Shareholder Holders Values ($) % O/S Shares
Institution 252 712 61.64 95,399,132
Mutual Fund 190 247 22.49 34,805,269
Shareholder Holders Values Change ($) % O/S Shares Change
Buyers 112 156.73 13.30 20,581,829
Sellers 101 -50.84 4.37 -6,764,586
Net -- 105.89 8.93 13,817,243
Shareholder Values ($) % O/S Shares
Top 10 Inst. 455 38.41 59,446,426
Top 20 Inst. 552.70 47.40 73,371,084
Top 50 Inst. 653.58 56.34 87,201,326
Total Inst. 653.58 56.34 87,201,326
Shareholder Holders Values ($) % O/S Shares
Index 24 172 14.50 22,447,958
AggresGr 1 1 0.10 147,639
CoreGrowth 42 39 3.43 5,315,240
Growth 10 1 0.13 201,277
IncomeValue 5 24 1.99 3,087,797
Yield 4 0 0.00 5,400
BrokerDealer 18 23 1.94 2,997,198
GARP 26 203 17.21 26,630,924
HedgeFund 23 85 7.16 11,089,543
SectorSpecific 2 103 8.73 13,512,078
Specialty 2 13 1.09 1,690,679
CoreValue 20 25 2.88 4,456,048
DeepValue 6 3 0.24 376,682
Momentum 1 0 0.00 4,218
Holder Shares Held % O/S Shares Change Filing Date
ClearBridge Investments, LLC 11,445,611 7.39 -1,426,085 09/30/2017
Redmile Group, LLC 8,061,497 5.21 2,848,761 09/30/2017
The Vanguard Group, Inc. 7,279,254 4.70 3,030,566 09/30/2017
State Street Global Advisors (US) 6,177,805 3.99 2,036,222 09/30/2017
Fidelity Management & Research Company 5,605,285 3.62 0 09/30/2017
OrbiMed Advisors, LLC 5,450,581 3.52 1,512,309 09/30/2017
BlackRock Institutional Trust Company, N.A. 5,004,766 3.23 101,807 09/30/2017
PRIMECAP Management Company 3,823,300 2.47 -59,200 09/30/2017
Millennium Management LLC 3,787,427 2.45 -242,030 09/30/2017
Franklin Advisers, Inc. 2,810,900 1.82 2,810,900 09/30/2017
Baker Bros. Advisors LP 2,688,489 1.74 -326,864 09/30/2017
Managed Account Advisors LLC 1,689,384 1.09 564,893 09/30/2017
Norges Bank Investment Management (NBIM) 1,530,772 0.99 0 12/31/2016
Pinnacle Associates Ltd. 1,466,679 0.95 -50,960 09/30/2017
Wells Fargo Advisors 1,414,304 0.91 -84,463 09/30/2017
Nuveen LLC 1,331,688 0.86 925,298 09/30/2017
Northern Trust Investments, Inc. 989,852 0.64 3,960 09/30/2017
Schonfeld Strategic Advisors LLC 958,845 0.62 -177,549 09/30/2017
T. Rowe Price Associates, Inc. 935,136 0.60 907,500 09/30/2017
PanAgora Asset Management Inc. 919,509 0.59 -633,629 09/30/2017
Geode Capital Management, L.L.C. 884,550 0.57 171,360 09/30/2017
Morgan Stanley Wealth Management 871,348 0.56 -26,570 09/30/2017
Macquarie Investment Management 850,000 0.55 0 09/30/2017
Arrowstreet Capital, Limited Partnership 817,616 0.53 803,216 09/30/2017
Enyedy (Mark J) 600,100 0.39 0 04/17/2017
EAM Investors, LLC 590,708 0.38 7,843 09/30/2017
Deutsche Asset Management Americas 586,687 0.38 68,406 09/30/2017
Medical Strategy GmbH 574,988 0.37 0 07/31/2017
Candriam Belgium S.A. 570,000 0.37 0 09/30/2017
Candriam Luxembourg S.A. 570,000 0.37 0 09/30/2017
Renaissance Technologies LLC 524,340 0.34 -198,000 09/30/2017
Chicago Equity Partners, LLC 490,635 0.32 272,315 09/30/2017
Invesco Advisers, Inc. 474,890 0.31 155,030 09/30/2017
Invesco PowerShares Capital Management LLC 474,398 0.31 458,072 09/30/2017
Raymond James & Associates, Inc. 457,754 0.30 -90,163 09/30/2017
Charles Schwab Investment Management, Inc. 441,445 0.29 109,547 09/30/2017
Oppenheim Asset Management Services S.à r.l. 409,862 0.26 0 09/30/2017
Two Sigma Investments, LP 409,709 0.26 361,242 09/30/2017
Jacobs Levy Equity Management, Inc. 337,024 0.22 -13,610 09/30/2017
Wellington Management Company, LLP 311,763 0.20 311,763 09/30/2017
BlackRock Investment Management, LLC 298,088 0.19 -13,029 09/30/2017
D. E. Shaw & Co., L.P. 293,748 0.19 293,748 09/30/2017
Gregory (Richard J) 276,481 0.18 0 04/17/2017
APG Asset Management 275,167 0.18 34,867 03/31/2017
BNY Mellon Asset Management 249,853 0.16 -2,502 09/30/2017
Fisher Investments 248,576 0.16 -7,630 09/30/2017
Gotham Asset Management, LLC 243,949 0.16 243,949 09/30/2017
Citi Investment Research (US) 243,428 0.16 -396 09/30/2017
Allianz Global Investors U.S. LLC 232,635 0.15 232,635 09/30/2017
Fernwood Investment Management, LLC. 220,500 0.14 2,000 09/30/2017

Ownership data is current as of filing date shown and is provided by Thompson Reuters, a third party service, and ImmunoGen, Inc. does not maintain or provide information directly to this service.


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