ZYME Institutional Ownership
Who owns Zymeworks Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 204 funds reported holding ZYME at Jun 30, 2026, together owning 98.1% of the company.
- ▼85 buying vs 102 selling
- ▼Held by funds -1.0 pts
- ▼Funds holding -9
- ▼Superinvestors: 0 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 204 | 213 | −4.2% |
| In funds' top 10 | 3 | 5 | −40.0% |
| 13F shares | 69.6M | 70.3M | −1.0% |
| Held by funds | 98.1% | 99.1% | −1.0 pts |
| New positions | 23 | 34 | −32.4% |
| Increased | 62 | 77 | −19.5% |
| Reduced | 73 | 59 | +23.7% |
| Sold out | 29 | 36 | −19.4% |
| Calls (shares) | 0 | 141K | −100.0% |
| Puts (shares) | 0 | 9,100 | −100.0% |
| Put/call ratio | – | 0.06 | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ZYME
All superinvestors →
Who owns ZYME
share of fund held shares- Index and passive funds14.6%
- Active managers and hedge funds74.1%
- Banks and brokers10.8%
- Pensions, insurers and other0.5%
The top 10 holders own 73.6% of all ZYME shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
36 funds changed their position- Assenagon Asset Management S.A.Trimmed−996K sh
- Capricorn Fund Managers LtdSold out−487K sh
- Principal Financial Group IncSold out−85K sh
- Y-Intercept (Hong Kong) LtdTrimmed−65K sh
- Calamos Advisors LLCNew+47K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | EcoR1 Capital, LLC | 32.37% | 23M | $600M | 0 |
| 2 | Rubric Capital Management LP | 9.86% | 7M | $183M | 0 |
| 3 | BlackRock, Inc. | 5.99% | 4.3M | $111M | −303K |
| 4 | Perceptive Advisors LLC | 5.89% | 4.2M | $109M | +673K |
| 5 | Bvf Inc/il | 5.14% | 3.6M | $95.4M | −85K |
| 6 | Assenagon Asset Management S.A. | 3.53% | 2.5M | $65.5M | +1.8M |
| 7 | Morgan Stanley | 3.14% | 2.2M | $58.3M | −249K |
| 8 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 2.51% | 1.8M | $46.6M | −127K |
| 9 | Vanguard Capital Management LLC | 2.20% | 1.6M | $40.8M | −147K |
| 10 | Nextech Invest Ltd. | 1.57% | 1.1M | $29.1M | 0 |
- Assenagon Asset Management S.A.+1.8M sh+$46.4M
- Nomura Asset Management International Inc.+890K sh+$23.3M
- Perceptive Advisors LLC+673K sh+$17.6M
- First Trust Advisors LP+340K sh+$8.9M
- Pictet Asset Management Holding SA+299K sh+$7.2M
- Prosight Management, LP+135K sh+$3.5M
- State of Wisconsin Investment Board+89K sh+$2.3M
- Granahan Investment Management, LLC+85K sh+$2.2M
- Mpm Bioimpact LLC−565K sh−$14.2M
- Nuveen, LLC−532K sh−$13.9M
- Deutsche Bank Ag\−524K sh−$13.7M
- Capricorn Fund Managers Ltd−521K sh−$13.6M
- Arrowstreet Capital, Limited Partnership−325K sh−$8.5M
- BlackRock, Inc.−303K sh−$7.9M
- Royce & Associates LP−299K sh−$7.5M
- Morgan Stanley−249K sh−$6.5M
ZYME institutional ownership FAQ
Who owns the most ZYME stock?
In Q2 2026 13F filings the largest holder of ZYME was EcoR1 Capital, LLC, followed by Rubric Capital Management LP and BlackRock, Inc.. Index fund managers are usually the biggest holders of large companies.
What percentage of ZYME is owned by institutions?
Funds that file 13F reports held 98.1% of ZYME's shares at Jun 30, 2026, compared with 99.1% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying ZYME?
In Q2 2026, 85 funds bought ZYME (23 of them new positions) and 102 sold (29 sold out completely). Among well known investors, 0 added and 1 cut. Our fund sentiment for ZYME is strongly bearish.
What is ZYME's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this ZYME ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.