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SEI INVESTMENTS CO

Position in MKTX — Marketaxess Holdings Inc

CIK 350894 OAKS, PA

Position in MKTX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$6,357,936
+$1,370,426 QoQ
Shares Held
56,022
+85.3% QoQ
Ownership
0.159%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#70
of 393 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MKTX Over Time

Shares Held

Position Value (USD)

Position in Capital Markets

Financial Services · as of Jun 30, 2026

SEI INVESTMENTS CO holds $1,060,463,672 across 42 Capital Markets names. MKTX ranks #23 (0.6% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in MKTX

Export CSV
26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $6,357,936 56,022
2026-03-31 $4,987,510 30,231
2025-12-31 $2,570,849 14,184
2025-09-30 $2,561,126 14,698
2025-06-30 $14,110,620 63,180
2025-03-31 $27,614,048 127,636
2024-12-31 $23,685,827 104,786
2024-09-30 $27,994,461 109,268
2024-06-30 $22,430,683 111,857
2024-03-31 $34,892,321 159,144
2023-12-31 $53,196,787 181,652
2023-09-30 $32,242,335 150,919
2023-06-30 $34,580,637 132,280
2023-03-31 $54,954,722 140,445
2022-12-31 $33,816,527 121,254
2022-09-30 $33,151,009 149,000
2022-06-30 $36,282,760 141,724
2022-03-31 $29,818,870 87,651
2021-12-31 $6,872,321 16,710
2021-09-30 $2,881,726 6,850
2021-06-30 $2,853,859 6,156
2021-03-31 $4,317,464 8,671
2020-12-31 $4,431,539 7,767
2020-09-30 $5,134,711 10,662
2020-06-30 $7,907,022 15,785
2020-03-31 $7,821,381 23,518