Igm BiosciencesIGMS
13F holders, Q2 2025 (June 30)66holders −13
9new positions
23sold out
3famous investors
$1.12avg. 13F price*
At the end of Q2 2025, 66 institutions reported holding Igm Biosciences Inc. (IGMS) in their 13F filings, down 13 from Q1 2025. 9 opened new positions and 23 sold out. The largest holders were Baker Bros. Advisors LP ($4.6M), Siren, L.L.C. ($3.6M) and Redmile Group, LLC ($3.3M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), 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 Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 9 | $634K |
| Exits | 23 | $905K |
All 13F filers, Q1 2025 → Q2 2025: 826,223 shares bought and 2,689,675 shares sold, net −1,863,452 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 66 holders
| Baker Bros. Advisors LP | 0.04% | Add +0.0% | 4,096,210 | $4.6M |
| Siren, L.L.C. | 0.19% | No change | 3,255,826 | $3.6M |
| Redmile Group, LLC | 0.35% | No change | 2,952,131 | $3.3M |
| Sanofi | 0.92% | No change | 1,438,975 | $1.6M |
| Goldman Sachs Group Inc. | 0.00% | Add +7.8% | 855,286 | $958K |
| Vanguard Group Inc. | 0.00% | Reduce -12.4% | 767,154 | $859K |
| BlackRock, Inc. | 0.00% | Reduce -62.6% | 385,474 | $432K |
| Millennium Management | 0.00% | New | 275,112 | $308K |
| Geode Capital Management, LLC | 0.00% | Reduce -49.9% | 213,273 | $239K |
| Jane Street Group, LLC | 0.00% | New | 180,985 | $203K |
| AQR Capital Management | 0.00% | Reduce -31.3% | 164,209 | $184K |
| Renaissance Technologies | 0.00% | Add +233.5% | 117,734 | $132K |
| Northern Trust Corp. | 0.00% | Reduce -42.5% | 107,568 | $120K |
| Two Sigma Investments, LP | 0.00% | Reduce -25.4% | 104,290 | $117K |
| Eagle Bay Advisors LLC | 0.09% | No change | 99,635 | $112K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -28.6% | 89,705 | $100K |
| Two Sigma Advisers, LP | 0.00% | Reduce -8.6% | 82,700 | $93K |
| Susquehanna International Group, LLP | 0.00% | Add +218.9% | 80,311 | $90K |
| State Street Corp. | 0.00% | Reduce -84.6% | 75,913 | $85K |
| Woodline Partners LP | 0.00% | No change | 69,576 | $78K |
| Verition Fund Management LLC | 0.00% | Reduce -58.9% | 48,962 | $55K |
| Acadian Asset Management LLC | 0.00% | Reduce -47.3% | 45,253 | $50K |
| Marshall Wace, LLP | 0.00% | New | 44,287 | $50K |
| Royal Bank of Canada | 0.00% | Add +1662.3% | 40,728 | $45K |
| Qube Research & Technologies Ltd | 0.00% | Add +19.9% | 39,340 | $44K |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -17.9% | 35,210 | $40K |
| Ieq Capital, LLC | 0.00% | Reduce -26.8% | 27,410 | $31K |
| XTX Topco Ltd | 0.00% | New | 26,472 | $30K |
| Morgan Stanley | 0.00% | Reduce -41.8% | 20,100 | $23K |
| SG Americas Securities, LLC | 0.00% | New | 15,304 | $17K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Add +7.8% | 14,919 | $17K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +86.1% | 13,436 | $15K |
| Captrust Financial Advisors | 0.00% | Reduce -5.5% | 12,575 | $14K |
| Cubist Systematic Strategies, LLC | 0.00% | Add +24.3% | 12,316 | $14K |
| Two Sigma Securities, LLC | 0.00% | Reduce -11.4% | 11,950 | $13K |
| Cerity Partners LLC | 0.00% | Reduce -9.0% | 11,923 | $13K |
| Ground Swell Capital, LLC | 0.02% | New | 11,833 | $13K |
| Cwm, LLC | 0.00% | Reduce -27.8% | 11,268 | $13K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.00% | New | 11,133 | $12K |
| Citigroup Inc. | 0.00% | Reduce -23.3% | 8,988 | $10K |
| Bank of America Corp. | 0.00% | Reduce -21.1% | 8,910 | $10K |
| Federated Hermes, Inc. | 0.00% | Add +32.5% | 7,981 | $9K |
| Deutsche Bank AG | 0.00% | Reduce -83.9% | 7,520 | $8K |
| FMR LLC | 0.00% | Add +31.9% | 7,333 | $8K |
| AlphaQuest LLC | 0.00% | No change | 7,031 | $8K |
| China Universal Asset Management Co., Ltd. | 0.00% | Add +2.0% | 6,975 | $8K |
| UBS Group AG | 0.00% | Reduce -88.7% | 4,627 | $5K |
| BNP Paribas Financial Markets | 0.00% | Reduce -0.3% | 3,133 | $4K |
| Barclays PLC | 0.00% | Reduce -85.4% | 2,800 | $3K |
| JPMorgan Chase & Co. | 0.00% | Reduce -82.6% | 1,732 | $2K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +24.6% | 1,342 | $2K |
| Raymond James Financial Inc. | 0.00% | New | 1,325 | $1K |
| Rhumbline Advisers | 0.00% | Reduce -95.4% | 976 | $1K |
| Capital Advisors, Ltd. LLC | 0.00% | Add +200.8% | 776 | $1K |
| GF Fund Management Co. LTD. | 0.00% | No change | 716 | $802 |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -22.7% | 563 | $631 |
| Wells Fargo & Company | 0.00% | Reduce -93.1% | 524 | $587 |
| Osaic Holdings, Inc. | 0.00% | No change | 400 | $448 |
| Point72 (DIFC) Ltd | 0.00% | Reduce -54.0% | 388 | $435 |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -5.9% | 317 | $355 |
| Clearstead Advisors, LLC | 0.00% | New | 61 | $69 |
| SBI Securities Co., Ltd. | 0.00% | No change | 22 | $25 |
| US Bancorp \de | 0.00% | No change | 17 | $19 |
| Essential Partners LLC | 0.00% | — | 16 | $18 |
| True Wealth Design, LLC | 0.00% | Reduce -94.8% | 14 | $16 |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -99.4% | 5 | $6 |
"% of holder's portfolio" is IGMS's weight in each manager's 13F, not the share of Igm Biosciences Inc. the manager owns.