Zymeworks Ownership | Who Owns Zymeworks?
Zymeworks Ownership Summary
Zymeworks is owned by 16.86% institutional investors, 0.80% insiders, and 82.34% retail investors. Ecor1 capital is the largest institutional shareholder, holding 30.49% of ZYME shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.21% of its assets in Zymeworks shares.
ZYME Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Zymeworks | 16.86% | 0.80% | 82.34% |
| Sector | Healthcare Stocks | 42.51% | 10.81% | 46.68% |
| Industry | Biotech Stocks | 45.22% | 10.75% | 44.04% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Ecor1 capital | 22.97M | 30.49% | $392.33M |
| Rubric capital management lp | 4.71M | 6.25% | $80.46M |
| Blackrock funding, inc. /de | 3.99M | 5.30% | $68.14M |
| Morgan stanley | 3.98M | 5.29% | $68.06M |
| Bvf inc/il | 3.94M | 5.23% | $67.27M |
| Redmile group | 3.71M | 4.92% | $63.29M |
| Vanguard group | 2.15M | 2.86% | $36.80M |
| Perceptive advisors | 2.09M | 2.78% | $35.71M |
| Vestal point capital, lp | 1.76M | 2.34% | $30.15M |
| Ubs asset management americas | 1.71M | 2.27% | $29.21M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Ecor1 capital | 22.97M | 18.83% | $392.33M |
| Redmile group | 3.71M | 6.16% | $63.29M |
| Prosight management, lp | 749.61K | 2.99% | $12.80M |
| Nextech invest | 1.11M | 2.90% | $19.03M |
| Bvf inc/il | 3.94M | 2.73% | $67.27M |
| Aquilo capital management | 84.48K | 1.80% | $1.01M |
| Acuta capital partners | 80.14K | 1.41% | $1.37M |
| Vestal point capital, lp | 1.76M | 1.36% | $30.15M |
| Perceptive advisors | 2.09M | 1.03% | $35.71M |
| Rubric capital management lp | 4.71M | 0.91% | $80.46M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Assenagon asset management | 1.33M | 0.03% | 833.99K |
| Perceptive advisors | 2.09M | 1.03% | 815.39K |
| Vestal point capital, lp | 1.76M | 1.36% | 615.00K |
| Arrowstreet capital, limited partnership | 313.75K | 0.00% | 313.75K |
| Millennium management | 295.61K | 0.00% | 295.61K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Bnp paribas asset management | - | - | -2.04M |
| Bridgeway capital management | - | - | -766.94K |
| Ubs asset management americas | 1.71M | 0.01% | -749.05K |
| Prosight management, lp | 749.61K | 2.99% | -560.29K |
| Redmile group | 3.71M | 6.16% | -444.88K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Arrowstreet capital, limited partnership | 313.75K | 0.00% | 313.75K | $5.36M |
| Millennium management | 295.61K | 0.00% | 295.61K | $3.52M |
| Axa investment managers | 158.42K | 0.01% | 158.42K | $2.71M |
| Marshall wace, llp | 154.86K | 0.00% | 154.86K | $2.64M |
| Connor, clark & lunn investment management | 96.80K | 0.01% | 96.80K | $1.65B |
Sold Out
| Holder | Change |
|---|---|
| Versant capital management | -12.00 |
| Northwestern mutual wealth management | -14.00 |
| Signaturefd | -19.00 |
| Richards, merrill & peterson | -20.00 |
| Ameriflex group | -20.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 78 | -55.43% | 12,703,200 | -81.92% | 16 | 0.19% | 33 | -62.07% | 30 | -42.31% |
| Jun 30, 2025 | 183 | -2.14% | 75,607,117 | 7.41% | 100 | 1.15% | 90 | -3.23% | 54 | -15.63% |
| Mar 31, 2025 | 14 | -91.95% | 14,123,395 | -78.74% | 18 | 0.24% | 9 | -88.16% | 4 | -93.55% |
| Dec 31, 2024 | 174 | 4.82% | 66,432,090 | 0.06% | 87 | 1.15% | 76 | 8.57% | 62 | 24.00% |
| Sep 30, 2024 | 166 | 1.22% | 66,390,794 | -2.64% | 87 | 1.09% | 70 | -18.60% | 50 | - |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 2.24M | 3.21% | - |
| HBM Healthcare Investments AG Ord | 2.00M | 2.67% | - |
| Vanguard Total Stock Mkt Idx Inv | 1.85M | 2.45% | -40.86K |
| iShares Russell 2000 ETF | 1.22M | 1.61% | - |
| UBS (Lux) Digital Health Equity SB USD | 1.08M | 1.55% | - |
| BNP Paribas US Small Cap ClassicC | 1.09M | 1.44% | 2.82K |
| BNP Paribas US Small Cap Classic R | 1.07M | 1.43% | -21.54K |
| UBS Lux Dgtl Hlth Eq Fd seeding P acc | 844.70K | 1.12% | - |
| BNP Paribas Health Cr Innovtr Cl Cap | 795.67K | 1.05% | -789.00 |
| Xtrackers S&P 500 Swap ETF 1C | 774.42K | 1.03% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 19, 2025 | EcoR1 Capital, LLC | Buy | $69.74K | |
| May 15, 2025 | EcoR1 Capital, LLC | Buy | $565.85K | |
| Apr 16, 2025 | EcoR1 Capital, LLC | Buy | $825.59K | |
| Apr 17, 2025 | EcoR1 Capital, LLC | Buy | $630.82K | |
| Apr 03, 2025 | EcoR1 Capital, LLC | Buy | $1.43M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | - |
| 2025 Q2 | 8 | - |
| 2025 Q1 | 20 | 5 |
| 2024 Q4 | 8 | - |
| 2024 Q3 | - | - |
ZYME Ownership FAQ
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