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

Institutional Holders (2017Q1)
Portfolio Summary: 141 Institutional holders with a total value of $255,836,769.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Clearbridge Investments, LLC 14,428,856 55,840,000 21.83%
2 ORBIMED ADVISORS LLC 6,095,647 23,590,000 9.22%
3 BlackRock Finance, Inc. 5,368,099 20,774,000 8.12%
4 VANGUARD GROUP INC 4,110,431 15,907,000 6.22%
5 Redmile Group, LLC 3,984,734 15,421,000 6.03%
6 PRIMECAP MANAGEMENT CO/CA/ 3,966,000 15,348,000 6.00%
7 BAKER BROS. ADVISORS LP 3,015,353 11,669,000 4.56%
8 DEUTSCHE BANK AG\ 1,765,021 6,829,000 2.67%
9 WELLS FARGO & COMPANY/MN 1,620,279 6,270,000 2.45%
10 STATE STREET CORP 1,598,707 6,185,000 2.42%
11 NORGES BANK 1,530,772 5,924,000 2.32%
12 RENAISSANCE TECHNOLOGIES LLC 1,477,946 5,720,000 2.24%
13 PANAGORA ASSET MANAGEMENT INC 1,471,763 5,696,000 2.23%
14 BANK OF AMERICA CORP /DE/ 1,339,518 5,183,000 2.03%
15 MORGAN STANLEY 1,198,593 4,640,000 1.81%
16 MILLENNIUM MANAGEMENT LLC 1,106,695 4,283,000 1.67%
17 NORTHERN TRUST CORP 1,068,820 4,136,000 1.62%
18 SCHONFELD STRATEGIC ADVISORS LLC 1,025,176 3,968,000 1.55%
19 FMR LLC 802,029 3,104,000 1.21%
20 MACQUARIE GROUP LTD 700,000 2,709,000 1.06%
21 GEODE CAPITAL MANAGEMENT, LLC 678,343 2,625,000 1.03%
22 RAYMOND JAMES & ASSOCIATES 628,236 2,431,000 0.95%
23 GOLDMAN SACHS GROUP INC 588,544 2,277,000 0.89%
24 D. E. Shaw & Co., Inc. 484,908 1,877,000 0.73%
25 Bank of New York Mellon Corp 438,917 1,698,000 0.66%
26 AMERIPRISE FINANCIAL INC 394,770 1,528,000 0.60%
27 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 329,979 1,278,000 0.50%
28 NATIXIS ADVISORS, LLC 300,599 1,163,000 0.45%
29 KBC Group NV 299,613 1,160,000 0.45%
30 Fisher Asset Management, LLC 253,676 982,000 0.38%
31 TIAA CREF INVESTMENT MANAGEMENT LLC 244,602 947,000 0.37%
32 TEACHERS ADVISORS, LLC 189,543 734,000 0.29%
33 JPMORGAN CHASE & CO 187,230 725,000 0.28%
34 SUSQUEHANNA INTERNATIONAL GROUP, LLP 175,400 679,000 0.27% Put
35 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 165,950 642,000 0.25%
36 Swiss National Bank 159,400 617,000 0.24%
37 ALLIANCEBERNSTEIN L.P. 118,264 458,000 0.18%
38 TWIN FOCUS CAPITAL PARTNERS, LLC 113,216 438,000 0.17%
39 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 111,500 432,000 0.17%
40 D.A. DAVIDSON & CO. 105,690 409,000 0.16%
41 CITIGROUP INC 103,391 400,000 0.16%
42 RHUMBLINE ADVISERS 101,943 395,000 0.15%
43 UBS Group AG 99,967 387,000 0.15%
44 SUSQUEHANNA INTERNATIONAL GROUP, LLP 99,600 385,000 0.15% Call
45 STIFEL FINANCIAL CORP 103,815 382,000 0.15%
46 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 93,560 362,000 0.14%
47 GSA CAPITAL PARTNERS LLP 85,526 331,000 0.13%
48 NEW YORK STATE COMMON RETIREMENT FUND 84,301 326,000 0.13%
49 CREDIT SUISSE AG/ 73,568 284,000 0.11%
50 MANUFACTURERS LIFE INSURANCE COMPANY, THE 71,965 279,000 0.11%
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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.