How many institutions held ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share in Q2 2025?

179 institutional investors reported ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share for Q2 2025. Use the holders table for investor-level position and value details.

Zymeworks Inc. - Common Stock, $0.00001 par value per share (ZYME)

Q: What does CUSIP 98985Y108 represent in this 13F holders report?

CUSIP 98985Y108 is the security identifier for ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share used to aggregate holder disclosures.

CUSIP: 98985Y108

Q2 2025 13F Holders as of 30 Jun 2025

Security type / class: Equity / Common Stock, $0.00001 par value per share
Total 13F shares: 75,621,323
Total 13F value: $949,023,010
Share change: +5,300,951
Put/Call ratio: 22%
SEC-reported price per share: $12.55
Number of holders: 179
Value change: +$68,009,464
Number of buys: 90
Number of sells: 84
Shares outstanding: 73,761,855

Security key

98985Y108

Report period

Q2 2025

Institutions

179

Top holders

ZYME full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 Zymeworks Inc. SEC filings Zymeworks Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 98985Y108

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BlackRock, Inc.

Disclosed value leader

EcoR1 Capital, LLC

Comparable rows

1/15

Latest evidence

26 Jun 2025

13F 13D/G 3/4/5 Lead comparable stake: 4.8% 14 rows are not safely comparable across share classes. 13D/G row: BlackRock, Inc. Showing 1-6 of 15 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 4.8%.

1 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock, Inc.'s linked filing trail.

Comparable ownership Top 1

BlackRock, Inc. 4.8%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	4.8% Reported 13D/G · 30 Jun 2025	$48,705,003 4,089,421 shares	—	31 Mar 2025
EcoR1 Capital, LLC	3/4/5 13F Director, 10%+ Owner · Company 3/4/5 13F	— mixed-class rows	$341,953,624 28,056,909 shares mixed-class rows	—	26 Jun 2025
Oleg Nodelman	3/4/5 Director, 10%+ Owner 3/4/5	— denominator unverified	$218,112,518 15,720,161 shares	—	17 Feb 2025
Redmile Group, LLC	13F 3/4/5 Company · 10%+ Owner 13F 3/4/5	— denominator unverified	$57,036,335 4,788,945 shares	—	31 Mar 2025
Rubric Capital Management LP	13F Company 13F	— denominator unverified	$51,670,868 4,338,444 shares	—	31 Mar 2025
BVF INC/IL	13F Company 13F	— denominator unverified	$51,319,416 4,308,935 shares	—	31 Mar 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

179

75,621,323

Rows available

179

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2025 vs Q1 2025 Across Filers

Q1 2025 holders

182

Q2 2025 holders

179

Holder diff

-3

Investor	Q1 2025 Shares	Q2 2025 Shares	Share Diff	Share Chg %	Q1 2025 value	Q2 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend