Igm BiosciencesIGMS
13F holders, Q1 2025 (March 31)79holders −6
19new positions
25sold out
2famous investors
$1.15avg. 13F price*
At the end of Q1 2025, 79 institutions reported holding Igm Biosciences Inc. (IGMS) in their 13F filings, down 6 from Q4 2024. 19 opened new positions and 25 sold out. The largest holders were Baker Bros. Advisors LP ($4.7M), Siren, L.L.C. ($3.7M) and Redmile Group, LLC ($3.4M). 2 famous investors held it, including Cliff Asness (0.0% of AQR Capital Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Igm Biosciences Inc.
- CUSIP
- 449585108
- Latest filing quarter
- Q3 2025
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 19 | $830K |
| Exits | 25 | $4.3M |
All 13F filers, Q4 2024 → Q1 2025: 1,293,257 shares bought and 5,212,771 shares sold, net −3,919,514 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 79 holders
| Baker Bros. Advisors LP | 0.05% | Add +0.0% | 4,095,257 | $4.7M |
| Siren, L.L.C. | 0.21% | Reduce -2.2% | 3,255,826 | $3.7M |
| Redmile Group, LLC | 0.32% | No change | 2,952,131 | $3.4M |
| Sanofi | 1.00% | No change | 1,438,975 | $1.7M |
| BlackRock, Inc. | 0.00% | Reduce -2.2% | 1,030,524 | $1.2M |
| Vanguard Group Inc. | 0.00% | Reduce -2.3% | 875,569 | $1.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -18.9% | 793,386 | $912K |
| State Street Corp. | 0.00% | Add +7.5% | 493,698 | $568K |
| Geode Capital Management, LLC | 0.00% | Add +4.0% | 425,660 | $490K |
| Gsa Capital Partners LLP | 0.04% | Add +355.0% | 425,303 | $489K |
| AQR Capital Management | 0.00% | New | 238,871 | $275K |
| Northern Trust Corp. | 0.00% | Reduce -3.1% | 186,966 | $215K |
| Two Sigma Investments, LP | 0.00% | Add +29.9% | 139,770 | $161K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -20.4% | 125,614 | $144K |
| Verition Fund Management LLC | 0.00% | New | 119,068 | $137K |
| Bruce & Co., Inc. | 0.04% | No change | 100,000 | $115K |
| Eagle Bay Advisors LLC | 0.10% | Add +123.2% | 99,635 | $115K |
| Two Sigma Advisers, LP | 0.00% | New | 90,500 | $104K |
| Acadian Asset Management LLC | 0.00% | New | 85,807 | $97K |
| Woodline Partners LP | 0.00% | Add +3.4% | 69,576 | $80K |
| Deutsche Bank AG | 0.00% | Add +316.6% | 46,773 | $54K |
| Nuveen, LLC | 0.00% | — | 45,015 | $52K |
| Bank of New York Mellon Corp | 0.00% | Reduce -7.1% | 44,123 | $51K |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -98.8% | 42,864 | $50K |
| UBS Group AG | 0.00% | Add +291.6% | 41,109 | $47K |
| Alliancebernstein L.P. | 0.00% | No change | 39,200 | $45K |
| Ieq Capital, LLC | 0.00% | New | 37,422 | $43K |
| Invesco Ltd. | 0.00% | New | 36,127 | $42K |
| Renaissance Technologies | 0.00% | Reduce -53.4% | 35,300 | $41K |
| Morgan Stanley | 0.00% | Reduce -64.4% | 34,504 | $40K |
| Qube Research & Technologies Ltd | 0.00% | New | 32,821 | $38K |
| Susquehanna International Group, LLP | 0.00% | Reduce -22.2% | 25,180 | $29K |
| Rhumbline Advisers | 0.00% | Reduce -5.7% | 21,331 | $25K |
| Virtus Investment Advisers, LLC | 0.01% | New | 19,974 | $23K |
| Barclays PLC | 0.00% | Reduce -27.1% | 19,178 | $22K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -1.2% | 18,376 | $21K |
| Cwm, LLC | 0.00% | Add +11453.3% | 15,597 | $18K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | New | 13,841 | $16K |
| Two Sigma Securities, LLC | 0.00% | New | 13,486 | $16K |
| Captrust Financial Advisors | 0.00% | Add +30.5% | 13,308 | $15K |
| Cerity Partners LLC | 0.00% | Add +24.8% | 13,106 | $15K |
| Citigroup Inc. | 0.00% | Reduce -4.4% | 11,714 | $13K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | New | 11,584 | $13K |
| Bank of America Corp. | 0.00% | Reduce -43.5% | 11,293 | $13K |
| Intech Investment Management LLC | 0.00% | New | 11,069 | $13K |
| JPMorgan Chase & Co. | 0.00% | Add +1.3% | 9,938 | $11K |
| Cubist Systematic Strategies, LLC | 0.00% | Reduce -67.1% | 9,908 | $11K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.5% | 9,096 | $10K |
| Wells Fargo & Company | 0.00% | Add +2.2% | 7,608 | $9K |
| Corebridge Financial, Inc. | 0.00% | Reduce -1.5% | 7,514 | $9K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +109.9% | 7,219 | $8K |
| AlphaQuest LLC | 0.00% | Add +110.1% | 7,031 | $8K |
| China Universal Asset Management Co., Ltd. | 0.00% | Reduce -5.4% | 6,835 | $8K |
| New York State Common Retirement Fund | 0.00% | No change | 6,512 | $7K |
| Federated Hermes, Inc. | 0.00% | New | 6,022 | $7K |
| FMR LLC | 0.00% | Reduce -98.8% | 5,561 | $6K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 3,156 | $4K |
| BNP Paribas Financial Markets | 0.00% | Reduce -52.6% | 3,142 | $4K |
| Coldstream Capital Management Inc. | 0.00% | New | 2,626 | $3K |
| CoreCap Advisors, LLC | 0.00% | New | 2,234 | $3K |
| Legal & General Group Plc | 0.00% | No change | 1,746 | $2K |
| Royal Bank of Canada | 0.00% | Reduce -88.5% | 2,311 | $2K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 1,327 | $2K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | New | 1,164 | $1K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Reduce -5.2% | 1,077 | $1K |
| California State Teachers Retirement System | 0.00% | No change | 1,099 | $1K |
| PNC Financial Services Group, Inc. | 0.00% | Add +3613.0% | 854 | $982 |
| Point72 (DIFC) Ltd | 0.00% | Add +21.1% | 844 | $971 |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -81.6% | 728 | $837 |
| GF Fund Management Co. LTD. | 0.00% | No change | 716 | $823 |
| Osaic Holdings, Inc. | 0.00% | Add +316.7% | 400 | $460 |
| EverSource Wealth Advisors, LLC | 0.00% | New | 337 | $387 |
| True Wealth Design, LLC | 0.00% | New | 271 | $312 |
| Smartleaf Asset Management LLC | 0.00% | Reduce -90.5% | 41 | $50 |
| SBI Securities Co., Ltd. | 0.00% | Add +4.8% | 22 | $25 |
| Sterling Capital Management LLC | 0.00% | No change | 18 | $21 |
| US Bancorp \de | 0.00% | Reduce -34.6% | 17 | $20 |
| Amalgamated Bank | 0.00% | No change | 351 | $0 |
| Capital Advisors, Ltd. LLC | 0.00% | New | 258 | $0 |
"% of holder's portfolio" is IGMS's weight in each manager's 13F, not the share of Igm Biosciences Inc. the manager owns.