IGM Biosciences, Inc. - 449585108
Detailed investor-level table based on 13F positions.
Early Q3 2025 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP | History | Added to | 4,096,210 | 4,587 | 0.04% | 0.05% | 1 | +953 | 0.02% | Q2 2025 | Aug 14, 2025 |
| Siren, L.L.C. | History | No change | 3,255,826 | 3,646 | 0.19% | 0.21% | 2 | 0 | 0.0% | Q2 2025 | Aug 13, 2025 |
| Redmile Group, LLC | History | New | 2,952,131 | 3,306 | 0.35% | — | 3 | +2,952,131 | New | Q2 2025 | Aug 14, 2025 |
| Sanofi | History | New | 1,438,975 | 1,611 | 0.92% | — | 4 | +1,438,975 | New | Q2 2025 | Jul 29, 2025 |
| GOLDMAN SACHS GROUP INC | History | Added to | 855,286 | 957 | 0.0% | 0.0% | 5 | +61,900 | 7.8% | Q2 2025 | Aug 14, 2025 |
| VANGUARD GROUP INC | History | Reduced | 767,154 | 859 | 0.0% | 0.0% | 6 | -108,415 | -12.38% | Q2 2025 | Aug 11, 2025 |
| BlackRock, Inc. | History | Reduced | 385,474 | 431 | 0.0% | 0.0% | 7 | -645,050 | -62.59% | Q2 2025 | Aug 12, 2025 |
| MILLENNIUM MANAGEMENT LLC | History | New | 275,112 | 308 | 0.0% | — | 8 | +275,112 | New | Q2 2025 | Aug 14, 2025 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Reduced | 213,273 | 238 | 0.0% | 0.0% | 9 | -212,387 | -49.9% | Q2 2025 | Aug 08, 2025 |
| JANE STREET GROUP, LLC | History | New | 180,985 | 202 | 0.0% | — | 10 | +180,985 | New | Q2 2025 | Aug 14, 2025 |
| AQR CAPITAL MANAGEMENT LLC | History | Reduced | 164,209 | 183 | 0.0% | 0.0% | 11 | -74,662 | -31.26% | Q2 2025 | Aug 14, 2025 |
| RENAISSANCE TECHNOLOGIES LLC | History | Added to | 117,734 | 131 | 0.0% | 0.0% | 12 | +82,434 | 233.52% | Q2 2025 | Aug 13, 2025 |
| NORTHERN TRUST CORP | History | Reduced | 107,568 | 120 | 0.0% | 0.0% | 13 | -79,398 | -42.47% | Q2 2025 | Aug 13, 2025 |
| TWO SIGMA INVESTMENTS, LP | History | Reduced | 104,290 | 116 | 0.0% | 0.0% | 14 | -35,480 | -25.38% | Q2 2025 | Aug 14, 2025 |
| Eagle Bay Advisors LLC | History | New | 99,635 | 111 | 0.09% | — | 15 | +99,635 | New | Q2 2025 | Jul 11, 2025 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | Reduced | 89,705 | 100 | 0.0% | 0.0% | 16 | -35,909 | -28.59% | Q2 2025 | Aug 12, 2025 |
| TWO SIGMA ADVISERS, LP | History | Reduced | 82,700 | 92 | 0.0% | 0.0% | 17 | -7,800 | -8.62% | Q2 2025 | Aug 14, 2025 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Added to | 80,311 | 89 | 0.0% | 0.0% | 18 | +55,131 | 218.95% | Q2 2025 | Aug 14, 2025 |
| STATE STREET CORP | History | Reduced | 75,913 | 85 | 0.0% | 0.0% | 19 | -417,785 | -84.62% | Q2 2025 | Aug 14, 2025 |
| Woodline Partners LP | History | No change | 69,576 | 77 | 0.0% | 0.0% | 20 | 0 | 0.0% | Q2 2025 | Aug 14, 2025 |
| Verition Fund Management LLC | History | Reduced | 48,962 | 54 | 0.0% | 0.0% | 21 | -70,106 | -58.88% | Q2 2025 | Aug 14, 2025 |
| ACADIAN ASSET MANAGEMENT LLC | History | New | 45,253 | 50 | 0.0% | — | 22 | +45,253 | New | Q2 2025 | Aug 07, 2025 |
| MARSHALL WACE, LLP | History | New | 44,287 | 49 | 0.0% | — | 23 | +44,287 | New | Q2 2025 | Aug 13, 2025 |
| ROYAL BANK OF CANADA | History | Added to | 40,728 | 45 | 0.0% | 0.0% | 24 | +38,417 | 1662.35% | Q2 2025 | Nov 21, 2025 |
