As of July 2024, per latest ADV filings
1. FIDELITY MANAGEMENT & RESEARCH COMPANY LLC
Assets Under Management: $3,964,385,404,654
Client Accounts: 31,349
2. WELLINGTON MANAGEMENT COMPANY LLP
Assets Under Management: $1,282,732,502,947
Client Accounts: 1,559
3. GEODE CAPITAL MANAGEMENT, LLC
Assets Under Management: $1,062,795,395,069
Client Accounts: 172
4. SSGA FUNDS MANAGEMENT, INC.
Assets Under Management: $1,014,331,002,469
Client Accounts: 246
5. STRATEGIC ADVISERS LLC
Assets Under Management: $824,740,096,815
Client Accounts: 1,965,880
6. FIDELITY PERSONAL AND WORKPLACE ADVISORS
Assets Under Management: $818,776,100,963
Client Accounts: 1,991,043
7. MELLON INVESTMENTS CORPORATION
Assets Under Management: $674,158,830,515
Client Accounts: 502
8. MFS INVESTMENT MANAGEMENT
Assets Under Management: $454,325,314,664
Client Accounts: 344
9. COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLC
Assets Under Management: $427,057,574,198
Client Accounts: 5,495
10. LOOMIS, SAYLES & COMPANY, L.P.
Assets Under Management: $301,378,322,996
Client Accounts: 20,445
11. CAMBRIDGE ASSOCIATES, LLC
Assets Under Management: $281,965,202,879
Client Accounts: 556
12. ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
Assets Under Management: $216,586,078,465
Client Accounts: 151
13. JOHN HANCOCK INVESTMENT MANAGEMENT LLC
Assets Under Management: $189,588,843,467
Client Accounts: 28,802
14. MANULIFE INVESTMENT MANAGEMENT (US) LLC
Assets Under Management: $188,781,027,999
Client Accounts: 3,809
15. COMMONWEALTH FINANCIAL NETWORK
Assets Under Management: $177,031,841,416
Client Accounts: 623,075
16. HARBOURVEST PARTNERS, LLC
Assets Under Management: $151,348,655,160
Client Accounts: 281
17. MERCER INVESTMENTS LLC
Assets Under Management: $129,785,696,503
Client Accounts: 390
18. MFS INSTITUTIONAL ADVISORS INC.
Assets Under Management: $128,519,177,590
Client Accounts: 8,586
19. BOSTON MANAGEMENT AND RESEARCH
Assets Under Management: $111,002,081,270
Client Accounts: 70
20. RHUMBLINE ADVISERS
Assets Under Management: $107,610,831,949
Client Accounts: 689
21. ACADIAN ASSET MANAGEMENT
Assets Under Management: $101,657,441,852
Client Accounts: 292
22. AMUNDI ASSET MANAGEMENT US, INC.
Assets Under Management: $99,749,369,030
Client Accounts: 260
23. PUTNAM INVESTMENT MANAGEMENT, LLC
Assets Under Management: $97,851,190,759
Client Accounts: 180
24. INCOME RESEARCH + MANAGEMENT
Assets Under Management: $96,989,577,589
Client Accounts: 922
25. NEPC, LLC
Assets Under Management: $95,392,808,194
Client Accounts: 110