MARKETAXESS HLDGS INC

Ticker: MKTX CUSIP: 57060D108 Class: COM

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q4 2025

Shares 625,208 Value ($000) $113,319 Avg Close $169.50 Range $154.80 - $183.58

Q3 2025

Shares 310,086 Value ($000) $54,032 Avg Close $193.45 Range $172.51 - $222.19

Q2 2025

Shares 351,166 Value ($000) $78,429 Avg Close $216.56 Range $190.86 - $229.08

Q1 2025

Shares 474,345 Value ($000) $102,625 Avg Close $206.23 Range $183.82 - $224.26

Q4 2024

Shares 100,588 Value ($000) $22,737 Avg Close $257.54 Range $220.08 - $289.94

Q3 2024

Shares 219,125 Value ($000) $56,140 Avg Close $228.65 Range $187.70 - $258.10

Q2 2024

Shares 190,853 Value ($000) $38,272 Avg Close $200.47 Range $187.45 - $222.81

Q1 2024

Shares 299,458 Value ($000) $65,656 Avg Close $228.96 Range $194.52 - $282.26

Q4 2023

Shares 345,803 Value ($000) $101,268 Avg Close $233.72 Range $195.99 - $288.33

Q3 2023

Shares 104,001 Value ($000) $22,219 Avg Close $233.55 Range $192.90 - $268.22

Q2 2023

Shares 146,661 Value ($000) $38,340 Avg Close $286.65 Range $245.65 - $383.62

Q1 2023

Shares 36,173 Value ($000) $14,154 Avg Close $339.53 Range $266.01 - $381.21

Q4 2022

Shares 53,754 Value ($000) $14,991 Avg Close $246.25 Range $210.55 - $283.35

Q3 2022

Shares 310,881 Value ($000) $69,168 Avg Close $244.83 Range $207.63 - $267.12

Q2 2022

Shares 484,815 Value ($000) $124,118 Avg Close $260.22 Range $237.15 - $332.85

Q1 2022

Shares 285,378 Value ($000) $97,085 Avg Close $344.01 Range $304.48 - $391.34

Q4 2021

Shares 39,804 Value ($000) $16,370 Avg Close $373.74 Range $323.75 - $410.92

Q3 2021

Shares 51,463 Value ($000) $21,650 Avg Close $434.10 Range $386.93 - $472.28

Q2 2021

Shares 35,172 Value ($000) $16,305 Avg Close $449.61 Range $407.56 - $515.46

Q1 2021

Shares 47,485 Value ($000) $23,643 Avg Close $503.06 Range $444.56 - $555.48

Q4 2020

Shares 94,973 Value ($000) $54,188 Avg Close $513.28 Range $445.05 - $571.70

Q3 2020

Shares 156,179 Value ($000) $75,214 Avg Close $465.37 Range $409.02 - $528.32

Q2 2020

Shares 110,549 Value ($000) $55,377 Avg Close $438.02 Range $297.02 - $495.82

Q1 2020

Shares 212,497 Value ($000) $70,670 Avg Close $327.01 Range $258.83 - $365.21

Q4 2019

Shares 27,135 Value ($000) $10,287 Avg Close $343.80 Range $297.75 - $386.27

Q3 2019

Shares 81,868 Value ($000) $26,812 Avg Close $335.01 Range $297.39 - $394.69

Q2 2019

Shares 75,256 Value ($000) $24,189 Avg Close $270.14 Range $225.08 - $320.72

Q1 2019

Shares 3,836 Value ($000) $944 Avg Close $211.23 Range $192.59 - $233.31

Q4 2018

Shares 63,200 Value ($000) $13,354 Avg Close $192.62 Range $159.95 - $215.45

Q3 2018

Shares 1,446 Value ($000) $258 Avg Close $178.37 Range $164.65 - $196.55

Q2 2018

Shares 3,261 Value ($000) $645 Avg Close $192.09 Range $180.81 - $204.01

Q1 2018

Shares 6,862 Value ($000) $1,492 Avg Close $190.22 Range $171.07 - $212.71

Q4 2017

Shares 3,814 Value ($000) $769 Avg Close $174.10 Range $158.03 - $190.10

Q3 2017

Shares 89,943 Value ($000) $16,595 Avg Close $176.21 Range $159.36 - $192.97

Q2 2017

Shares 1,188 Value ($000) $239 Avg Close $176.15 Range $163.16 - $194.23

Q1 2017

Shares 5,577 Value ($000) $1,046 Avg Close $166.41 Range $135.53 - $184.55

Q4 2016

Shares 3,111 Value ($000) $457 Avg Close $145.60 Range $133.06 - $158.12

Q3 2016

Shares 4,257 Value ($000) $705 Avg Close $148.56 Range $129.96 - $163.14

