Notable Holders of Immunogen, Inc. (IMGN)
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* Does Not Fully Represent All Holders
| Fund | Title | Shares | % Owned | Source |
|---|---|---|---|---|
| Fidelity Investments | COM | 11,456,778 | 15.00% | 13F |
| PRIMECAP | COM | 11,255,969 | 14.74% | 13F |
| Clearbridge Advisors, LLC | COM | 6,392,107 | 8.37% | 13F |
| BB BIOTECH AG | COM | 4,000,000 | 5.24% | 13F |
| VANGUARD GROUP INC | COM | 3,504,443 | 4.59% | 13F |
| Wellington | COM | 2,675,400 | 3.50% | 13F |
| STATE STREET CORP | COMMON STOCK | 2,182,283 | 2.86% | 13F |
| BlackRock Institutional Trust Company, N.A. | COM | 1,976,053 | 2.59% | 13F |
| BlackRock Fund Advisors | COM | 1,834,220 | 2.40% | 13F |
| JANUS CAPITAL MANAGEMENT LLC | COM | 1,819,303 | 2.38% | 13F |
| MORGAN STANLEY | COM | 1,229,823 | 1.61% | 13F |
| DEUTSCHE BANK AG\ | COM | 1,149,320 | 1.50% | 13F |
| GRANAHAN INVESTMENT MANAGEMENT INC/MA | COM | 1,144,140 | 1.50% | 13F |
| NORTHERN TRUST CORP | COM | 995,922 | 1.30% | 13F |
| PINNACLE ASSOCIATES LTD | COM | 948,045 | 1.24% | 13F |
| Ulys, LLC | COM | 475,000 | 0.62% | 13F |
| RENAISSANCE TECHNOLOGIES LLC | COM | 430,240 | 0.56% | 13F |
| TIAA CREF INVESTMENT MANAGEMENT LLC | COM | 389,340 | 0.51% | 13F |
| Platte River Capital LLC | COM | 378,979 | 0.50% | 13F |
| GEODE CAPITAL MANAGEMENT LLC | COM | 234,853 | 0.31% | 13F |
| BlackRock Investment Management, LLC | COM | 233,506 | 0.31% | 13F |
| DIMENSIONAL FUND ADVISORS LP | COM | 200,848 | 0.26% | 13F |
| CITIGROUP INC | COM | 160,169 | 0.21% | 13F |
| SCHWAB CHARLES INVESTMENT MANAGEMENT INC | COM | 145,634 | 0.19% | 13F |
| Goldman Sachs Asset Management, L.P. | CMN | 143,040 | 0.19% | 13F |
| JPMORGAN CHASE & CO | COMMON | 108,567 | 0.14% | 13F |
| MILLENNIUM MANAGEMENT LLC | COM | 103,387 | 0.14% | 13F |
| GUGGENHEIM CAPITAL LLC | COM | 88,385 | 0.12% | 13F |
| CREDIT SUISSE AG/ | COM | 85,590 | 0.11% | 13F |
| TEACHERS ADVISORS INC | COM | 68,846 | 0.09% | 13F |
| OXFORD ASSET MANAGEMENT | COM | 64,766 | 0.08% | 13F |
| CAXTON ASSOCIATES LP | COM | 64,082 | 0.08% | 13F |
| RAYMOND JAMES & ASSOCIATES | COM | 59,729 | 0.08% | 13F |
| Manulife Asset Management (North America) Ltd | COM | 57,806 | 0.08% | 13F |
| AMERICAN INTERNATIONAL GROUP INC | COM | 55,167 | 0.07% | 13F |
| Janney Montgomery Scott LLC | COMMON STOCK | 53,965 | 0.07% | 13F |
| AQR CAPITAL MANAGEMENT LLC | COM | 53,000 | 0.07% | 13F |
| MACQUARIE GROUP LTD | COMMON STOCK | 52,600 | 0.07% | 13F |
| BLACKROCK ADVISORS LLC | COM | 51,291 | 0.07% | 13F |
| PENN MUTUAL LIFE INSURANCE CO | COM | 46,850 | 0.06% | 13F |
| COMERICA BANK | COM | 46,187 | 0.06% | 13F |
| UBS AG | COM | 46,032 | 0.06% | 13F |
| Platinum Investment Management Ltd. | COM | 45,600 | 0.06% | 13F |
| Citadel | CMN | 41,668 | 0.05% | 13F |
| ING INVESTMENT MANAGEMENT CO | COM | 34,060 | 0.04% | 13F |
| UNITED SERVICES AUTOMOBILE ASSOCIATION | COMMON | 32,500 | 0.04% | 13F |
| PRINCIPAL FINANCIAL GROUP INC | COM | 31,425 | 0.04% | 13F |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM | * IMMUNOGEN INC COM | 30,700 | 0.04% | 13F |
| Evercore Wealth Management, LLC | COM | 30,000 | 0.04% | 13F |
| BLAIR WILLIAM & CO/IL | COM | 26,000 | 0.03% | 13F |
| PARAMETRIC PORTFOLIO ASSOCIATES | Common Stock | 24,808 | 0.03% | 13F |
| Numeric Investors LLC | COMM | 24,000 | 0.03% | 13F |
| ROYAL BANK OF CANADA \ | COM | 22,964 | 0.03% | 13F |
| Carlson Capital, L.P. | COM | 19,800 | 0.03% | 13F |
| PEAK6 Investments, L.P. | COM | 18,782 | 0.02% | 13F |
| Commonwealth Equity Services, Inc | COM | 16,000 | 0.02% | 13F |
| Horizon Kinetics LLC | 14,000 | 0.02% | 13F | |
| SG Americas Securities, LLC | 13,123 | 0.02% | 13F | |
| Neuberger Berman Group LLC | COMMON STOCK | 11,682 | 0.02% | 13F |
| ALLSTATE CORP | COMMON | 10,280 | 0.01% | 13F |
| AMERIPRISE FINANCIAL INC | COM | 8,113 | 0.01% | 13F |
