ImmunoGen, Inc.
IMGNDelisted Feb 12, 2024- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000855654
ImmunoGen, Inc. was delisted on Feb 12, 2024; its insiders filed their last Form 4 on Feb 12, 2024; 327 institutions reported holding it in 13F filings for Q4 2023, worth $7.54B in total; Maverick Capital was the only superinvestor holding it.
13F holders, Q4 2023
Institutional positions in ImmunoGen, Inc. as of Dec 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
IMGN is no longer listed, so this page shows Q4 2023. 13F filings for later quarters list far fewer holders.
- Institutional holders
- 327
- +52 vs. Q3 2023
- Shares held
- 254.1M
- +8.75M (+3.6%) vs. Q3 2023
- Total value
- $7.54B
- +$3.63B (+93.0%) vs. Q3 2023
- New holders
- 121
- 70 more added
- Sold out
- 69
- 102 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IMGN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1 | $269 |
| Q1 2026 | 1 | $269 |
| Q4 2025 | 1 | $269 |
| Q3 2025 | 1 | $269 |
| Q2 2025 | 1 | $269 |
| Q1 2025 | 1 | $269 |
| Q4 2024 | 1 | $269 |
| Q3 2024 | 1 | $269 |
| Q2 2024 | 1 | $31 |
| Q1 2024 | 3 | $27.8K |
| Q4 2023 | 327 | $7.54B |
| Q3 2023 | 276 | $3.91B |
| Q2 2023 | 266 | $4.24B |
| Q1 2023 | 191 | $806.0M |
| Q4 2022 | 204 | $1.01B |
| Q3 2022 | 222 | $942.2M |
| Q2 2022 | 216 | $882.4M |
| Q1 2022 | 217 | $925.0M |
| Q4 2021 | 236 | $1.41B |
| Q3 2021 | 217 | $1.00B |
| Q2 2021 | 214 | $1.19B |
| Q1 2021 | 217 | $1.48B |
Institutions, Q4 2023
Shares, value and share of portfolio for each institution holding ImmunoGen, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 25,466,950 | $755.1M | 0.02% | +984,795+4.0% | Added |
| Ra Capital Management, L.P. | 23,750,601 | $704.2M | 11.00% | +10,428,313+78.3% | Added |
| BlackRock Inc. | 21,824,392 | $647.1M | 0.02% | +1,550,533+7.6% | Added |
| Redmile Group, LLC | 16,423,922 | $487.0M | 17.42% | −1,079,495−6.2% | Reduced |
| Janus Henderson Group PLC | 11,043,986 | $327.5M | 0.20% | −6,640,830−37.6% | Reduced |
| State Street Corp | 8,075,671 | $239.4M | 0.01% | −1,476,181−15.5% | Reduced |
| Fairmount Funds Management LLC | 5,929,592 | $175.8M | 18.58% | 00.0% | Unchanged |
| Pentwater Capital Management LP | 5,662,500 | $167.9M | 3.15% | +5,662,500 | New |
| Norges Bank | 5,539,334 | $164.2M | 0.03% | +3,484,245+169.5% | Added |
| Geode Capital Management, LLC | 5,382,875 | $159.6M | 0.02% | +482,900+9.9% | Added |
| FIL Ltd | 5,360,000 | $158.9M | 0.17% | +5,360,000 | New |
| D. E. Shaw & Co., Inc. | 4,522,797 | $134.1M | 0.19% | −2,472,442−35.3% | Reduced |
| Millennium Management LLC | 4,473,868 | $132.7M | 0.13% | +2,868,154+178.6% | Added |
| Morgan Stanley | 4,109,177 | $121.8M | 0.01% | −719,914−14.9% | Reduced |
| Davidson Kempner Capital Management LP | 3,252,001 | $96.5M | 1.70% | +3,252,001 | New |
| Voloridge Investment Management, LLC | 3,221,231 | $95.5M | 0.38% | +708,980+28.2% | Added |
| Boxer Capital, LLC | 2,961,000 | $87.8M | 4.38% | 00.0% | Unchanged |
| Maverick Capital LtdSuperinvestorMaverick Capital | 2,493,217 | $73.9M | 1.52% | −25,310−1.0% | Reduced |
| Northern Trust Corp | 2,328,671 | $69.0M | 0.01% | −42,193−1.8% | Reduced |
| TIG Advisors, LLC | 2,313,670 | $68.6M | 10.29% | +2,313,670 | New |
