IGM Biosciences Ownership | Who Owns IGM Biosciences?
IGM Biosciences Ownership Summary
IGM Biosciences is owned by 25.96% institutional investors, 35.39% insiders, and 38.65% retail investors. Baker bros. advisors lp is the largest institutional shareholder, holding 6.66% of IGMS shares. US Small-Cap Growth II Equity Comp is the top mutual fund, with 2.99% of its assets in IGM Biosciences shares.
IGMS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | IGM Biosciences | 25.96% | 35.39% | 38.65% |
| Sector | Healthcare Stocks | 488.17% | 11.08% | -399.26% |
| Industry | Biotech Stocks | 306.59% | 11.10% | -217.69% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Baker bros. advisors lp | 4.10M | 6.66% | $4.59M |
| Price t rowe associates inc /md/ | 3.57M | 5.88% | $21.81M |
| Artal group | 3.33M | 5.54% | $22.88M |
| Siren | 3.26M | 5.30% | $3.65M |
| Redmile group | 2.95M | 4.80% | $3.31M |
| Sanofi | 1.44M | 2.34% | $1.61M |
| Goldman sachs group | 978.49K | 1.61% | $5.98M |
| Vanguard group | 896.35K | 1.48% | $5.48M |
| Blackrock | 883.08K | 1.47% | $6.07M |
| Fmr | 473.43K | 0.78% | $2.89M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Sanofi | 1.44M | 0.92% | $1.61M |
| Artal group | 3.33M | 0.58% | $22.88M |
| Redmile group | 2.95M | 0.35% | $3.31M |
| Siren | 3.26M | 0.19% | $3.65M |
| Eagle bay advisors | 99.64K | 0.09% | $111.59K |
| Baker bros. advisors lp | 4.10M | 0.04% | $4.59M |
| China universal asset management | 7.23K | 0.00% | $44.15K |
| Woodline partners lp | 67.26K | 0.00% | $410.95K |
| Quest partners | 3.35K | 0.00% | $20.45K |
| Price t rowe associates inc /md/ | 3.57M | 0.00% | $21.81M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Artal group | 3.33M | 0.58% | 250.00K |
| Blackrock | 883.08K | 0.00% | 125.12K |
| Two sigma investments, lp | 107.62K | 0.00% | 71.34K |
| Marshall wace, llp | 44.29K | 0.00% | 44.29K |
| Cubist systematic strategies | 30.15K | 0.00% | 30.15K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ra capital management | - | - | -937.50K |
| Blackrock funding, inc. /de | 385.47K | - | -645.05K |
| Price t rowe associates inc /md/ | 3.57M | 0.00% | -445.26K |
| Gsa capital partners llp | - | - | -425.30K |
| Fmr | 473.43K | 0.00% | -346.10K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Marshall wace, llp | 44.29K | 0.00% | 44.29K | $49.60K |
| Xtx topco | 26.47K | 0.00% | 26.47K | $29.65K |
| Aqr capital management | 12.23K | 0.00% | 12.23K | $84.02K |
| China universal asset management | 7.23K | 0.00% | 7.23K | $44.15K |
| Bnp paribas arbitrage, snc | 6.63K | - | 6.63K | $40.53K |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -3.00 |
| Farther finance advisors | -9.00 |
| Sterling capital management | -18.00 |
| Smartleaf asset management | -41.00 |
| Russell investments group | -131.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2025 | 65 | -18.75% | 15,953,573 | -10.47% | 25 | 3.06% | 23 | -45.24% | 33 | 26.92% |
| Mar 31, 2025 | 80 | -8.05% | 17,818,944 | -17.81% | 29 | 2.28% | 42 | -4.55% | 26 | 44.44% |
| Dec 31, 2024 | 49 | -37.18% | 4,921,951 | -77.16% | 8 | 0.64% | 25 | -26.47% | 8 | -68.00% |
| Sep 30, 2024 | 78 | -8.24% | 21,552,420 | -3.19% | 35 | 2.59% | 34 | -35.85% | 25 | 66.67% |
| Jun 30, 2024 | 85 | -3.41% | 22,262,728 | -2.42% | 37 | 2.55% | 53 | 10.42% | 15 | -28.57% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| US Small-Cap Growth II Equity Comp | 1.78M | 2.99% | -189.87K |
| T. Rowe Price New Horizons | 1.78M | 2.99% | - |
| T. Rowe Price Health Sciences | 829.52K | 1.40% | -27.74K |
| Vanguard US Total Market Shares ETF | 461.05K | 0.77% | - |
| Fidelity Select Biotechnology | 455.82K | 0.77% | -149.99K |
| Vanguard Total Stock Mkt Idx Inv | 439.01K | 0.73% | -9.60K |
| T. Rowe Price New Horizons Tr-Z | 426.94K | 0.72% | 30.79K |
| T. Rowe Price New Horizons Tr-A | 426.94K | 0.71% | 30.79K |
| Invesco Dorsey Wright SmallCap Momt ETF | 224.31K | 0.38% | 406.00 |
| State St Russell Sm/Mid Cp® Indx NL Cl C | 194.39K | 0.32% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jul 23, 2025 | Tahir Misbah | CHIEF FINANCIAL OFFICER | Sell | $11.13K |
| Jul 23, 2025 | Harler Mary Beth | Chief Executive Officer | Sell | $18.46K |
| Jul 23, 2025 | Decker Lisa Lynn | CHIEF BUSINESS OFFICER | Sell | $5.61K |
| Jun 16, 2025 | Weber Steven | PRINCIPAL ACCOUNTING OFFICER | Sell | $582.81 |
| Jun 16, 2025 | Tahir Misbah | CHIEF FINANCIAL OFFICER | Sell | $1.83K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | 3 |
| 2025 Q2 | - | 5 |
| 2025 Q1 | - | 5 |
| 2024 Q4 | - | 4 |
| 2024 Q3 | - | 8 |
IGMS Ownership FAQ
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