NEW YORK, NY
MARKETAXESS HOLDINGS INCMKTX— Latest position per institution from SEC 13F filings
15
Institutional holders
39.54M
Total shares held
4.50B
Estimated value
1.98M
Avg. position size
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
CIK 1081019
Shares
4.82M
Value
42.44K
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
4M
Value
453.94M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
3.84M
Value
695.98M
Filed
Dec 31, 2025
PRIMECAP MANAGEMENT CO/CA/
CIK 763212
Shares
3.50M
Value
397.77M
Filed
Jun 30, 2026
NORTH REEF CAPITAL MANAGEMENT LP
CIK 1867831
Shares
3.40M
Value
385.30M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
2.95M
Value
591.45M
Filed
Jun 30, 2024
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
2.10M
Value
238.36M
Filed
Jun 30, 2026
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
1.99M
Value
222.76M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.55M
Value
175.53M
Filed
Jun 30, 2026
FMR LLC
CIK 315066
Shares
1.40M
Value
159.45M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
1.28M
Value
145.43M
Filed
Jun 30, 2026
NEUBERGER BERMAN GROUP LLC
CIK 1465109
Shares
1.23M
Value
139.58M
Filed
Jun 30, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
1.16M
Value
131.23M
Filed
Jun 30, 2026
CITIGROUP INC
CIK 831001
Shares
1.06M
Value
120.78M
Filed
Jun 30, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
1.03M
Value
117.04M
Filed
Jun 30, 2026
BANK OF MONTREAL /CAN/
CIK 927971
Shares
1.02M
Value
115.42M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
994.77K
Value
112.92M
Filed
Jun 30, 2026
VAN ECK ASSOCIATES CORP
CIK 869178
Shares
924.62K
Value
104.93M
Filed
Jun 30, 2026
BURGUNDY ASSET MANAGEMENT LTD.
CIK 1315868
Shares
692.22K
Value
127.26M
Filed
Sep 30, 2025
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
597.89K
Value
67.85M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | 4.82M | 42.44K | Jun 30, 2026 |
| 2 | BLACKROCK, INC. | 2012383 | 4M | 453.94M | Jun 30, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 3.84M | 695.98M | Dec 31, 2025 |
| 4 | PRIMECAP MANAGEMENT CO/CA/ | 763212 | 3.50M | 397.77M | Jun 30, 2026 |
| 5 | NORTH REEF CAPITAL MANAGEMENT LP | 1867831 | 3.40M | 385.30M | Jun 30, 2026 |
| 6 | BLACKROCK FINANCE, INC. | 1364742 | 2.95M | 591.45M | Jun 30, 2024 |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 2.10M | 238.36M | Jun 30, 2026 |
| 8 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 1.99M | 222.76M | Jun 30, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.55M | 175.53M | Jun 30, 2026 |
| 10 | FMR LLC | 315066 | 1.40M | 159.45M | Jun 30, 2026 |
| 11 | STATE STREET CORP | 93751 | 1.28M | 145.43M | Jun 30, 2026 |
| 12 | NEUBERGER BERMAN GROUP LLC | 1465109 | 1.23M | 139.58M | Jun 30, 2026 |
| 13 | MILLENNIUM MANAGEMENT LLC | 1273087 | 1.16M | 131.23M | Jun 30, 2026 |
| 14 | CITIGROUP INC | 831001 | 1.06M | 120.78M | Jun 30, 2026 |
| 15 | GOLDMAN SACHS GROUP INC | 886982 | 1.03M | 117.04M | Jun 30, 2026 |
| 16 | BANK OF MONTREAL /CAN/ | 927971 | 1.02M | 115.42M | Jun 30, 2026 |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 994.77K | 112.92M | Jun 30, 2026 |
| 18 | VAN ECK ASSOCIATES CORP | 869178 | 924.62K | 104.93M | Jun 30, 2026 |
| 19 | BURGUNDY ASSET MANAGEMENT LTD. | 1315868 | 692.22K | 127.26M | Sep 30, 2025 |
| 20 | DIMENSIONAL FUND ADVISORS LP | 354204 | 597.89K | 67.85M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.