Q2 2016

Shares 8,402 Value ($000) $1,222 Avg Close $121.40 Range $107.26 - $133.06

Q4 2015

Shares 1,468 Value ($000) $164 Avg Close $92.99 Range $78.27 - $105.44

Q3 2015

Shares 2,318 Value ($000) $215 Avg Close $87.71 Range $79.52 - $94.87

Q2 2015

Shares 23,657 Value ($000) $2,195 Avg Close $79.87 Range $74.17 - $89.60

Q1 2015

Shares 47,497 Value ($000) $3,937 Avg Close $71.51 Range $59.68 - $80.40

Q4 2014

Shares 1,097 Value ($000) $79 Avg Close $59.29 Range $54.38 - $66.53

Q3 2014

Shares 28,306 Value ($000) $1,751 Avg Close $50.63 Range $42.39 - $56.56

Q2 2014

Shares 36 Value ($000) $2 Avg Close $48.96 Range $44.53 - $53.88

Q1 2014

Shares 8,773 Value ($000) $520 Avg Close $55.22 Range $51.55 - $60.27

Q4 2013

Shares 8,269 Value ($000) $553 Avg Close $58.63 Range $53.33 - $63.89

Q3 2013

Shares 22,028 Value ($000) $1,322 Avg Close $47.53 Range $41.58 - $55.43

Q2 2013

Shares 46,696 Value ($000) $2,183 Avg Close $38.12 Range $32.31 - $42.94

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	625,208	$113,319	$169.50	$154.80 - $183.58
Q3 2025	310,086	$54,032	$193.45	$172.51 - $222.19
Q2 2025	351,166	$78,429	$216.56	$190.86 - $229.08
Q1 2025	474,345	$102,625	$206.23	$183.82 - $224.26
Q4 2024	100,588	$22,737	$257.54	$220.08 - $289.94
Q3 2024	219,125	$56,140	$228.65	$187.70 - $258.10
Q2 2024	190,853	$38,272	$200.47	$187.45 - $222.81
Q1 2024	299,458	$65,656	$228.96	$194.52 - $282.26
Q4 2023	345,803	$101,268	$233.72	$195.99 - $288.33
Q3 2023	104,001	$22,219	$233.55	$192.90 - $268.22
Q2 2023	146,661	$38,340	$286.65	$245.65 - $383.62
Q1 2023	36,173	$14,154	$339.53	$266.01 - $381.21
Q4 2022	53,754	$14,991	$246.25	$210.55 - $283.35
Q3 2022	310,881	$69,168	$244.83	$207.63 - $267.12
Q2 2022	484,815	$124,118	$260.22	$237.15 - $332.85
Q1 2022	285,378	$97,085	$344.01	$304.48 - $391.34
Q4 2021	39,804	$16,370	$373.74	$323.75 - $410.92
Q3 2021	51,463	$21,650	$434.10	$386.93 - $472.28
Q2 2021	35,172	$16,305	$449.61	$407.56 - $515.46
Q1 2021	47,485	$23,643	$503.06	$444.56 - $555.48
Q4 2020	94,973	$54,188	$513.28	$445.05 - $571.70
Q3 2020	156,179	$75,214	$465.37	$409.02 - $528.32
Q2 2020	110,549	$55,377	$438.02	$297.02 - $495.82
Q1 2020	212,497	$70,670	$327.01	$258.83 - $365.21
Q4 2019	27,135	$10,287	$343.80	$297.75 - $386.27
Q3 2019	81,868	$26,812	$335.01	$297.39 - $394.69
Q2 2019	75,256	$24,189	$270.14	$225.08 - $320.72
Q1 2019	3,836	$944	$211.23	$192.59 - $233.31
Q4 2018	63,200	$13,354	$192.62	$159.95 - $215.45
Q3 2018	1,446	$258	$178.37	$164.65 - $196.55
Q2 2018	3,261	$645	$192.09	$180.81 - $204.01
Q1 2018	6,862	$1,492	$190.22	$171.07 - $212.71
Q4 2017	3,814	$769	$174.10	$158.03 - $190.10
Q3 2017	89,943	$16,595	$176.21	$159.36 - $192.97
Q2 2017	1,188	$239	$176.15	$163.16 - $194.23
Q1 2017	5,577	$1,046	$166.41	$135.53 - $184.55
Q4 2016	3,111	$457	$145.60	$133.06 - $158.12
Q3 2016	4,257	$705	$148.56	$129.96 - $163.14
Q2 2016	8,402	$1,222	$121.40	$107.26 - $133.06
Q4 2015	1,468	$164	$92.99	$78.27 - $105.44
Q3 2015	2,318	$215	$87.71	$79.52 - $94.87
Q2 2015	23,657	$2,195	$79.87	$74.17 - $89.60
Q1 2015	47,497	$3,937	$71.51	$59.68 - $80.40
Q4 2014	1,097	$79	$59.29	$54.38 - $66.53
Q3 2014	28,306	$1,751	$50.63	$42.39 - $56.56
Q2 2014	36	$2	$48.96	$44.53 - $53.88
Q1 2014	8,773	$520	$55.22	$51.55 - $60.27
Q4 2013	8,269	$553	$58.63	$53.33 - $63.89
Q3 2013	22,028	$1,322	$47.53	$41.58 - $55.43
Q2 2013	46,696	$2,183	$38.12	$32.31 - $42.94