Institutional shares held 15.1 Million
0 calls
0 puts
Total value of holdings $19.1M
$0 calls
$0 puts
Market Cap $36.8M
28,969,000 Shares Out.
Institutional ownership 52.0%
# of Institutions 68


Latest Institutional Activity in IGMS

Top Purchases

Q2 2025
Millennium Management LLC Shares Held: 275K ($349K)
Q2 2025
Jane Street Group, LLC Shares Held: 181K ($230K)
Q2 2025
Renaissance Technologies LLC Shares Held: 118K ($150K)
Q2 2025
Goldman Sachs Group Inc Shares Held: 855K ($1.09M)
Q2 2025
Susquehanna International Group, LLP Shares Held: 80.3K ($102K)

Top Sells

Q2 2025
State Street Corp Shares Held: 75.9K ($96.4K)
Q2 2025
Geode Capital Management, LLC Shares Held: 213K ($271K)
Q2 2025
Vanguard Group Inc Shares Held: 767K ($974K)
Q2 2025
Northern Trust Corp Shares Held: 108K ($137K)
Q2 2025
Aqr Capital Management LLC Shares Held: 164K ($209K)

About IGMS

IGM Biosciences, Inc., a biotechnology company, develops Immunoglobulin M (IgM) antibodies for the treatment of cancer, infectious diseases, and autoimmune and inflammatory diseases. The company's lead product candidate is IGM-2323, a bispecific IgM antibody that is in Phase 2 clinical trials to treat patients with relapsed/refractory B cell Non-Hodgkin's lymphoma (NHL). It is also developing IGM-8444, an IgM antibody, which is in Phase 1 clinical trials for the treatment of patients with solid cancers; and IGM-7354, an anti-PD-L1 IgM antibody for the treatment of patients with solid and hematologic malignancies; IGM-2644, a bispecific T cell engaging IgM antibody targeting CD38 and CD3 proteins for the treatment of patients with multiple myeloma; and IGM-2537, a bispecific T cell engaging IgM antibody targeting CD123 and CD3 proteins for the treatment of patients with acute myeloid leukemia, myelodysplastic syndromes, and acute lymphoblastic leukemia. It has a collaboration and license agreement with Genzyme Corporation to generate, develop, manufacture, and commercialize IgM antibodies. The company was formerly known as Palingen, Inc. and changed its name to IGM Biosciences, Inc. in 2010. IGM Biosciences, Inc. was incorporated in 1993 and is headquartered in Mountain View, California.


Insider Transactions at IGMS

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
307K Shares
From 10 Insiders
Grant, award, or other acquisition 307K shares
Sell / Disposition
39.4M Shares
From 18 Insiders
Sale (or disposition) back to the issuer 35.2M shares
Disposition due to a tender of shares in a change of control transaction 4.12M shares
Open market or private sale 72.3K shares

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