IGM Biosciences Ownership | Who Owns IGM Biosciences?


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IGM Biosciences Ownership Summary


IGM Biosciences is owned by 29.13% institutional investors, 37.57% insiders, and 33.30% retail investors. Baker bros. advisors lp is the largest institutional shareholder, holding 6.75% of IGMS shares. T. Rowe Price New Horizons is the top mutual fund, with 2.99% of its assets in IGM Biosciences shares.

IGMS Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockIGM Biosciences29.13%37.57%33.30%
SectorHealthcare Stocks 279.18%10.62%-189.80%
IndustryBiotech Stocks 63.96%10.74%25.30%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Baker bros. advisors lp4.09M6.75%$25.02M
Price t rowe associates inc /md/3.57M5.88%$21.81M
Artal group3.33M5.54%$22.88M
Siren3.33M5.49%$20.35M
Redmile group2.95M4.87%$18.04M
Sanofi1.44M2.37%$8.79M
Blackrock funding, inc. /de1.05M1.74%$6.44M
Goldman sachs group978.49K1.61%$5.98M
Vanguard group896.35K1.48%$5.48M
Blackrock883.08K1.47%$6.07M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Sanofi1.44M5.04%$8.79M
Redmile group2.95M1.26%$18.04M
Siren3.33M0.90%$20.35M
Artal group3.33M0.58%$22.88M
Baker bros. advisors lp4.09M0.27%$25.02M
Bruce100.00K0.20%$611.00K
Eagle bay advisors44.63K0.17%$272.72K
Gsa capital partners llp93.48K0.04%$571.00K
China universal asset management7.23K0.00%$44.15K
Woodline partners lp67.26K0.00%$410.95K

Top Buyers

HolderShares% AssetsChange
Sanofi1.44M5.04%1.44M
Artal group3.33M0.58%250.00K
Blackrock funding, inc. /de1.05M0.00%154.11K
Blackrock883.08K0.00%125.12K
Two sigma investments, lp107.62K0.00%71.34K

Top Sellers

HolderShares% AssetsChange
Ra capital management---937.50K
Price t rowe associates inc /md/3.57M0.00%-445.26K
Fmr473.43K0.00%-346.10K
Goldman sachs group978.49K0.00%-280.75K
Invesco---222.93K

New Positions

HolderShares% AssetsChangeValue
Sanofi1.44M5.04%1.44M$8.79M
Aqr capital management12.23K0.00%12.23K$84.02K
China universal asset management7.23K0.00%7.23K$44.15K
Bnp paribas arbitrage, snc6.63K-6.63K$40.53K
Mirae asset global investments1.14K-1.14K$7.24K

Sold Out

HolderChange
Point72 asia (singapore) pte.-1.00
Nelson, van denburg & campbell wealth management group-3.00
Farther finance advisors-9.00
Russell investments group-131.00
Signaturefd-161.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 202580-8.05%17,818,944-17.81%292.28%42-4.55%2644.44%
Dec 31, 202449-37.18%4,921,951-77.16%80.64%25-26.47%8-68.00%
Sep 30, 202478-8.24%21,552,420-3.19%352.59%34-35.85%2566.67%
Jun 30, 202485-3.41%22,262,728-2.42%372.55%5310.42%15-28.57%
Mar 31, 20248818.92%22,815,5464.28%382.83%4829.73%21-

Top Mutual Funds Shareholders


HolderShares% HoldingChange
T. Rowe Price New Horizons1.78M2.99%-
US Small-Cap Growth II Equity Comp1.78M2.99%-189.87K
T. Rowe Price Health Sciences829.52K1.40%-27.74K
Vanguard US Total Market Shares ETF461.05K0.77%-
Fidelity Select Biotechnology455.82K0.77%-149.99K
Vanguard Total Stock Mkt Idx Inv448.61K0.75%-
T. Rowe Price New Horizons Tr-Z426.94K0.72%30.79K
T. Rowe Price New Horizons Tr-A426.94K0.71%30.79K
iShares Russell 2000 ETF394.70K0.66%192.00
Vanguard Institutional Extnd Mkt Idx Tr275.55K0.46%-

Recent Insider Transactions


DateNameRoleActivityValue
May 14, 2025Weber Steven PRINCIPAL ACCOUNTING OFFICERSell$2.09K
Mar 14, 2025Weber Steven PRINCIPAL ACCOUNTING OFFICERSell$2.09K
Mar 14, 2025Tahir Misbah CHIEF FINANCIAL OFFICERSell$9.01K
Mar 14, 2025Harler Mary Beth Chief Executive OfficerSell$9.01K
Mar 14, 2025Decker Lisa Lynn CHIEF BUSINESS OFFICERSell$5.55K

Insider Transactions Trends


DateBuySell
2025 Q2-1
2025 Q1-5
2024 Q4-4
2024 Q3-8
2024 Q2-7

IGMS Ownership FAQ


Who Owns IGM Biosciences?

IGM Biosciences shareholders are primarily institutional investors at 29.13%, followed by 37.57% insiders and 33.30% retail investors. The average institutional ownership in IGM Biosciences's industry, Biotech Stocks , is 63.96%, which IGM Biosciences falls below.

Who owns the most shares of IGM Biosciences?

IGM Biosciences’s largest shareholders are Baker bros. advisors lp (4.09M shares, 6.75%), Price t rowe associates inc /md/ (3.57M shares, 5.88%), and Artal group (3.33M shares, 5.54%). Together, they hold 18.17% of IGM Biosciences’s total shares outstanding.

Does Blackrock own IGM Biosciences?

Yes, BlackRock owns 1.47% of IGM Biosciences, totaling 883.08K shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 6.07M$. In the last quarter, BlackRock increased its holdings by 125.12K shares, a 16.51% change.

Who is IGM Biosciences’s biggest shareholder by percentage of total assets invested?

Sanofi is IGM Biosciences’s biggest shareholder by percentage of total assets invested, with 5.04% of its assets in 1.44M IGM Biosciences shares, valued at 8.79M$.

Who is the top mutual fund holder of IGM Biosciences shares?

T. Rowe Price New Horizons is the top mutual fund holder of IGM Biosciences shares, with 2.99% of its total shares outstanding invested in 1.78M IGM Biosciences shares.

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