Zymeworks Inc. (ZYME) Institutional Ownership & Insider Trading
203 institutions reported holding Zymeworks Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 11 insider trades on Form 4 since 2025-10-01.
Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason
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- Market cap
- 2.0B
- P/E TTM
- —
- Dividend yield
- —
- 52-week
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- Next earnings
- 9 Nov, in 16 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters203 institutions held 98.1% of the shares. Across filers that reported both quarters, shares held changed -0.9%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 203 | 70 | -0.9% | 54 | 21 | 66 | 24 |
| Mar 26 | 210 | 70 | -1.7% | 74 | 32 | 48 | 33 |
| Dec 25 | 204 | 71 | -1.6% | 68 | 37 | 58 | 19 |
| Sep 25 | 180 | 74 | -2.3% | 54 | 22 | 53 | 19 |
| Jun 25 | 180 | 76 | +7.6% | 56 | 26 | 50 | 26 |
| Mar 25 | 181 | 70 | +6.3% | 53 | 26 | 59 | 16 |
| Dec 24 | 171 | 66 | -0.3% | 45 | 21 | 58 | 16 |
| Sep 24 | 161 | 66 | -8.7% | 38 | 19 | 49 | 21 |
Zymeworks Inc. — questions
- Who owns Zymeworks Inc. stock?
- 203 institutions reported Zymeworks Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: EcoR1 Capital, LLC (32.4%), Rubric Capital Management LP (9.9%), BlackRock, Inc. (6.0%).
- Are Zymeworks Inc. insiders buying or selling?
- 11 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.
Every figure on this page comes from Zymeworks Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.