How many shares of MKTX does PRIMECAP MANAGEMENT CO/CA/ own?

As of 2026-Q1, PRIMECAP MANAGEMENT CO/CA/ holds 3.3M shares of MKTX (MARKETAXESS HLDGS INC).

What is PRIMECAP MANAGEMENT CO/CA/'s MKTX position worth?

As of 2026-Q1, PRIMECAP MANAGEMENT CO/CA/'s MKTX position is worth $552.2M.

Is PRIMECAP MANAGEMENT CO/CA/ buying or selling MKTX?

In 2026-Q1, PRIMECAP MANAGEMENT CO/CA/ increased their MKTX position (+5.4% change in shares).

When did PRIMECAP MANAGEMENT CO/CA/ first buy MKTX?

Based on available 13F filings, PRIMECAP MANAGEMENT CO/CA/ first reported a position in MKTX in 2018-Q4. They have held the position across 30 quarters.

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PRIMECAP MANAGEMENT CO/CA/

MKTX
30 quarters

Position history for PRIMECAP MANAGEMENT CO/CA/'s holdings in MARKETAXESS HLDGS INC

Current Value

$552.2M

Current Shares

3.3M

Total Value Change

+$387.3M

Total Shares Change

+2.6M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Increased	3.3M	+5.4%	$552.2M	0.4%	$193.61	40
2025-Q4	Increased	3.2M	+42.4%	$575.5M	0.4%	$182.51	50
2025-Q3	Increased	2.2M	+66.5%	$388.7M	0.3%	$176.85	55
2025-Q2	Decreased	1.3M	-1.6%	$299.1M	0.2%	$217.70	0
2025-Q1	Decreased	1.4M	-0.6%	$294.6M	0.2%	$214.19	0
2024-Q4	Increased	1.4M	+2.3%	$309.5M	0.2%	$221.76	38
2024-Q3	Increased	1.3M	+0.6%	$343M	0.3%	$250.15	37
2024-Q2	Increased	1.3M	+18.2%	$266.9M	0.2%	$196.21	43
2024-Q1	Increased	1.1M	+0.3%	$246.9M	0.2%	$213.79	37
2023-Q4	Increased	1.1M	+0.4%	$328.7M	0.3%	$284.62	37
2023-Q3	Increased	1.1M	+0.9%	$238.9M	0.2%	$206.96	37
2023-Q2	Decreased	1.1M	-0.1%	$289.6M	0.2%	$253.11	0
2023-Q1	Increased	1.1M	+12.9%	$434M	0.4%	$373.82	42
2022-Q4	Increased	982,030	+1.9%	$273.9M	0.3%	$268.24	38
2022-Q3	Increased	963,880	+19.4%	$214.5M	0.2%	$215.41	43
2022-Q2	Increased	807,350	+46.9%	$206.7M	0.2%	$249.18	50
2022-Q1	Increased	549,500	+18.4%	$186.9M	0.1%	$330.96	43
2021-Q4	Increased	464,190	+3.4%	$190.9M	0.1%	$392.94	38
2021-Q3	Increased	449,160	+5.4%	$189M	0.1%	$402.76	39
2021-Q2	Increased	426,060	+14.2%	$197.5M	0.1%	$448.24	42
2021-Q1	Decreased	373,220	-3.2%	$185.8M	0.1%	$469.94	0
2020-Q4	Decreased	385,620	-11.2%	$220M	0.2%	$532.38	0
2020-Q3	Decreased	434,320	-15.4%	$209.2M	0.2%	$459.15	0
2020-Q2	Decreased	513,220	-14.5%	$257.1M	0.2%	$471.07	0
2020-Q1	Decreased	600,120	-12.9%	$199.6M	0.2%	$331.52	0
2019-Q4	Unchanged	689,220	0.0%	$261.3M	0.2%	$352.77	0
2019-Q3	Decreased	689,220	-2.3%	$225.7M	0.2%	$305.43	0
2019-Q2	Decreased	705,320	-2.6%	$226.7M	0.2%	$301.89	0
2019-Q1	Decreased	724,220	-7.2%	$178.2M	0.1%	$230.72	0
2018-Q4	New	780,220	-	$164.9M	0.1%	$194.15	50

Other major holders of MKTX: BAILLIE GIFFORD & CO, VANGUARD GROUP INC

MKTX30 quarters

MKTX
30 quarters