| Qube Research & Technologies Ltd | History | Added to | 39,340 | 44 | 0.0% | 0.0% | 25 | +6,519 | 19.86% | Q2 2025 | Aug 14, 2025 |
| PRICE T ROWE ASSOCIATES INC /MD/ | History | New | 35,210 | 40 | 0.0% | — | 26 | +35,210 | New | Q2 2025 | Aug 14, 2025 |
| IEQ CAPITAL, LLC | History | Reduced | 27,410 | 30 | 0.0% | 0.0% | 27 | -10,012 | -26.75% | Q2 2025 | Aug 14, 2025 |
| XTX Topco Ltd | History | New | 26,472 | 29 | 0.0% | — | 28 | +26,472 | New | Q2 2025 | Aug 12, 2025 |
| MORGAN STANLEY | History | Reduced | 20,100 | 22 | 0.0% | 0.0% | 29 | -14,404 | -41.75% | Q2 2025 | Aug 14, 2025 |
| SG Americas Securities, LLC | History | New | 15,304 | 17 | 0.0% | — | 30 | +15,304 | New | Q2 2025 | Aug 08, 2025 |
| Vanguard Personalized Indexing Management, LLC | History | Added to | 14,919 | 16 | 0.0% | 0.0% | 31 | +1,078 | 7.79% | Q2 2025 | Jul 25, 2025 |
| Tower Research Capital LLC (TRC) | History | Added to | 13,436 | 15 | 0.0% | 0.0% | 32 | +6,217 | 86.12% | Q2 2025 | Aug 15, 2025 |
| CAPTRUST FINANCIAL ADVISORS | History | Reduced | 12,575 | 14 | 0.0% | 0.0% | 33 | -733 | -5.51% | Q2 2025 | Aug 15, 2025 |
| TWO SIGMA SECURITIES, LLC | History | New | 11,950 | 13 | 0.0% | — | 34 | +11,950 | New | Q2 2025 | Aug 14, 2025 |
| Ground Swell Capital, LLC | History | New | 11,833 | 13 | 0.02% | — | 35 | +11,833 | New | Q2 2025 | Jul 31, 2025 |
| CWM, LLC | History | New | 11,268 | 13 | 0.0% | — | 36 | +11,268 | New | Q2 2025 | Jul 25, 2025 |
| Cerity Partners LLC | History | Reduced | 11,923 | 13 | 0.0% | 0.0% | 37 | -1,183 | -9.03% | Q2 2025 | Aug 13, 2025 |
| CITIGROUP INC | History | Reduced | 8,988 | 10 | 0.0% | 0.0% | 38 | -2,726 | -23.27% | Q2 2025 | Aug 11, 2025 |
| BANK OF AMERICA CORP /DE/ | History | Reduced | 8,910 | 9 | 0.0% | 0.0% | 39 | -2,383 | -21.1% | Q2 2025 | Aug 14, 2025 |
| DEUTSCHE BANK AG\ | History | Reduced | 7,520 | 8 | 0.0% | 0.0% | 41 | -39,253 | -83.92% | Q2 2025 | Aug 12, 2025 |
| FEDERATED HERMES, INC. | History | Added to | 7,981 | 8 | 0.0% | 0.0% | 42 | +1,959 | 32.53% | Q2 2025 | Aug 13, 2025 |
| FMR LLC | History | Added to | 7,333 | 8 | 0.0% | 0.0% | 40 | +1,772 | 31.86% | Q2 2025 | Aug 14, 2025 |
| AlphaQuest LLC | History | New | 7,031 | 7 | 0.0% | — | 43 | +7,031 | New | Q2 2025 | Jul 31, 2025 |
| China Universal Asset Management Co., Ltd. | History | New | 6,975 | 7 | 0.0% | — | 44 | +6,975 | New | Q2 2025 | Aug 28, 2025 |
| UBS Group AG | History | Reduced | 4,627 | 5 | 0.0% | 0.0% | 45 | -36,482 | -88.74% | Q2 2025 | Aug 14, 2025 |
| BARCLAYS PLC | History | Reduced | 2,800 | 3 | 0.0% | 0.0% | 46 | -16,378 | -85.4% | Q2 2025 | Feb 27, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Reduced | 3,133 | 3 | 0.0% | 0.0% | 47 | -9 | -0.29% | Q2 2025 | Aug 14, 2025 |
| RHUMBLINE ADVISERS | History | Reduced | 976 | 1 | 0.0% | 0.0% | 50 | -20,355 | -95.42% | Q2 2025 | Aug 12, 2025 |
| JPMORGAN CHASE & CO | History | Reduced | 1,732 | 1 | 0.0% | 0.0% | 48 | -8,206 | -82.57% | Q2 2025 | Aug 12, 2025 |
| RAYMOND JAMES FINANCIAL INC | History | New | 1,325 | 1 | 0.0% | — | 49 | +1,325 | New | Q2 2025 | Aug 14, 2025 |
| Capital Advisors, Ltd. LLC | History | New | 776 | 1 | 0.0% | — | 52 | +776 | New | Q2 2025 | Jul 24, 2025 |
