SEI INVESTMENTS CO

Position in MKTX — Marketaxess Holdings Inc

CIK 350894 OAKS, PA

Position in MKTX

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$4,987,510

+$2,416,661 QoQ

Shares Held

30,231

+113.1% QoQ

Ownership

0.085%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Financial Services · as of Mar 31, 2026

SEI INVESTMENTS CO holds $1,102,782,002 across 38 Capital Markets names. MKTX ranks #25 (0.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MS	Morgan Stanley	1,410,293	$232,091,918
2	SCHW	Schwab Charles Corp	1,924,005	$180,817,989
3	GS	Goldman Sachs Group Inc	192,687	$163,011,273
4	HLI	Houlihan Lokey, Inc.	689,532	$99,030,585
5	LPLA	LPL Financial Holdings Inc.	126,774	$38,137,421
6	IBKR	Interactive Brokers Group, Inc.	564,427	$37,856,118
7	JEF	Jefferies Financial Group Inc.	860,887	$35,528,806
8	HOOD	Robinhood Markets, Inc.	491,340	$34,049,861

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$4,987,510	30,231	+113.1%	Shares	Sole	2026-05-13
2025-12-31	$2,570,849	14,184	-3.5%	Shares	Sole	2026-02-13
2025-09-30	$2,561,126	14,698	-76.7%	Shares	Sole	2025-11-13
2025-06-30	$14,110,620	63,180	-50.5%	Shares	Sole	2025-08-14
2025-03-31	$27,614,048	127,636	+21.8%	Shares	Sole	2025-05-14
2024-12-31	$23,685,827	104,786	-4.1%	Shares	Sole	2025-02-11
2024-09-30	$27,994,461	109,268	-2.3%	Shares	Sole	2024-11-12
2024-06-30	$22,430,683	111,857	-29.7%	Shares	Sole	2024-08-13
2024-03-31	$34,892,321	159,144	-12.4%	Shares	Sole	2024-05-07
2023-12-31	$53,196,787	181,652	+20.4%	Shares	Sole	2024-02-14
2023-09-30	$32,242,335	150,919	+14.1%	Shares	Sole	2023-11-14
2023-06-30	$34,580,637	132,280	-5.8%	Shares	Defined	2023-08-11
2023-03-31	$54,954,722	140,445	+15.8%	Shares	Defined	2023-05-12
2022-12-31	$33,816,527	121,254	-18.6%	Shares	Defined	2023-02-10
2022-09-30	$33,151,009	149,000	+5.1%	Shares	Sole	2022-11-14
2022-06-30	$36,282,760	141,724	+61.7%	Shares	Sole	2022-08-15
2022-03-31	$29,818,870	87,651	+424.5%	Shares	Sole	2022-05-13
2021-12-31	$6,872,321	16,710	+143.9%	Shares	Sole	2022-02-14
2021-09-30	$2,881,726	6,850	+11.3%	Shares	Sole	2021-11-12
2021-06-30	$2,853,859	6,156	-29.0%	Shares	Sole	2021-08-06
2021-03-31	$4,317,464	8,671	+11.6%	Shares	Sole	2021-05-12
2020-12-31	$4,431,539	7,767	-27.2%	Shares	Sole	2021-02-08
2020-09-30	$5,134,711	10,662	-32.5%	Shares	Sole	2020-12-04
2020-06-30	$7,907,022	15,785	-32.9%	Shares	Sole	2020-08-17
2020-03-31	$7,821,381	23,518	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.