MARKETAXESS HLDGS INC

Ticker: MKTX CUSIP: 57060D108 Class: COM

GUARDIAN CAPITAL LP's Holding History (CIK: 0001224324)

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

Q4 2025

Shares 23,700 Value ($000) $4,296 Avg Close $169.50 Range $154.80 - $183.58

Q3 2025

Shares 33,597 Value ($000) $5,854 Avg Close $193.45 Range $172.51 - $222.19

Q2 2025

Shares 26,300 Value ($000) $5,874 Avg Close $216.56 Range $190.86 - $229.08

Q1 2025

Shares 26,300 Value ($000) $5,690 Avg Close $206.23 Range $183.82 - $224.26

Q4 2024

Shares 26,374 Value ($000) $5,962 Avg Close $257.54 Range $220.08 - $289.94

Q3 2024

Shares 25,274 Value ($000) $6,475 Avg Close $228.65 Range $187.70 - $258.10

Q2 2024

Shares 25,074 Value ($000) $5,028 Avg Close $200.47 Range $187.45 - $222.81

Q1 2024

Shares 25,074 Value ($000) $5,497 Avg Close $228.96 Range $194.52 - $282.26

Q4 2023

Shares 21,755 Value ($000) $6,371 Avg Close $233.72 Range $195.99 - $288.33

Q3 2023

Shares 20,955 Value ($000) $4,477 Avg Close $233.55 Range $192.90 - $268.22

Q2 2023

Shares 21,854 Value ($000) $5,713 Avg Close $286.65 Range $245.65 - $383.62

Q1 2023

Shares 6,354 Value ($000) $2,486 Avg Close $339.53 Range $266.01 - $381.21

Q4 2022

Shares 7,046 Value ($000) $1,965 Avg Close $246.25 Range $210.55 - $283.35

Q3 2022

Shares 6,745 Value ($000) $1,501 Avg Close $244.83 Range $207.63 - $267.12

Q2 2022

Shares 6,500 Value ($000) $1,664 Avg Close $260.22 Range $237.15 - $332.85

Q1 2022

Shares 6,000 Value ($000) $2,041 Avg Close $344.01 Range $304.48 - $391.34

Q4 2021

Shares 500 Value ($000) $206 Avg Close $373.74 Range $323.75 - $410.92

Q1 2021

Shares 1,150 Value ($000) $573 Avg Close $503.06 Range $444.56 - $555.48

Q4 2020

Shares 13,421 Value ($000) $7,657 Avg Close $513.28 Range $445.05 - $571.70

Q3 2020

Shares 12,759 Value ($000) $6,145 Avg Close $465.37 Range $409.02 - $528.32

Q1 2020

Shares 735 Value ($000) $244 Avg Close $327.01 Range $258.83 - $365.21

Q4 2019

Shares 3,577 Value ($000) $1,356 Avg Close $343.80 Range $297.75 - $386.27

Q3 2019

Shares 3,563 Value ($000) $1,167 Avg Close $335.01 Range $297.39 - $394.69

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	23,700	$4,296	$169.50	$154.80 - $183.58
Q3 2025	33,597	$5,854	$193.45	$172.51 - $222.19
Q2 2025	26,300	$5,874	$216.56	$190.86 - $229.08
Q1 2025	26,300	$5,690	$206.23	$183.82 - $224.26
Q4 2024	26,374	$5,962	$257.54	$220.08 - $289.94
Q3 2024	25,274	$6,475	$228.65	$187.70 - $258.10
Q2 2024	25,074	$5,028	$200.47	$187.45 - $222.81
Q1 2024	25,074	$5,497	$228.96	$194.52 - $282.26
Q4 2023	21,755	$6,371	$233.72	$195.99 - $288.33
Q3 2023	20,955	$4,477	$233.55	$192.90 - $268.22
Q2 2023	21,854	$5,713	$286.65	$245.65 - $383.62
Q1 2023	6,354	$2,486	$339.53	$266.01 - $381.21
Q4 2022	7,046	$1,965	$246.25	$210.55 - $283.35
Q3 2022	6,745	$1,501	$244.83	$207.63 - $267.12
Q2 2022	6,500	$1,664	$260.22	$237.15 - $332.85
Q1 2022	6,000	$2,041	$344.01	$304.48 - $391.34
Q4 2021	500	$206	$373.74	$323.75 - $410.92
Q1 2021	1,150	$573	$503.06	$444.56 - $555.48
Q4 2020	13,421	$7,657	$513.28	$445.05 - $571.70
Q3 2020	12,759	$6,145	$465.37	$409.02 - $528.32
Q1 2020	735	$244	$327.01	$258.83 - $365.21
Q4 2019	3,577	$1,356	$343.80	$297.75 - $386.27
Q3 2019	3,563	$1,167	$335.01	$297.39 - $394.69