IGM BIOSCIENCES INC IGMS
COM · Common Stock · CUSIP 449585108
93
institutional holders
17.7m
shares reported held*
$401.9mreported value*
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($5.0k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $22.73. Options: 6 managers hold calls ($1.5m notional), 3 hold puts ($670.0k).
Biggest calls
| Artal Group S.A. | — | $1.1m50.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | $316.0k13.9k shares |
| SIMPLEX TRADING, LLC | — | $56.0k2.5k shares |
| GROUP ONE TRADING LLC | — | $23.0k1.0k shares |
| Cutler Group LLC / CA | — | $4.0k1.3k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | — | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | — | $650.0k28.6k shares |
| SIMPLEX TRADING, LLC | — | $20.0k900 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | — | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| PRICE T ROWE ASSOCIATES INC /MD/ 13G · institution +10.3 pts · filed 2025-02-14 | 10.5% |
Fell to 5% or below in the last year: GLAZER CAPITAL, LLC (0.0%, 2025-11-13)
Holders, Q3 2022
| Manager | Shares | Change |
|---|---|---|
| Redmile Group, LLC 2.94% of their portfolio | 3.3m $75.8m | — |
| BAKER BROS. ADVISORS LP 0.47% of their portfolio | 3.2m $71.8m | — |
| Artal Group S.A. 2.91% of their portfolio | 2.5m $55.7m | — |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 2.2m $50.4m | — |
| ALKEON CAPITAL MANAGEMENT LLC 0.15% of their portfolio | 961.6k $21.9m | — |
| BlackRock Inc. 0.00% of their portfolio | 739.9k $16.8m | — |
| T. Rowe Price Investment Management, Inc. 0.01% of their portfolio | 586.7k $13.3m | — |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 524.3k $11.9m | — |
| VANGUARD GROUP INC 0.00% of their portfolio | 520.0k $11.8m | — |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 337.2k $7.7m | — |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 291.2k $6.6m | — |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 249.3k $5.7m | — |
| MARSHALL WACE, LLP 0.01% of their portfolio | 246.7k $5.6m | — |
| STATE STREET CORP 0.00% of their portfolio | 221.9k $5.0m | — |
| Woodline Partners LP 0.07% of their portfolio | 200.0k $4.5m | — |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 183.0k $4.2m | — |
| SAMSARA BIOCAPITAL, LLC 0.82% of their portfolio | 154.7k $3.5m | — |
| NORTHERN TRUST CORP 0.00% of their portfolio | 113.6k $2.6m | — |
| MORGAN STANLEY 0.00% of their portfolio | 100.0k $2.3m | — |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 80.5k $1.8m | — |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 70.1k $1.6m | — |
| Bank of New York Mellon Corp 0.00% of their portfolio | 66.3k $1.5m | — |
| Bruce & Co., Inc. 0.34% of their portfolio | 55.0k $1.2m | — |
| Candriam S.C.A. 0.01% of their portfolio | 48.8k $1.1m | — |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 45.7k $1.0m | — |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 45.2k $1.0m | — |
| Vident Investment Advisory, LLC 0.03% of their portfolio | 44.2k $1.0m | — |
| Eagle Bay Advisors LLC 0.59% of their portfolio | 41.6k $947.0k | — |
| RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio | 40.6k $924.0k | — |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio | 38.9k $885.0k | — |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 37.6k $746.0k | — |
| TD Asset Management Inc 0.00% of their portfolio | 32.6k $633.0k | — |
| SIMPLEX TRADING, LLC 0.03% of their portfolio | 31.8k $722.0k | — |
| Jump Financial, LLC 0.02% of their portfolio | 26.9k $612.0k | — |
| ExodusPoint Capital Management, LP 0.01% of their portfolio | 25.5k $580.0k | — |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 24.3k $552.0k | — |
| Swiss National Bank 0.00% of their portfolio | 22.7k $516.0k | — |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 21.7k $493.0k | — |
