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MARKETAXESS HLDGS INC
MARKETAXESS HLDGS INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q4)
Portfolio Summary: 243 Institutional holders with a total value of $3,944,603,455.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WELLS FARGO & COMPANY/MN 3,023,035 337,340,000 8.55%
2 VANGUARD GROUP INC 2,529,846 282,306,000 7.16%
3 BlackRock Fund Advisors 1,976,984 220,612,000 5.59%
4 BAILLIE GIFFORD & CO 1,647,335 183,826,000 4.66%
5 WELLINGTON MANAGEMENT GROUP LLP 1,401,495 156,393,000 3.96%
6 KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 1,367,631 152,614,000 3.87%
7 STATE STREET CORP 1,198,296 133,714,000 3.39%
8 Neuberger Berman Group LLC 1,160,240 129,471,000 3.28%
9 BlackRock Institutional Trust Company, N.A. 1,086,658 121,260,000 3.07%
10 PRIMECAP MANAGEMENT CO/CA/ 1,003,420 111,972,000 2.84%
11 Burgundy Asset Management Ltd. 854,575 95,362,000 2.42%
12 JANUS HENDERSON INVESTORS US LLC 824,208 91,973,000 2.33%
13 GW&K Investment Management, LLC 791,964 88,375,000 2.24%
14 LORD, ABBETT & CO. LLC 776,858 86,690,000 2.20%
15 DIMENSIONAL FUND ADVISORS LP 649,410 72,469,000 1.84%
16 NORTHERN TRUST CORP 594,204 66,307,000 1.68%
17 Capital World Investors 590,000 65,838,000 1.67%
18 NEXT CENTURY GROWTH INVESTORS LLC 581,907 64,935,000 1.65%
19 Van Berkom & Associates Inc. 581,735 64,916,000 1.65%
20 RS INVESTMENT MANAGEMENT CO LLC 521,317 58,174,000 1.47%
21 OppenheimerFunds, Inc. 512,261 57,163,000 1.45%
22 GOLDMAN SACHS GROUP INC 508,782 56,775,000 1.44%
23 Invesco Ltd. 496,323 55,384,000 1.40%
24 AMERICAN CENTURY COMPANIES INC 443,516 49,492,000 1.25%
25 KORNITZER CAPITAL MANAGEMENT INC /KS 426,631 47,608,000 1.21%
26 NORGES BANK 419,685 46,833,000 1.19%
27 Bank of New York Mellon Corp 403,787 45,059,000 1.14%
28 LOOMIS SAYLES & CO L P 362,877 40,494,000 1.03%
29 Apex Capital Management 317,469 35,426,000 0.90%
30 VOYA INVESTMENT MANAGEMENT LLC 309,095 34,492,000 0.87%
31 PRICE T ROWE ASSOCIATES INC /MD/ 297,400 33,187,000 0.84%
32 PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 275,214 30,711,000 0.78%
33 JANUS HENDERSON GROUP PLC 273,859 30,560,000 0.77%
34 Mitsubishi UFJ Trust & Banking Corp 252,950 28,227,000 0.72%
35 CLIFTON PARK CAPITAL MANAGEMENT, LLC 250,000 27,898,000 0.71%
36 BAHL & GAYNOR INC 249,779 27,873,000 0.71%
37 BANK OF AMERICA CORP /DE/ 249,072 27,794,000 0.70%
38 GEODE CAPITAL MANAGEMENT, LLC 242,801 27,093,000 0.69%
39 Nationwide Fund Advisors 221,856 24,757,000 0.63%
40 BlackRock Investment Management, LLC 212,278 23,688,000 0.60%
41 AMERIPRISE FINANCIAL INC 212,234 23,683,000 0.60%
42 ROTHSCHILD & CO ASSET MANAGEMENT US INC. 202,887 22,640,000 0.57%
43 Stephens Investment Management Group LLC 191,480 21,367,000 0.54%
44 RENAISSANCE TECHNOLOGIES LLC 189,310 21,125,000 0.54%
45 TIAA CREF INVESTMENT MANAGEMENT LLC 178,677 19,939,000 0.51%
46 Boston Trust Walden Corp 169,796 18,947,000 0.48%
47 JPMORGAN CHASE & CO 148,167 16,535,000 0.42%
48 GUGGENHEIM CAPITAL LLC 137,639 15,359,000 0.39%
49 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 131,303 14,653,000 0.37%
50 Granahan Investment Management, LLC 121,700 13,581,000 0.34%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.