
Q1 2014	3,728	$221	$55.22	$51.55 - $60.27
Q4 2013	3,574	$239	$58.63	$53.33 - $63.89