| Tang Capital Management LLC | 2,199,137 | $65.2M | 6.02% | +699,137+46.6% | Added |
| JPMorgan Chase & Co | 2,063,254 | $61.2M | 0.01% | −135,173−6.1% | Reduced |
| Nuveen Asset Management, LLC | 2,052,894 | $60.9M | 0.02% | −1,055,145−33.9% | Reduced |
| Omni Event Management Ltd | 2,036,155 | $60.4M | 9.61% | +2,036,155 | New |
| Wellington Management Group LLP | 1,954,413 | $57.9M | 0.01% | −11,304,584−85.3% | Reduced |
| UBS Oconnor LLC | 1,915,452 | $56.8M | 1.80% | +1,915,452 | New |
| Charles Schwab Investment Management Inc | 1,892,446 | $56.1M | 0.01% | +61,871+3.4% | Added |
| Avidity Partners Management LP | 1,829,215 | $54.2M | 2.07% | −88,692−4.6% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 1,785,296 | $52.9M | 0.19% | +1,485,296+495.1% | Added |
| Alpine Associates Management Inc. | 1,761,300 | $52.2M | 2.68% | +1,761,300 | New |
| Emerald Advisers, LLC | 1,744,981 | $51.7M | 2.21% | −66,325−3.7% | Reduced |
| Renaissance Technologies LLC | 1,631,240 | $48.4M | 0.07% | +896,600+122.0% | Added |
| Magnetar Financial LLC | 1,629,285 | $48.3M | 1.23% | +1,629,285 | New |
| Sofinnova Investments, Inc. | 1,546,902 | $45.9M | 2.57% | −498,300−24.4% | Reduced |
| Alliancebernstein L.P. | 1,507,809 | $44.7M | 0.02% | +1,207,295+401.7% | Added |
| Balyasny Asset Management LLC | 1,496,758 | $44.4M | 0.12% | +1,484,838+12,456.7% | Added |
| CNH Partners LLC | 1,429,078 | $42.4M | 1.71% | +1,429,078 | New |
| Kynam Capital Management, LP | 1,422,503 | $42.2M | 4.77% | +1,422,503 | New |
| Affinity Asset Advisors, LLC | 1,404,608 | $41.6M | 8.30% | +1,404,608 | New |
| QVT Financial LP | 1,375,900 | $40.8M | 2.46% | 00.0% | Unchanged |
| Westchester Capital Management, LLC | 1,364,927 | $40.5M | 1.63% | +1,364,927 | New |
| Taconic Capital Advisors LP | 1,325,000 | $39.3M | 3.79% | +1,325,000 | New |
| Goldman Sachs Group Inc | 1,189,485 | $35.3M | 0.01% | −49,614−4.0% | Reduced |
| Emerald Mutual Fund Advisers Trust | 1,188,209 | $35.2M | 1.87% | −277,854−19.0% | Reduced |
| Marshall Wace, LLP | 1,187,027 | $35.2M | 0.07% | +1,187,027 | New |
| Artisan Partners Limited Partnership | 1,172,323 | $34.8M | 0.05% | −2,552,260−68.5% | Reduced |
| Principal Financial Group Inc | 1,127,402 | $33.4M | 0.02% | +142,738+14.5% | Added |
| Candriam Luxembourg S.C.A. | 1,122,598 | $33.3M | 0.23% | +100.0% | Added |
| Price T Rowe Associates Inc | 1,088,213 | $32.3M | 0.00% | −2,818,157−72.1% | Reduced |
| Deutsche Bank AG | 1,065,880 | $31.6M | 0.02% | +840,814+373.6% | Added |
| Bank of New York Mellon Corp | 1,063,500 | $31.5M | 0.01% | −732,610−40.8% | Reduced |
| Pinnacle Associates Ltd | 1,011,792 | $30.0M | 0.50% | −4,364−0.4% | Reduced |
| Pictet Asset Management Holding SA | 975,962 | $28.9M | 0.03% | −2,732,177−73.7% | Reduced |
| Adage Capital Partners GP, L.L.C. | 971,928 | $28.8M | 0.06% | +771,928+386.0% | Added |
| Water Island Capital LLC | 893,758 | $26.5M | 2.72% | +893,758 | New |
| Invesco Ltd. | 885,323 | $26.2M | 0.01% | −200,845−18.5% | Reduced |
| Avoro Capital Advisors LLC | 875,000 | $25.9M | 0.36% | +875,000 | New |
| Farallon Capital Management, L.L.C. | 842,000 | $25.0M | 0.16% | +842,000 | New |
| American Century Companies Inc | 836,134 | $24.8M | 0.02% | +137,018+19.6% | Added |
