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

Institutional Holders (2015Q3)
Portfolio Summary: 241 Institutional holders with a total value of $3,622,850,440.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PRIMECAP MANAGEMENT CO/CA/ 5,668,090 525,772,000 14.51%
2 VANGUARD GROUP INC 3,350,558 310,798,000 8.58%
3 Palo Alto Investors LP 2,827,005 262,233,000 7.24%
4 BlackRock Fund Advisors 2,495,643 231,496,000 6.39%
5 Essex Woodlands Management, Inc. 2,150,000 199,434,000 5.50%
6 Jackson Square Partners, LLC 1,661,332 154,105,000 4.25%
7 1832 Asset Management L.P. 1,140,300 103,681,000 2.86%
8 MACQUARIE GROUP LTD 1,099,571 101,996,000 2.82%
9 BlackRock Institutional Trust Company, N.A. 953,562 88,452,000 2.44%
10 Bank of New York Mellon Corp 726,114 67,356,000 1.86%
11 LORD, ABBETT & CO. LLC 687,440 63,767,000 1.76%
12 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 658,342 61,068,000 1.69%
13 OAK RIDGE INVESTMENTS LLC 598,652 55,531,000 1.53%
14 NORGES BANK 591,085 54,829,000 1.51%
15 NEXT CENTURY GROWTH INVESTORS LLC 588,640 54,602,000 1.51%
16 NORTHERN TRUST CORP 503,742 46,727,000 1.29%
17 ROYAL BANK OF CANADA 434,155 40,271,000 1.11%
18 RENAISSANCE TECHNOLOGIES LLC 363,723 33,739,000 0.93%
19 Cupps Capital Management, LLC 349,076 32,380,000 0.89%
20 VOYA INVESTMENT MANAGEMENT LLC 340,503 31,584,000 0.87%
21 MORGAN STANLEY 310,928 28,841,000 0.80%
22 Cortina Asset Management, LLC 274,581 25,470,000 0.70%
23 JANUS HENDERSON GROUP PLC 264,154 24,503,000 0.68%
24 DEUTSCHE BANK AG\ 260,451 24,157,000 0.67%
25 TWO SIGMA INVESTMENTS, LP 259,949 24,113,000 0.67%
26 GEODE CAPITAL MANAGEMENT, LLC 259,513 24,071,000 0.66%
27 TEACHERS ADVISORS, LLC 256,053 23,751,000 0.66%
28 Invesco Ltd. 254,929 23,647,000 0.65%
29 PRINCIPAL FINANCIAL GROUP INC 251,991 23,374,000 0.65%
30 BLAIR WILLIAM & CO/IL 250,094 23,198,000 0.64%
31 Stephens Investment Management Group LLC 247,615 22,969,000 0.63%
32 ROCKEFELLER FINANCIAL SERVICES INC 242,742 22,517,000 0.62%
33 FRONTIER CAPITAL MANAGEMENT CO LLC 234,166 21,721,000 0.60%
34 WELLINGTON MANAGEMENT GROUP LLP 227,025 21,059,000 0.58%
35 FRED ALGER MANAGEMENT, LLC 223,851 20,764,000 0.57%
36 Apex Capital Management 217,316 20,158,000 0.56%
37 RUSSELL FRANK CO/ 214,057 19,856,000 0.55%
38 PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 213,373 19,792,000 0.55%
39 GOLDMAN SACHS GROUP INC 209,329 19,417,000 0.54%
40 AMERIPRISE FINANCIAL INC 204,653 18,985,000 0.52%
41 CITADEL ADVISORS LLC 200,544 18,602,000 0.51%
42 PRUDENTIAL FINANCIAL INC 182,149 16,896,000 0.47%
43 SCOUT INVESTMENTS, INC. 181,432 16,830,000 0.46%
44 Nuveen Asset Management, LLC 180,862 16,777,000 0.46%
45 TIAA CREF INVESTMENT MANAGEMENT LLC 175,018 16,235,000 0.45%
46 CASTLEARK MANAGEMENT LLC 174,681 16,203,000 0.45%
47 OppenheimerFunds, Inc. 171,310 15,891,000 0.44%
48 BANK OF MONTREAL /CAN/ 160,849 14,920,000 0.41%
49 BlackRock Investment Management, LLC 155,431 14,418,000 0.40%
50 TWO SIGMA ADVISERS, LP 149,930 13,952,000 0.39%
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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.