| Mirae Asset Global Investments Co., Ltd. | History | Added to | 1,342 | 1 | 0.0% | 0.0% | 51 | +265 | 24.61% | Q2 2025 | Jul 21, 2025 |
| Nuveen, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -45,015 | -100.0% | Q1 2025 | May 12, 2025 |
| Bank of New York Mellon Corp | History | Closed out | 0 | 0 | — | 0.0% | — | -44,123 | -100.0% | Q1 2025 | Apr 29, 2025 |
| ALLIANCEBERNSTEIN L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -39,200 | -100.0% | Q1 2025 | May 15, 2025 |
| Invesco Ltd. | History | Closed out | 0 | 0 | — | 0.0% | — | -36,127 | -100.0% | Q1 2025 | May 12, 2025 |
| CITADEL ADVISORS LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -27,600 | -100.0% | Q1 2025 | May 15, 2025 |
| DIMENSIONAL FUND ADVISORS LP | History | Closed out | 0 | 0 | — | 0.0% | — | -18,376 | -100.0% | Q1 2025 | May 13, 2025 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -11,584 | -100.0% | Q1 2025 | Apr 16, 2025 |
| INTECH INVESTMENT MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -11,069 | -100.0% | Q1 2025 | May 20, 2025 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | History | Closed out | 0 | 0 | — | 0.0% | — | -9,096 | -100.0% | Q1 2025 | May 15, 2025 |
| WELLS FARGO & COMPANY/MN | History | Reduced | 524 | 0 | — | 0.0% | — | -7,084 | -93.11% | Q2 2025 | Aug 14, 2025 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | Closed out | 0 | 0 | — | 0.0% | — | -6,512 | -100.0% | Q1 2025 | Oct 08, 2025 |
| Police & Firemen's Retirement System of New Jersey | History | Closed out | 0 | 0 | — | 0.0% | — | -3,156 | -100.0% | Q1 2025 | May 09, 2025 |
| COLDSTREAM CAPITAL MANAGEMENT INC | History | Closed out | 0 | 0 | — | 0.0% | — | -2,626 | -100.0% | Q1 2025 | May 13, 2025 |
| Legal & General Group Plc | History | Closed out | 0 | 0 | — | 0.0% | — | -1,746 | -100.0% | Q1 2025 | May 15, 2025 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -1,164 | -100.0% | Q1 2025 | May 19, 2025 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | History | Closed out | 0 | 0 | — | 0.0% | — | -1,099 | -100.0% | Q1 2025 | May 15, 2025 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | Reduced | 5 | 0 | — | — | — | -849 | -99.41% | Q2 2025 | Aug 08, 2025 |
| EverSource Wealth Advisors, LLC | History | New | 317 | 0 | — | — | — | +317 | New | Q2 2025 | Aug 13, 2025 |
| NISA INVESTMENT ADVISORS, LLC | History | Reduced | 563 | 0 | — | — | — | -165 | -22.66% | Q2 2025 | Jul 31, 2025 |
| Clearstead Advisors, LLC | History | New | 61 | 0 | — | — | — | +61 | New | Q2 2025 | Aug 08, 2025 |
| Sterling Capital Management LLC | History | Closed out | 0 | 0 | — | — | — | -18 | -100.0% | Q1 2025 | May 13, 2025 |
| True Wealth Design, LLC | History | New | 14 | 0 | — | — | — | +14 | New | Q2 2025 | Aug 06, 2025 |
| US BANCORP \DE\ | History | No change | 17 | 0 | — | — | — | 0 | 0.0% | Q2 2025 | Jul 24, 2025 |
| OSAIC HOLDINGS, INC. | History | No change | 400 | 0 | — | — | — | 0 | 0.0% | Q2 2025 | Sep 04, 2025 |
| SBI Securities Co., Ltd. | History | No change | 22 | 0 | — | — | — | 0 | 0.0% | Q2 2025 | Aug 08, 2025 |
| GF FUND MANAGEMENT CO. LTD. | History | No change | 716 | 0 | — | — | — | 0 | 0.0% | Q2 2025 | Jul 22, 2025 |