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IMMUNOGEN INCORPORATED
IMMUNOGEN INCORPORATED. Institutional holdings reported to the SEC.

Institutional Holders (2016Q1)
Portfolio Summary: 152 Institutional holders with a total value of $644,867,142.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Clearbridge Investments, LLC 14,541,891 123,897,000 19.21%
2 PRIMECAP MANAGEMENT CO/CA/ 12,867,483 109,631,000 17.00%
3 VANGUARD GROUP INC 6,708,705 57,159,000 8.86%
4 ORBIMED ADVISORS LLC 6,095,647 51,935,000 8.05%
5 FMR LLC 5,514,629 46,985,000 7.29%
6 BAKER BROS. ADVISORS LP 4,452,445 37,935,000 5.88%
7 BlackRock Fund Advisors 3,194,295 27,215,000 4.22%
8 STATE STREET CORP 2,576,027 21,950,000 3.40%
9 BlackRock Institutional Trust Company, N.A. 2,124,044 18,097,000 2.81%
10 NORGES BANK 1,530,772 13,043,000 2.02%
11 WELLS FARGO & COMPANY/MN 1,406,179 11,981,000 1.86%
12 BANK OF AMERICA CORP /DE/ 1,051,773 8,961,000 1.39%
13 NORTHERN TRUST CORP 1,037,003 8,835,000 1.37%
14 Invesco Ltd. 955,724 8,143,000 1.26%
15 FRANKLIN RESOURCES INC 946,301 8,062,000 1.25%
16 MORGAN STANLEY 889,268 7,577,000 1.17%
17 RAYMOND JAMES & ASSOCIATES 627,424 5,346,000 0.83%
18 GEODE CAPITAL MANAGEMENT, LLC 620,395 5,285,000 0.82%
19 MACQUARIE GROUP LTD 480,000 4,090,000 0.63%
20 Bank of New York Mellon Corp 467,157 3,980,000 0.62%
21 BlackRock Investment Management, LLC 304,129 2,591,000 0.40%
22 TIAA CREF INVESTMENT MANAGEMENT LLC 301,645 2,570,000 0.40%
23 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 295,082 2,515,000 0.39%
24 WELLINGTON MANAGEMENT GROUP LLP 279,713 2,383,000 0.37%
25 Fisher Asset Management, LLC 244,225 2,244,000 0.35%
26 DEUTSCHE BANK AG\ 256,668 2,185,000 0.34%
27 NEXTHERA CAPITAL LP 228,000 1,943,000 0.30%
28 GUGGENHEIM CAPITAL LLC 227,055 1,935,000 0.30%
29 JACOBS LEVY EQUITY MANAGEMENT, INC 225,900 1,925,000 0.30%
30 Candriam S.C.A. 208,000 1,763,000 0.27%
31 NATIXIS ADVISORS, LLC 188,207 1,604,000 0.25%
32 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 182,577 1,556,000 0.24%
33 PRUDENTIAL FINANCIAL INC 170,832 1,455,000 0.23%
34 Lumbard & Kellner, LLC 168,315 1,434,000 0.22%
35 CITIGROUP INC 166,209 1,415,000 0.22%
36 SUSQUEHANNA INTERNATIONAL GROUP, LLP 163,191 1,390,000 0.22%
37 Swiss National Bank 156,100 1,289,000 0.20%
38 ALLIANCEBERNSTEIN L.P. 145,964 1,244,000 0.19%
39 TEACHERS ADVISORS, LLC 129,509 1,103,000 0.17%
40 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 128,200 1,092,000 0.17%
41 PDT Partners, LLC 127,900 1,090,000 0.17%
42 CORNERSTONE CAPITAL MANAGEMENT HOLDINGS LLC. 127,300 1,085,000 0.17%
43 TWIN FOCUS CAPITAL PARTNERS, LLC 113,216 965,000 0.15%
44 CREDIT SUISSE AG/ 110,776 944,000 0.15%
45 GOLDMAN SACHS GROUP INC 107,000 912,000 0.14% Call
46 GOLDMAN SACHS GROUP INC 101,100 861,000 0.13% Put
47 ALPS ADVISORS INC 97,910 834,000 0.13%
48 BlackRock Group LTD 96,428 821,000 0.13%
49 RHUMBLINE ADVISERS 94,059 801,000 0.12%
50 SUSQUEHANNA INTERNATIONAL GROUP, LLP 93,900 800,000 0.12% Call
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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.