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

Institutional Holders (2014Q4)
Portfolio Summary: 157 Institutional holders with a total value of $1,613,361,692.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PRIMECAP MANAGEMENT CO/CA/ 5,687,590 216,470,000 13.42%
2 Essex Woodlands Management, Inc. 3,150,000 119,889,000 7.43%
3 Jackson Square Partners, LLC 3,024,759 115,122,000 7.14%
4 VANGUARD GROUP INC 2,509,114 95,497,000 5.92%
5 Palo Alto Investors LP 2,460,124 93,632,000 5.80%
6 BlackRock Fund Advisors 2,209,212 84,083,000 5.21%
7 MACQUARIE GROUP LTD 2,064,880 78,589,000 4.87%
8 BLAIR WILLIAM & CO/IL 1,876,583 71,423,000 4.43%
9 WELLINGTON MANAGEMENT GROUP LLP 1,874,870 71,357,000 4.42%
10 NEXT CENTURY GROWTH INVESTORS LLC 1,030,178 39,208,000 2.43%
11 BlackRock Institutional Trust Company, N.A. 1,019,468 38,801,000 2.40%
12 MILLENNIUM MANAGEMENT LLC 947,170 36,049,000 2.23%
13 ROYAL BANK OF CANADA 893,266 33,998,000 2.11%
14 LORD, ABBETT & CO. LLC 812,680 30,931,000 1.92%
15 Cortina Asset Management, LLC 802,714 30,551,000 1.89%
16 NORGES BANK 765,302 29,127,000 1.81%
17 STATE STREET CORP 732,547 27,883,000 1.73%
18 JANUS HENDERSON GROUP PLC 602,834 22,944,000 1.42%
19 NORTHERN TRUST CORP 464,493 17,679,000 1.10%
20 ROCKEFELLER FINANCIAL SERVICES INC 461,914 17,580,000 1.09%
21 Bank of New York Mellon Corp 430,282 16,377,000 1.02%
22 BANK OF MONTREAL /CAN/ 399,525 15,206,000 0.94%
23 MORGAN STANLEY 356,859 13,582,000 0.84%
24 D. E. Shaw & Co., Inc. 350,338 13,334,000 0.83%
25 RUSSELL FRANK CO/ 289,530 11,106,000 0.69%
26 Nuveen Asset Management, LLC 287,782 10,953,000 0.68%
27 Portolan Capital Management, LLC 283,507 10,790,000 0.67%
28 Nichols Asset Management LLC 271,973 10,351,000 0.64%
29 DECADE CAPITAL MANAGEMENT LLC 240,531 9,155,000 0.57%
30 PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 233,089 8,871,000 0.55%
31 PRINCIPAL FINANCIAL GROUP INC 230,309 8,765,000 0.54%
32 GEODE CAPITAL MANAGEMENT, LLC 211,076 8,033,000 0.50%
33 CASTLEARK MANAGEMENT LLC 203,325 7,739,000 0.48%
34 AMERIPRISE FINANCIAL INC 195,533 7,442,000 0.46%
35 Cupps Capital Management, LLC 172,384 6,560,000 0.41%
36 Apex Capital Management 171,317 6,520,000 0.40%
37 DEUTSCHE BANK AG\ 163,471 6,220,000 0.39%
38 TIAA CREF INVESTMENT MANAGEMENT LLC 150,310 5,721,000 0.35%
39 SEI INVESTMENTS CO 145,652 5,544,000 0.34%
40 Nationwide Fund Advisors 142,900 5,439,000 0.34%
41 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 141,385 5,381,000 0.33%
42 BARCLAYS PLC 138,517 5,263,000 0.33%
43 TWO SIGMA INVESTMENTS, LP 135,058 5,140,000 0.32%
44 BlackRock Investment Management, LLC 128,358 4,885,000 0.30%
45 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 124,320 4,802,000 0.30%
46 OMT Capital Management LLC 126,000 4,796,000 0.30%
47 CREDIT SUISSE AG/ 119,982 4,566,000 0.28%
48 OXFORD ASSET MANAGEMENT LLP 104,775 4,019,000 0.25%
49 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 105,536 4,017,000 0.25%
50 C WorldWide Group Holding A/S 104,888 3,992,000 0.25%
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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.