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MEDIDATA SOLUTIONS INC
MEDIDATA SOLUTIONS INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q1)
Portfolio Summary: 195 Institutional holders with a total value of $2,881,976,681.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SANDS CAPITAL MANAGEMENT, LLC 5,399,777 264,805,000 9.19%
2 BROWN CAPITAL MANAGEMENT LLC 5,240,944 257,016,000 8.92%
3 VANGUARD GROUP INC 3,689,931 180,954,000 6.28%
4 FMR LLC 3,296,367 161,653,000 5.61%
5 BlackRock Fund Advisors 3,226,936 158,249,000 5.49%
6 PRICE T ROWE ASSOCIATES INC /MD/ 2,295,061 112,550,000 3.91%
7 Clearbridge Investments, LLC 2,217,101 108,727,000 3.77%
8 COLUMBIA WANGER ASSET MANAGEMENT LLC 2,008,800 98,512,000 3.42%
9 MORGAN STANLEY 1,746,066 85,628,000 2.97%
10 BlackRock Institutional Trust Company, N.A. 1,710,944 83,905,000 2.91%
11 KORNITZER CAPITAL MANAGEMENT INC /KS 1,578,735 77,421,000 2.69%
12 EAGLE ASSET MANAGEMENT INC 1,378,708 67,611,000 2.35%
13 Bank of New York Mellon Corp 1,175,434 57,644,000 2.00%
14 ZEVENBERGEN CAPITAL INVESTMENTS LLC 1,170,455 57,399,000 1.99%
15 Global Thematic Partners, LLC 1,170,352 57,394,000 1.99%
16 STATE STREET CORP 1,144,531 56,126,000 1.95%
17 NEW YORK STATE COMMON RETIREMENT FUND 1,020,470 50,044,000 1.74%
18 DEUTSCHE BANK AG\ 974,942 47,809,000 1.66%
19 Stephens Investment Management Group LLC 901,023 44,186,000 1.53%
20 Champlain Investment Partners, LLC 768,460 37,685,000 1.31%
21 FRONTIER CAPITAL MANAGEMENT CO LLC 729,317 35,766,000 1.24%
22 Apex Capital Management 718,029 35,212,000 1.22%
23 NORTHERN TRUST CORP 712,289 34,930,000 1.21%
24 GW&K Investment Management, LLC 682,405 33,465,000 1.16%
25 ROYAL BANK OF CANADA 586,468 28,760,000 1.00%
26 FRED ALGER MANAGEMENT, LLC 582,180 28,550,000 0.99%
27 NORGES BANK 546,798 26,815,000 0.93%
28 STRS OHIO 515,997 25,304,000 0.88%
29 WELLS FARGO & COMPANY/MN 497,982 24,421,000 0.85%
30 Conestoga Capital Advisors, LLC 485,136 23,791,000 0.83%
31 NEW SOUTH CAPITAL MANAGEMENT INC 431,614 21,166,000 0.73%
32 WADDELL & REED FINANCIAL INC 419,156 20,555,000 0.71%
33 Polar Capital LLP 406,223 19,919,000 0.69%
34 JANUS HENDERSON GROUP PLC 302,044 19,653,000 0.68%
35 AMERIPRISE FINANCIAL INC 374,292 18,354,000 0.64%
36 Alberta Investment Management Corp 371,460 18,216,000 0.63%
37 PRINCIPAL FINANCIAL GROUP INC 347,093 17,021,000 0.59%
38 MANAGED ACCOUNT ADVISORS LLC 346,467 16,991,000 0.59%
39 ArrowMark Colorado Holdings LLC 339,883 16,668,000 0.58%
40 GEODE CAPITAL MANAGEMENT, LLC 324,073 15,892,000 0.55%
41 DISCIPLINED GROWTH INVESTORS INC /MN 279,645 13,714,000 0.48%
42 KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 273,453 13,410,000 0.47%
43 BROWN ADVISORY INC 265,867 13,038,000 0.45%
44 TIVERTON ASSET MANAGEMENT LLC 234,600 11,505,000 0.40%
45 Cupps Capital Management, LLC 226,030 11,084,000 0.38%
46 IRONBRIDGE CAPITAL MANAGEMENT LP 225,790 11,073,000 0.38%
47 PRUDENTIAL FINANCIAL INC 194,860 9,556,000 0.33%
48 TIAA CREF INVESTMENT MANAGEMENT LLC 191,767 9,404,000 0.33%
49 MACKENZIE FINANCIAL CORP 185,065 9,076,000 0.31%
50 RUSSELL FRANK CO/ 182,574 8,953,000 0.31%
Page 1 of 4

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.