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

Institutional Holders (2017Q1)
Portfolio Summary: 113 Institutional holders with a total value of $250,133,069.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Clearbridge Investments, LLC 14,428,856 55,840,000 22.32%
2 ORBIMED ADVISORS LLC 6,095,647 23,590,000 9.43%
3 BlackRock Finance, Inc. 5,368,099 20,774,000 8.31%
4 VANGUARD GROUP INC 4,110,431 15,907,000 6.36%
5 Redmile Group, LLC 3,984,734 15,421,000 6.17%
6 PRIMECAP MANAGEMENT CO/CA/ 3,966,000 15,348,000 6.14%
7 BAKER BROS. ADVISORS LP 3,015,353 11,669,000 4.67%
8 DEUTSCHE BANK AG\ 1,765,021 6,829,000 2.73%
9 WELLS FARGO & COMPANY/MN 1,620,279 6,270,000 2.51%
10 STATE STREET CORP 1,598,707 6,185,000 2.47%
11 NORGES BANK 1,530,772 5,924,000 2.37%
12 RENAISSANCE TECHNOLOGIES LLC 1,477,946 5,720,000 2.29%
13 PANAGORA ASSET MANAGEMENT INC 1,471,763 5,696,000 2.28%
14 BANK OF AMERICA CORP /DE/ 1,339,518 5,183,000 2.07%
15 MORGAN STANLEY 1,198,593 4,640,000 1.86%
16 MILLENNIUM MANAGEMENT LLC 1,106,695 4,283,000 1.71%
17 NORTHERN TRUST CORP 1,068,820 4,136,000 1.65%
18 FMR LLC 802,029 3,104,000 1.24%
19 MACQUARIE GROUP LTD 700,000 2,709,000 1.08%
20 GEODE CAPITAL MANAGEMENT, LLC 678,343 2,625,000 1.05%
21 RAYMOND JAMES & ASSOCIATES 628,236 2,431,000 0.97%
22 GOLDMAN SACHS GROUP INC 588,544 2,277,000 0.91%
23 D. E. Shaw & Co., Inc. 484,908 1,877,000 0.75%
24 Bank of New York Mellon Corp 438,917 1,698,000 0.68%
25 AMERIPRISE FINANCIAL INC 394,770 1,528,000 0.61%
26 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 329,979 1,278,000 0.51%
27 NATIXIS ADVISORS, LLC 300,599 1,163,000 0.46%
28 KBC Group NV 299,613 1,160,000 0.46%
29 Fisher Asset Management, LLC 253,676 982,000 0.39%
30 TIAA CREF INVESTMENT MANAGEMENT LLC 244,602 947,000 0.38%
31 TEACHERS ADVISORS, LLC 189,543 734,000 0.29%
32 JPMORGAN CHASE & CO 187,230 725,000 0.29%
33 SUSQUEHANNA INTERNATIONAL GROUP, LLP 175,400 679,000 0.27% Put
34 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 165,950 642,000 0.26%
35 ALLIANCEBERNSTEIN L.P. 118,264 458,000 0.18%
36 TWIN FOCUS CAPITAL PARTNERS, LLC 113,216 438,000 0.18%
37 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 111,500 432,000 0.17%
38 D.A. DAVIDSON & CO. 105,690 409,000 0.16%
39 CITIGROUP INC 103,391 400,000 0.16%
40 RHUMBLINE ADVISERS 101,943 395,000 0.16%
41 SUSQUEHANNA INTERNATIONAL GROUP, LLP 99,600 385,000 0.15% Call
42 STIFEL FINANCIAL CORP 103,815 382,000 0.15%
43 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 93,560 362,000 0.14%
44 GSA CAPITAL PARTNERS LLP 85,526 331,000 0.13%
45 NEW YORK STATE COMMON RETIREMENT FUND 84,301 326,000 0.13%
46 CREDIT SUISSE AG/ 73,568 284,000 0.11%
47 MANUFACTURERS LIFE INSURANCE COMPANY, THE 71,965 279,000 0.11%
48 Nuveen Asset Management, LLC 68,928 267,000 0.11%
49 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 68,097 263,535 0.11%
50 METROPOLITAN LIFE INSURANCE CO/NY 66,517 257,000 0.10%
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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.