| PUTNAM INVESTMENTS LLC 0.00% of their portfolio | 20.2k $460.0k | — |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 19.8k $450.0k | — |
| New York Life Investment Management LLC 0.01% of their portfolio | 18.8k $428.0k | — |
| GSA CAPITAL PARTNERS LLP 0.05% of their portfolio | 18.2k $413.0k | — |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 14.7k $335.0k | — |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 14.2k $324.0k | — |
| PDT Partners, LLC 0.05% of their portfolio | 13.1k $298.0k | — |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 12.6k $287.0k | — |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 12.4k $283.0k | — |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 11.6k $264.8k | — |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 11.0k $250.0k | — |
| Delphia (USA) Inc. 0.26% of their portfolio | 10.2k $232.0k | — |
| Corton Capital Inc. 0.28% of their portfolio | 10.0k $227.0k | — |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 9.8k $222.0k | — |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 9.4k $213.0k | — |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 9.3k $211.0k | — |
| DekaBank Deutsche Girozentrale 0.00% of their portfolio | 9.1k $176.0k | — |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 7.9k $179.0k | — |
| VIRTUS ADVISERS, LLC 0.07% of their portfolio | 7.3k $166.0k | — |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 6.5k $148.0k | — |
| SG Americas Securities, LLC 0.00% of their portfolio | 6.3k $144.0k | — |
| MetLife Investment Management, LLC 0.00% of their portfolio | 5.7k $129.7k | — |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 5.4k $124.0k | — |
| AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio | 5.0k $114.0k | — |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 4.3k $99.0k | — |
| Legal & General Group Plc 0.00% of their portfolio | 3.6k $83.0k | — |
| Quantbot Technologies LP 0.01% of their portfolio | 3.6k $81.0k | — |
| Allspring Global Investments Holdings, LLC 0.00% of their portfolio | 2.7k $62.0k | — |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 2.0k $46.0k | — |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 1.9k $43.0k | — |
| AMALGAMATED BANK 0.00% of their portfolio | 1.6k $36.0k | — |
| US BANCORP \DE\ 0.00% of their portfolio | 1.5k $34.0k | — |
| SIGNATUREFD, LLC 0.00% of their portfolio | 890 $20.0k | — |
| Lindbrook Capital, LLC 0.00% of their portfolio | 760 $17.0k | — |
| GROUP ONE TRADING LLC 0.00% of their portfolio | 756 $17.0k | — |
| CITIGROUP INC 0.00% of their portfolio | 741 $17.0k | — |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 627 $14.0k | — |
| Metropolitan Life Insurance Co/NY 0.00% of their portfolio | 626 $14.2k | — |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 569 $13.0k | — |
| FMR LLC 0.00% of their portfolio | 529 $12.0k | — |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 409 $9.0k | — |
| Endurance Wealth Management, Inc. 0.00% of their portfolio | 300 $7.0k | — |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 272 $6.0k | — |
| UBS Group AG 0.00% of their portfolio | 240 $5.0k | — |
| Point72 Hong Kong Ltd 0.00% of their portfolio | 238 $5.0k | — |
| PFS Partners, LLC 0.01% of their portfolio | 230 $5.2k | — |
| Cutler Group LLC / CA 0.00% of their portfolio | 110 $2.0k | — |
| WIPFLI FINANCIAL ADVISORS LLC, 0.00% of their portfolio | 108 $2.0k | — |
| QUADRANT CAPITAL GROUP LLC 0.00% of their portfolio | 96 $2.0k | — |
| Daiwa Securities Group Inc. 0.00% of their portfolio | 88 $2.0k | — |
| Ellevest, Inc. 0.00% of their portfolio | 71 $2.0k | — |
| Parallel Advisors, LLC 0.00% of their portfolio | 13 $0 | — |
| DARK FOREST CAPITAL MANAGEMENT LP 0.00% of their portfolio | 2 $0 | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | — |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 0 $13.0k | — |