How many institutions held ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share in Q4 2023?

153 institutional investors reported ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share for Q4 2023. 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

Q4 2023 13F Holders as of 31 Dec 2023

Security type / class: Equity / Common Stock, $0.00001 par value per share
Total 13F shares: 64,825,365
Total 13F value: $673,552,112
Share change: +2,587,468
Put/Call ratio: 80%
SEC-reported price per share: $10.39
Number of holders: 153
Value change: +$31,038,276
Number of buys: 81
Number of sells: 52
Shares outstanding: 73,761,855

Security key

98985Y108

Report period

Q4 2023

Institutions

153

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

Redmile Group, LLC

Disclosed value leader

EcoR1 Capital, LLC

Comparable rows

0/15

Latest evidence

30 Sep 2023

13F 3/4/5 Highest disclosed value: $85,193,579 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

EcoR1 Capital, LLC has the largest disclosed position value at $85.19M.

0 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 EcoR1 Capital, LLC's linked filing trail.

Disclosed position value Top 5

Redmile Group, LLC $35.89M

EcoR1 Capital, LLC $85.19M

BVF INC/IL $37.22M

MORGAN STANLEY $28.43M

BlackRock Finance, Inc. $22.94M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

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

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Redmile Group, LLC	13F 3/4/5 Company · 10%+ Owner 13F 3/4/5	— denominator unverified	$35,892,198 5,661,230 shares	—	30 Sep 2023
EcoR1 Capital, LLC	13F Company 13F	— denominator unverified	$85,193,579 13,437,473 shares	—	30 Sep 2023
BVF INC/IL	13F Company 13F	— denominator unverified	$37,215,800 5,870,000 shares	—	30 Sep 2023
MORGAN STANLEY	13F Company 13F	— denominator unverified	$28,433,113 4,484,718 shares	—	30 Sep 2023
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$22,944,301 3,618,975 shares	—	30 Sep 2023
Rubric Capital Management LP	13F Company 13F	— denominator unverified	$16,809,838 2,651,394 shares	—	30 Sep 2023

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 Q4 2023

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

Institutions

153

64,825,365

Rows available

153

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 Q4 2023 vs Q3 2023 Across Filers

Q3 2023 holders

136

Q4 2023 holders

153

Holder diff

Investor	Q3 2023 Shares	Q4 2023 Shares	Share Diff	Share Chg %	Q3 2023 value	Q4 2023 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend