Zymeworks Inc. ZYME

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30.94 USD +0.81 (+2.69%)

At closeNov 4, 2026, 4:39 PM EST

30.94 0.00 0.00%

After hours · Nov 4, 4:39 PM ET

30.51 Day range 31.49

16.00 52-week range 31.49

Held by insiders 1.34%

Held by institutions 99.03%

Float held by institutions 100.38%

Institutions 293

Top institutional holders
Holder	% held	Shares	Value	Reported
EcoR1 Capital, LLC	36.46%	22,970,388	710.70M	Jun 29, 2026
Rubric Capital Management LP	11.11%	7,000,000	216.58M	Jun 29, 2026
Blackrock Inc.	6.75%	4,251,030	131.53M	Jun 29, 2026
Perceptive Advisors Llc	6.64%	4,182,953	129.42M	Jun 29, 2026
BVF Inc.	5.79%	3,649,142	112.90M	Jun 29, 2026
Morgan Stanley	3.54%	2,231,260	69.04M	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	46.68M	Jun 29, 2026
iShares Trust-iShares Russell 2000 ETF	1.88%	1,185,928	36.69M	Sep 29, 2026
IVY FUNDS-Nomura Small Cap Growth Fund	0.95%	600,846	18.59M	Jun 29, 2026
iShares Trust-iShares Biotechnology ETF	0.85%	538,110	16.65M	Sep 29, 2026
Fidelity Salem Street Trust-Fidelity Small Cap Index Fund	0.82%	514,484	15.92M	Aug 30, 2026
iShares Trust-iShares Russell 2000 Growth ETF	0.68%	425,949	13.18M	Sep 29, 2026

ZYME 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

Held by funds