| Citadel Advisors LLC | 795,458 | $23.6M | 0.02% | −492,084−38.2% | Reduced |
| Bank of America Corp | 780,279 | $23.1M | 0.00% | +238,477+44.0% | Added |
| Eventide Asset Management, LLC | 763,000 | $22.6M | 0.37% | −537,000−41.3% | Reduced |
| Rock Springs Capital Management LP | 759,365 | $22.5M | 0.56% | 00.0% | Unchanged |
| Eversept Partners, LP | 748,950 | $22.2M | 2.18% | +748,950 | New |
| Gabelli Funds LLC | 745,500 | $22.1M | 0.17% | +745,500 | New |
| Susquehanna International Group, LLP | 736,034 | $21.8M | 0.04% | −238,853−24.5% | Reduced |
| New York Life Investment Management LLC | 682,396 | $20.2M | 0.21% | +682,396 | New |
| Voya Investment Management LLC | 677,450 | $20.1M | 0.02% | +162,314+31.5% | Added |
| Decheng Capital LLC | 659,928 | $19.6M | 5.47% | +659,928 | New |
| Sio Capital Management, LLC | 644,366 | $19.1M | 4.92% | +411,615+176.8% | Added |
| Barclays PLC | 642,156 | $19.0M | 0.01% | +299,429+87.4% | Added |
| Jane Street Group, LLC | 634,353 | $18.8M | 0.02% | −283,411−30.9% | Reduced |
| Gabelli & Co Investment Advisers, Inc. | 624,750 | $18.5M | 3.48% | +624,750 | New |
| Superstring Capital Management LP | 598,072 | $17.7M | 12.66% | +598,072 | New |
| Vivaldi Asset Management, LLC | 596,720 | $17.7M | 1.36% | +596,720 | New |
| Canada Pension Plan Investment Board | 586,990 | $17.4M | 0.02% | +586,990 | New |
| Man Group plc | 535,000 | $15.9M | 0.05% | – | – |
| Melqart Asset Management (UK) Ltd | 531,324 | $15.8M | 1.27% | +531,324 | New |
| Two Sigma Advisers, LP | 523,118 | $15.5M | 0.04% | −771,400−59.6% | Reduced |
| HSBC Holdings PLC | 519,779 | $15.4M | 0.01% | +519,779 | New |
| CM Management, LLC | 500,000 | $14.8M | 11.91% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 500,000 | $14.8M | 0.69% | +500,000 | New |
| Swiss National Bank | 480,800 | $14.3M | 0.01% | 00.0% | Unchanged |
| Carlson Capital L P | 466,188 | $13.8M | 1.11% | +466,188 | New |
| Slotnik Capital, LLC | 460,000 | $13.6M | 9.47% | +460,000 | New |
| FMR LLC | 456,168 | $13.5M | 0.00% | −5,332,387−92.1% | Reduced |
| Dimensional Fund Advisors LP | 454,213 | $13.5M | 0.00% | −726,531−61.5% | Reduced |
| Credit Suisse AG | 417,277 | $12.4M | 0.01% | +124,236+42.4% | Added |
| Segantii Capital Management Ltd | 415,000 | $12.3M | 0.72% | +415,000 | New |
| Panagora Asset Management Inc | 409,658 | $12.1M | 0.07% | −688,759−62.7% | Reduced |
| Woodline Partners LP | 400,000 | $11.9M | 0.13% | −2,033,161−83.6% | Reduced |
| Two Sigma Investments, LP | 363,900 | $10.8M | 0.03% | −1,264,317−77.7% | Reduced |
| Rhumbline Advisers | 361,594 | $10.7M | 0.01% | −2,802−0.8% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 356,997 | $10.6M | 0.61% | −166,077−31.8% | Reduced |
| Cubist Systematic Strategies, LLC | 340,346 | $10.1M | 0.12% | +313,550+1,170.1% | Added |
| Citigroup Inc | 337,743 | $10.0M | 0.01% | +92,192+37.5% | Added |
| UBS Asset Management Americas Inc | 310,789 | $9.21M | 0.00% | +4,769+1.6% | Added |
| First Trust Advisors LP | 307,539 | $9.12M | 0.01% | +307,539 | New |
| Rafferty Asset Management, LLC | 307,369 | $9.11M | 0.04% | −259,616−45.8% | Reduced |
| Capital Fund Management S.A. | 297,985 | $8.84M | 0.11% | +233,841+364.6% | Added |