MARKETAXESS HLDGS INC

Ticker: MKTX CUSIP: 57060D108 Class: COM

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO's Holding History (CIK: 0000315297)

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

Q4 2025

Shares 3,908 Value ($000) $1 Avg Close $169.50 Range $154.80 - $183.58

Q3 2025

Shares 3,908 Value ($000) $1 Avg Close $193.45 Range $172.51 - $222.19

Q2 2025

Shares 63,119 Value ($000) $14 Avg Close $216.56 Range $190.86 - $229.08

Q1 2025

Shares 63,186 Value ($000) $14 Avg Close $206.23 Range $183.82 - $224.26

Q4 2024

Shares 63,186 Value ($000) $14 Avg Close $257.54 Range $220.08 - $289.94

Q3 2024

Shares 52,986 Value ($000) $14 Avg Close $228.65 Range $187.70 - $258.10

Q2 2024

Shares 53,118 Value ($000) $11 Avg Close $200.47 Range $187.45 - $222.81

Q1 2024

Shares 53,290 Value ($000) $12 Avg Close $228.96 Range $194.52 - $282.26

Q4 2023

Shares 53,789 Value ($000) $16 Avg Close $233.72 Range $195.99 - $288.33

Q3 2023

Shares 54,276 Value ($000) $12 Avg Close $233.55 Range $192.90 - $268.22

Q2 2023

Shares 54,214 Value ($000) $14 Avg Close $286.65 Range $245.65 - $383.62

Q1 2023

Shares 54,214 Value ($000) $21 Avg Close $339.53 Range $266.01 - $381.21

Q4 2022

Shares 45,251 Value ($000) $13 Avg Close $246.25 Range $210.55 - $283.35

Q3 2022

Shares 45,251 Value ($000) $10,068 Avg Close $244.83 Range $207.63 - $267.12

Q2 2022

Shares 45,251 Value ($000) $11,585 Avg Close $260.22 Range $237.15 - $332.85

Q1 2022

Shares 45,251 Value ($000) $15,394 Avg Close $344.01 Range $304.48 - $391.34

Q4 2021

Shares 47,436 Value ($000) $19,509 Avg Close $373.74 Range $323.75 - $410.92

Q3 2021

Shares 49,539 Value ($000) $20,841 Avg Close $434.10 Range $386.93 - $472.28

Q2 2021

Shares 51,187 Value ($000) $23,730 Avg Close $449.61 Range $407.56 - $515.46

Q1 2021

Shares 51,187 Value ($000) $25,487 Avg Close $503.06 Range $444.56 - $555.48

Q4 2020

Shares 53,287 Value ($000) $30,403 Avg Close $513.28 Range $445.05 - $571.70

Q3 2020

Shares 59,844 Value ($000) $28,820 Avg Close $465.37 Range $409.02 - $528.32

Q2 2020

Shares 60,910 Value ($000) $30,511 Avg Close $438.02 Range $297.02 - $495.82

Q1 2020

Shares 60,910 Value ($000) $20,257 Avg Close $327.01 Range $258.83 - $365.21

Q4 2019

Shares 60,810 Value ($000) $23,054 Avg Close $343.80 Range $297.75 - $386.27

Q3 2019

Shares 60,810 Value ($000) $19,915 Avg Close $335.01 Range $297.39 - $394.69

Q2 2019

Shares 126,064 Value ($000) $40,519 Avg Close $270.14 Range $225.08 - $320.72

Q1 2019

Shares 140,485 Value ($000) $34,571 Avg Close $211.23 Range $192.59 - $233.31

Q4 2018

Shares 95,622 Value ($000) $20,206 Avg Close $192.62 Range $159.95 - $215.45

Q3 2018

Shares 145,637 Value ($000) $25,995 Avg Close $178.37 Range $164.65 - $196.55

Q2 2018

Shares 133,244 Value ($000) $26,364 Avg Close $192.09 Range $180.81 - $204.01

Q1 2018

Shares 124,365 Value ($000) $27,042 Avg Close $190.22 Range $171.07 - $212.71

Q4 2017

Shares 124,789 Value ($000) $25,176 Avg Close $174.10 Range $158.03 - $190.10

Q3 2017

Shares 124,556 Value ($000) $22,982 Avg Close $176.21 Range $159.36 - $192.97

Q2 2017

Shares 124,588 Value ($000) $25,055 Avg Close $176.15 Range $163.16 - $194.23

Q1 2017

Shares 124,596 Value ($000) $23,361 Avg Close $166.41 Range $135.53 - $184.55

Q4 2016

Shares 125,126 Value ($000) $18,384 Avg Close $145.60 Range $133.06 - $158.12

Q3 2016

Shares 125,746 Value ($000) $20,822 Avg Close $148.56 Range $129.96 - $163.14

Q2 2016

Shares 174,211 Value ($000) $25,330 Avg Close $121.40 Range $107.26 - $133.06

