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ABIOMED INC
ABIOMED INC. Institutional holdings reported to the SEC.

Institutional Holders (2017Q2)
Portfolio Summary: 324 Institutional holders with a total value of $5,758,671,437.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PRIMECAP MANAGEMENT CO/CA/ 4,434,088 635,405,000 11.03%
2 BlackRock Finance, Inc. 3,373,655 483,444,000 8.40%
3 VANGUARD GROUP INC 3,317,593 475,411,000 8.26%
4 BAILLIE GIFFORD & CO 1,971,690 282,543,000 4.91%
5 Palo Alto Investors LP 1,951,284 279,619,000 4.86%
6 Essex Woodlands Management, Inc. 1,450,000 207,785,000 3.61%
7 BROWN CAPITAL MANAGEMENT LLC 1,394,477 199,829,000 3.47%
8 WELLINGTON MANAGEMENT GROUP LLP 1,246,832 178,671,000 3.10%
9 STATE STREET CORP 1,071,191 153,502,000 2.67%
10 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 973,794 139,545,000 2.42%
11 RENAISSANCE TECHNOLOGIES LLC 893,223 127,999,000 2.22%
12 Bank of New York Mellon Corp 740,576 106,123,000 1.84%
13 GOLDMAN SACHS GROUP INC 551,921 79,090,000 1.37%
14 SCOUT INVESTMENTS, INC. 534,243 76,557,000 1.33%
15 JANUS HENDERSON GROUP PLC 533,036 76,384,000 1.33%
16 NORGES BANK 531,584 76,176,000 1.32%
17 Jackson Square Partners, LLC 528,024 75,665,000 1.31%
18 MILLENNIUM MANAGEMENT LLC 468,897 67,193,000 1.17%
19 OAK RIDGE INVESTMENTS LLC 433,101 62,063,000 1.08%
20 Nationwide Fund Advisors 419,258 60,080,000 1.04%
21 BLAIR WILLIAM & CO/IL 402,920 57,738,000 1.00%
22 1832 Asset Management L.P. 363,800 50,969,000 0.89%
23 NORTHERN TRUST CORP 352,988 50,583,000 0.88%
24 GEODE CAPITAL MANAGEMENT, LLC 335,469 48,072,000 0.83%
25 MACQUARIE GROUP LTD 333,853 47,841,000 0.83%
26 Mitsubishi UFJ Trust & Banking Corp 329,900 47,275,000 0.82%
27 OppenheimerFunds, Inc. 322,662 46,238,000 0.80%
28 Stephens Investment Management Group LLC 316,251 45,319,000 0.79%
29 NEW YORK STATE COMMON RETIREMENT FUND 307,871 44,118,000 0.77%
30 CASTLEARK MANAGEMENT LLC 302,345 43,326,000 0.75%
31 Neuberger Berman Group LLC 283,848 40,675,000 0.71%
32 Champlain Investment Partners, LLC 263,285 37,729,000 0.66%
33 FRED ALGER MANAGEMENT, LLC 253,830 36,374,000 0.63%
34 AMERICAN CENTURY COMPANIES INC 242,274 34,718,000 0.60%
35 AMERIPRISE FINANCIAL INC 237,994 34,105,000 0.59%
36 SECTORAL ASSET MANAGEMENT INC 229,272 32,855,000 0.57%
37 FMR LLC 227,556 32,609,000 0.57%
38 EAGLE ASSET MANAGEMENT INC 227,467 32,596,000 0.57%
39 ROCKEFELLER FINANCIAL SERVICES INC 222,410 31,871,000 0.55%
40 Polar Capital LLP 210,000 30,093,000 0.52%
41 ArrowMark Colorado Holdings LLC 207,675 29,760,000 0.52%
42 D. E. Shaw & Co., Inc. 197,325 28,277,000 0.49%
43 TIAA CREF INVESTMENT MANAGEMENT LLC 192,559 27,594,000 0.48%
44 MORGAN STANLEY 174,067 24,944,000 0.43%
45 PRINCIPAL FINANCIAL GROUP INC 174,052 24,942,000 0.43%
46 GUGGENHEIM CAPITAL LLC 167,867 24,057,000 0.42%
47 FRONTIER CAPITAL MANAGEMENT CO LLC 162,730 23,319,000 0.40%
48 SEI INVESTMENTS CO 152,657 21,876,000 0.38%
49 NEXT CENTURY GROWTH INVESTORS LLC 142,861 20,471,000 0.36%
50 DIMENSIONAL FUND ADVISORS LP 141,970 20,343,000 0.35%
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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.