Equillium Ownership | Who Owns Equillium?
Equillium Ownership Summary
Equillium is owned by 30.03% institutional investors, 20.93% insiders, and 49.04% retail investors. Adar1 capital management is the largest institutional shareholder, holding 15.57% of EQ shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 1.60% of its assets in Equillium shares.
EQ Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Equillium | 30.03% | 20.93% | 49.04% |
| Sector | Healthcare Stocks | 232.51% | 10.72% | -143.22% |
| Industry | Biotech Stocks | 384.55% | 10.58% | -295.13% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Adar1 capital management | 5.56M | 15.57% | $7.95M |
| Adage capital partners gp | 5.33M | 14.92% | $7.62M |
| Decheng capital | 4.45M | 12.45% | $6.89M |
| Woodline partners lp | 3.51M | 9.82% | $5.02M |
| Abrdn | 2.37M | 6.63% | $3.67M |
| Vanguard group | 1.92M | 5.38% | $2.98M |
| Stempoint capital lp | 1.91M | 5.34% | $2.73M |
| Takeda pharmaceutical | 1.82M | 5.11% | $2.61M |
| Renaissance | 733.23K | 2.05% | $1.14M |
| Cota capital management | 562.28K | 1.58% | $177.23K |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Cota capital management | 562.28K | 100.00% | $177.23K |
| Takeda pharmaceutical | 1.82M | 15.94% | $2.61M |
| Decheng capital | 4.45M | 0.93% | $6.89M |
| Adar1 capital management | 5.56M | 0.75% | $7.95M |
| Stempoint capital lp | 1.91M | 0.55% | $2.73M |
| Diadema partners lp | 300.00K | 0.11% | $429.00K |
| Persistent asset partners | 68.99K | 0.07% | $98.66K |
| Ikarian capital | 332.30K | 0.05% | $475.19K |
| Woodline partners lp | 3.51M | 0.02% | $5.02M |
| Adage capital partners gp | 5.33M | 0.01% | $7.62M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Adar1 capital management | 5.56M | 0.75% | 5.56M |
| Adage capital partners gp | 5.33M | 0.01% | 5.33M |
| Woodline partners lp | 3.51M | 0.02% | 3.51M |
| Abrdn | 2.37M | 0.01% | 1.99M |
| Stempoint capital lp | 1.91M | 0.55% | 1.91M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Marshall wace, llp | - | - | -41.22K |
| American century companies | - | - | -40.33K |
| Integrated wealth concepts | - | - | -40.00K |
| Dcf advisers | - | - | -39.49K |
| Acadian asset management | - | - | -39.48K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Adar1 capital management | 5.56M | 0.75% | 5.56M | $7.95M |
| Adage capital partners gp | 5.33M | 0.01% | 5.33M | $7.62M |
| Woodline partners lp | 3.51M | 0.02% | 3.51M | $5.02M |
| Stempoint capital lp | 1.91M | 0.55% | 1.91M | $2.73M |
| Cantor fitzgerald, l. p. | 425.00K | 0.01% | 425.00K | $607.75K |
Sold Out
| Holder | Change |
|---|---|
| Rise advisors | -263.00 |
| Jpmorgan chase | -1.11K |
| Lazard asset management | -1.59K |
| Simplex trading | -1.92K |
| Citadel advisors | -10.00K |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 16 | -62.79% | 10,727,973 | -63.82% | 30 | 0.44% | 8 | -73.33% | 2 | -66.67% |
| Sep 30, 2025 | 43 | 59.26% | 29,653,795 | 240.49% | 83 | 13.86% | 30 | 114.29% | 6 | - |
| Jun 30, 2025 | 27 | 17.39% | 8,709,052 | 38.84% | 24 | 7.88% | 14 | 75.00% | 6 | 20.00% |
| Mar 31, 2025 | 25 | -3.85% | 8,659,891 | -0.54% | 24 | 4.03% | 8 | -11.11% | 5 | -16.67% |
| Dec 31, 2024 | 12 | -47.83% | 3,030,505 | -56.03% | 8 | 2.26% | 6 | -33.33% | 2 | -33.33% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 570.84K | 1.60% | - |
| Vanguard Total Stock Mkt Idx Inv | 558.63K | 1.56% | -12.21K |
| Vanguard Institutional Extnd Mkt Idx Tr | 169.98K | 0.48% | -77.45K |
| abrdn Life Sciences Investors | 226.20K | 0.38% | 226.20K |
| Mandarine Global Microcap G EUR | 67.50K | 0.19% | 7.50K |
| Fidelity Extended Market Index | 99.14K | 0.17% | -698.00 |
| PGIM Quantitative Solutions US Micro Cap | 39.20K | 0.11% | 39.20K |
| iShares Micro-Cap ETF | 30.43K | 0.09% | - |
| Fidelity Total Market Index | 35.24K | 0.06% | - |
| Vanguard Instl Ttl Stck Mkt Idx Tr | 17.86K | 0.05% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jan 08, 2026 | Tom Penny | Principal Accounting Officer | Sell | $8.43K |
| Dec 23, 2025 | Zedelmayer Christine | Sr. Vice President and COO | Sell | $150.00K |
| Dec 12, 2025 | Zedelmayer Christine | Sr. Vice President and COO | Sell | $31.90K |
| Dec 15, 2025 | Zedelmayer Christine | Sr. Vice President and COO | Sell | $15.59K |
| Nov 25, 2025 | Zedelmayer Christine | Sr. Vice President and COO | Sell | $98.00 |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 1 |
| 2025 Q4 | - | 5 |
| 2025 Q3 | - | - |
| 2025 Q2 | - | - |
| 2025 Q1 | - | 1 |
EQ Ownership FAQ
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