Zymeworks Inc. ZYME
30.13 USD +1.14 (+3.93%)
At closeNov 3, 2026, 6:53 PM EST
30.30 +0.17 +0.56%
After hours · Nov 3, 6:53 PM ET
29.29 Day range 30.39
16.00 52-week range 31.34
- YTD
- +14.43%
- 1 year
- +59.50%
Held by funds
92 US ETFs and mutual funds hold ZYME · largest positions
Ownership
Held by insiders 1.34%
Held by institutions 99.89%
Float held by institutions 101.25%
Institutions 294
Top institutional holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| EcoR1 Capital, LLC | 36.46% | 22,970,388 | 692.10M | Jun 29, 2026 |
| Rubric Capital Management LP | 11.11% | 7,000,000 | 210.91M | Jun 29, 2026 |
| Blackrock Inc. | 6.75% | 4,251,030 | 128.08M | Jun 29, 2026 |
| Perceptive Advisors Llc | 6.64% | 4,182,953 | 126.03M | Jun 29, 2026 |
| BVF Inc. | 5.79% | 3,649,142 | 109.95M | Jun 29, 2026 |
| Morgan Stanley | 3.54% | 2,231,260 | 67.23M | Jun 29, 2026 |
Top mutual fund holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 2.39% | 1,508,613 | 45.45M | Jun 29, 2026 |
| iShares Trust-iShares Russell 2000 ETF | 1.88% | 1,185,928 | 35.73M | Sep 29, 2026 |
| IVY FUNDS-Nomura Small Cap Growth Fund | 0.95% | 600,846 | 18.10M | Jun 29, 2026 |
| iShares Trust-iShares Biotechnology ETF | 0.85% | 538,110 | 16.21M | Sep 29, 2026 |
| Fidelity Salem Street Trust-Fidelity Small Cap Index Fund | 0.82% | 514,484 | 15.50M | Aug 30, 2026 |
| iShares Trust-iShares Russell 2000 Growth ETF | 0.68% | 425,949 | 12.83M | Sep 29, 2026 |
Insiders
| Insider | Relation | Latest transaction | Date | Shares held |
|---|---|---|---|---|
| CIONGOLI GREGORY AUSTIN | Director | Stock Award(Grant) | Aug 11, 2025 | 493,500 |
| ECOR1 CAPITAL, L.L.C. | Beneficial Owner of more than 10% of a Class of Security | Conversion of Exercise of derivative security | Jun 25, 2025 | 0 |
| GALBRAITH KENNETH HARRY | Chief Executive Officer | Sale | Jan 11, 2026 | 226,842 |
| HOLLYWOOD MARK | Chief Operating Officer | Stock Award(Grant) | Jul 5, 2026 | 133,852 |
| MOORE PAUL ANDREW | Officer | Sale | Jan 11, 2026 | 48,497 |
| PATTERSON LEONE D. CPA | Chief Financial Officer | Stock Award(Grant) | Jan 5, 2026 | 459 |