Company · Ownership research

Zymeworks Inc. ZYME

CIK 0001937653 · CUSIP 98985Y108

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 98985Y108 (ZYME), not CUSIP 98985Y908 (ZYME), CUSIP 98985Y958 (ZYME), CUSIP 98985W102 (ZYME), and does not merge CUSIPs.

This page lists the top 20 of 172 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	EcoR1 Capital, LLC CIK 1587114 · View history	$141.36M 13,437,473 shares	3.59%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
02	BVF INC/IL CIK 1056807 · View history	$61.75M 5,870,000 shares	1.70%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
03	Redmile Group, LLC CIK 1425738 · View history	$58.50M 5,560,798 shares	2.15%	-229.43K(-4.00%)Reduced	SEC filing ↗ May 15, 2024	▾
04	MORGAN STANLEY CIK 895421 · Amended · View history	$53.77M 5,111,144 shares	0.00%	+249.86K(+5.10%)Added	SEC filing ↗ Oct 17, 2024	▾
05	BlackRock Inc. CIK 1364742 · View history	$43.09M 4,095,729 shares	0.00%	+172.40K(+4.40%)Added	SEC filing ↗ May 10, 2024	▾
06	Rubric Capital Management LP CIK 1687509 · View history	$36.56M 3,475,384 shares	1.08%	0(0.00%)Unchanged	SEC filing ↗ May 10, 2024	▾
07	VANGUARD GROUP INC CIK 102909 · View history	$25.86M 2,458,105 shares	0.00%	+63.39K(+2.60%)Added	SEC filing ↗ May 10, 2024	▾
08	BNP PARIBAS ASSET MANAGEMENT Holding S.A. CIK 1520354 · View history	$20.07M 1,907,714 shares	0.05%	+135.94K(+7.70%)Added	SEC filing ↗ May 8, 2024	▾
09	CREDIT SUISSE AG/ CIK 824468 · View history	$19.94M 1,895,757 shares	0.02%	-407.86K(-17.70%)Reduced	SEC filing ↗ May 10, 2024	▾
10	FARALLON CAPITAL MANAGEMENT LLC CIK 909661 · Amended · View history	$16.84M 1,601,000 shares	0.10%	-155.00K(-8.80%)Reduced	SEC filing ↗ May 24, 2024	▾
11	Samsara BioCapital, LLC CIK 1744967 · View history	$15.35M 1,458,875 shares	2.37%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
12	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$13.72M 1,305,057 shares	0.05%	+51.04K(+4.10%)Added	SEC filing ↗ May 10, 2024	▾
13	TANG CAPITAL MANAGEMENT LLC CIK 1232621 · View history	$11.57M 1,100,000 shares	1.20%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
14	PERCEPTIVE ADVISORS LLC CIK 1224962 · Amended · View history	$11.31M 1,074,807 shares	0.20%	0(0.00%)Unchanged	SEC filing ↗ Aug 6, 2024	▾
15	CITADEL ADVISORS LLC CIK 1423053 · View history	$11.20M 1,064,987 shares	0.01%	+891.41K(+513.60%)Added	SEC filing ↗ May 15, 2024	▾
16	STATE STREET CORP CIK 93751 · View history	$11.03M 1,048,732 shares	0.00%	+40.92K(+4.10%)Added	SEC filing ↗ May 15, 2024	▾
17	DEUTSCHE BANK AG\ CIK 948046 · Amended · View history	$9.35M 889,250 shares	0.00%	+615(+0.10%)Added	SEC filing ↗ Jun 2, 2025	▾
18	JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history	$7.54M 716,482 shares	0.03%	+348.44K(+94.70%)Added	SEC filing ↗ May 15, 2024	▾
19	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$7.39M 702,683 shares	0.15%	+22.37K(+3.30%)Added	SEC filing ↗ May 15, 2024	▾
20	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$7.04M 668,984 shares	0.00%	+29.31K(+4.60%)Added	SEC filing ↗ May 13, 2024	▾

Showing 20 / 172 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

172

Cancelled or null records excluded

Disclosed shares

67,780,725

Not deduplicated across managers

Disclosed value

$713.01M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Zymeworks Inc. · Q1 2024

Explore all 172 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.