Q1 2016

Shares 366,230 Value ($000) $45,716 Avg Close $104.04 Range $89.17 - $116.19

Q4 2015

Shares 275,214 Value ($000) $30,711 Avg Close $92.99 Range $78.27 - $105.44

Q3 2015

Shares 275,214 Value ($000) $25,562 Avg Close $87.71 Range $79.52 - $94.87

Q2 2015

Shares 275,214 Value ($000) $25,532 Avg Close $79.87 Range $74.17 - $89.60

Q1 2015

Shares 276,405 Value ($000) $22,914 Avg Close $71.51 Range $59.68 - $80.40

Q4 2014

Shares 277,690 Value ($000) $19,913 Avg Close $59.29 Range $54.38 - $66.53

Q3 2014

Shares 277,690 Value ($000) $17,178 Avg Close $50.63 Range $42.39 - $56.56

Q2 2014

Shares 279,261 Value ($000) $15,097 Avg Close $48.96 Range $44.53 - $53.88

Q1 2014

Shares 280,152 Value ($000) $16,591 Avg Close $55.22 Range $51.55 - $60.27

Q4 2013

Shares 280,152 Value ($000) $18,734 Avg Close $58.63 Range $53.33 - $63.89

Q3 2013

Shares 264,400 Value ($000) $15,875 Avg Close $47.53 Range $41.58 - $55.43

Q2 2013

Shares 264,400 Value ($000) $12,361 Avg Close $38.12 Range $32.31 - $42.94

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,908	$1	$169.50	$154.80 - $183.58
Q3 2025	3,908	$1	$193.45	$172.51 - $222.19
Q2 2025	63,119	$14	$216.56	$190.86 - $229.08
Q1 2025	63,186	$14	$206.23	$183.82 - $224.26
Q4 2024	63,186	$14	$257.54	$220.08 - $289.94
Q3 2024	52,986	$14	$228.65	$187.70 - $258.10
Q2 2024	53,118	$11	$200.47	$187.45 - $222.81
Q1 2024	53,290	$12	$228.96	$194.52 - $282.26
Q4 2023	53,789	$16	$233.72	$195.99 - $288.33
Q3 2023	54,276	$12	$233.55	$192.90 - $268.22
Q2 2023	54,214	$14	$286.65	$245.65 - $383.62
Q1 2023	54,214	$21	$339.53	$266.01 - $381.21
Q4 2022	45,251	$13	$246.25	$210.55 - $283.35
Q3 2022	45,251	$10,068	$244.83	$207.63 - $267.12
Q2 2022	45,251	$11,585	$260.22	$237.15 - $332.85
Q1 2022	45,251	$15,394	$344.01	$304.48 - $391.34
Q4 2021	47,436	$19,509	$373.74	$323.75 - $410.92
Q3 2021	49,539	$20,841	$434.10	$386.93 - $472.28
Q2 2021	51,187	$23,730	$449.61	$407.56 - $515.46
Q1 2021	51,187	$25,487	$503.06	$444.56 - $555.48
Q4 2020	53,287	$30,403	$513.28	$445.05 - $571.70
Q3 2020	59,844	$28,820	$465.37	$409.02 - $528.32
Q2 2020	60,910	$30,511	$438.02	$297.02 - $495.82
Q1 2020	60,910	$20,257	$327.01	$258.83 - $365.21
Q4 2019	60,810	$23,054	$343.80	$297.75 - $386.27
Q3 2019	60,810	$19,915	$335.01	$297.39 - $394.69
Q2 2019	126,064	$40,519	$270.14	$225.08 - $320.72
Q1 2019	140,485	$34,571	$211.23	$192.59 - $233.31
Q4 2018	95,622	$20,206	$192.62	$159.95 - $215.45
Q3 2018	145,637	$25,995	$178.37	$164.65 - $196.55
Q2 2018	133,244	$26,364	$192.09	$180.81 - $204.01
Q1 2018	124,365	$27,042	$190.22	$171.07 - $212.71
Q4 2017	124,789	$25,176	$174.10	$158.03 - $190.10
Q3 2017	124,556	$22,982	$176.21	$159.36 - $192.97
Q2 2017	124,588	$25,055	$176.15	$163.16 - $194.23
Q1 2017	124,596	$23,361	$166.41	$135.53 - $184.55
Q4 2016	125,126	$18,384	$145.60	$133.06 - $158.12
Q3 2016	125,746	$20,822	$148.56	$129.96 - $163.14
Q2 2016	174,211	$25,330	$121.40	$107.26 - $133.06
Q1 2016	366,230	$45,716	$104.04	$89.17 - $116.19
Q4 2015	275,214	$30,711	$92.99	$78.27 - $105.44
Q3 2015	275,214	$25,562	$87.71	$79.52 - $94.87
Q2 2015	275,214	$25,532	$79.87	$74.17 - $89.60
Q1 2015	276,405	$22,914	$71.51	$59.68 - $80.40
Q4 2014	277,690	$19,913	$59.29	$54.38 - $66.53
Q3 2014	277,690	$17,178	$50.63	$42.39 - $56.56
Q2 2014	279,261	$15,097	$48.96	$44.53 - $53.88
Q1 2014	280,152	$16,591	$55.22	$51.55 - $60.27
Q4 2013	280,152	$18,734	$58.63	$53.33 - $63.89
Q3 2013	264,400	$15,875	$47.53	$41.58 - $55.43
Q2 2013	264,400	$12,361	$38.12	$32.31 - $42.94