Zai Lab ZLAB Institutional Ownership

NASDAQ ZLAB

$26.23 -0.77 (-2.85%)

As of: Sep 4, 2026 · 3:59 PM EDT

Institutions by Trading Activity

94 Institutions

Increased 45 47.9%

Unchanged 20 21.3%

Reduced 29 30.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

38.59%

▲+13.09 pp QoQ

Shares Held by Institutions

43.10Mn

of 111.70Mn outstanding

▲+56.34% QoQ

Shares Outstanding

111.70Mn

68.60Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-4 vs prior quarter

Net Shares Added (QoQ)

+15.53Mn

accumulated since last quarter

Value of Holdings

$1.16Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Zai Lab Ltd (NASDAQ:ZLAB) appears in 94 institutional 13F filings for the quarter ending June 2026.

Their combined ownership stood at 38.6% of outstanding shares in June 2026, up from 25.5% in March 2026.
Their total shares held in ZLAB increased 56.34% from the prior quarter, while the number of investors in Zai Lab decreased 39.35% year over year.
Among the 94 funds, 45 bought more Zai Lab shares, 29 sold down, and 20 held their ground.
Altogether, these fund groups held 43.1Mn shares in ZLAB by June 2026, up by 15.53Mn shares quarter on quarter, and up 1.03Mn shares year over year.
As of June 30, 2026, RTW INVESTMENTS, LP held the largest stake in Zai Lab with 6.57Mn shares, accounting for 5.89% of total shares outstanding.
Top purchasers of ZLAB stock for the quarter ending June 2026 included TCG Crossover Management, LLC (6.14Mn), Woodline Partners LP (2.21Mn), Goldman Sachs Group Inc (2.2Mn), ADAR1 Capital Management, LLC (1.94Mn), FMR LLC (1.55Mn).
Leading sellers of Zai Lab shares for the quarter ending June 2026 were UBS Group AG (434.74K), CITADEL ADVISORS LLC (403.93K), BlackRock, Inc. (200.68K), SUPERSTRING CAPITAL MANAGEMENT LP (120.0K), DIMENSIONAL FUND ADVISORS LP (72.24K).
Business Quant data shows the 10 biggest positions in Zai Lab as of June 2026 are held by RTW INVESTMENTS, LP (6.57Mn), TCG Crossover Management, LLC (6.14Mn), RA CAPITAL MANAGEMENT, L.P. (5.74Mn), ADAR1 Capital Management, LLC (3.37Mn), FMR LLC (2.82Mn), Goldman Sachs Group Inc (2.32Mn), Woodline Partners LP (2.21Mn), Frazier Life Sciences Management, L.P. (1.9Mn), BAMCO INC /NY/ (1.62Mn), TWO SIGMA INVESTMENTS, LP (1.3Mn).

Form 13F Holdings

94 Institutional Holders

Report period 30 Jun, 2026

Total shares held 43.10Mn

Of outstanding 38.59%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	RTW INVESTMENTS, LP	0001493215	6,574,032	5.89%	0	0.00%	$124.91Mn
2	TCG Crossover Management, LLC	0001839948	6,137,627	5.49%	▲6,137,627	0.00%	$116.61Mn
3	RA CAPITAL MANAGEMENT, L.P.	0001346824	5,743,533	5.14%	▲36,271	+0.64%	$109.13Mn
4	ADAR1 Capital Management, LLC	0001940272	3,369,034	3.02%	▲1,943,667	+136.36%	$64.01Mn
5	FMR LLC	0000315066	2,815,214	2.52%	▲1,552,823	+123.01%	$53.49Mn
6	Goldman Sachs Group Inc	0000886982	2,315,480	2.07%	▲2,204,893	+1,993.81%	$43.99Mn
7	Woodline Partners LP	0001784547	2,207,293	1.98%	▲2,207,293	0.00%	$41.94Mn
8	Frazier Life Sciences Management, L.P.	0001892134	1,902,320	1.70%	0	0.00%	$36.14Mn
9	BAMCO INC /NY/	0001017918	1,623,694	1.45%	▼34,624	-2.09%	$30.85Mn
10	TWO SIGMA INVESTMENTS, LP	0001179392	1,299,394	1.16%	▲989,671	+319.53%	$24.69Mn
11	CITADEL ADVISORS LLC	0001423053	1,284,706	1.15%	▼403,926	-23.92%	$24.41Mn
12	Rock Springs Capital Management LP	0001595725	814,707	0.73%	0	0.00%	$15.48Mn
13	BlackRock, Inc.	0002012383	664,462	0.59%	▼200,684	-23.20%	$12.62Mn
14	C WorldWide Group Holding A/S	0001625244	510,000	0.46%	0	0.00%	$9.69K
15	JANE STREET GROUP, LLC	0001595888	476,541	0.43%	▲208,615	+77.86%	$9.05Mn
16	B Group, Inc.	0002043476	450,646	0.40%	0	0.00%	$8.56Mn
17	SCHRODER INVESTMENT MANAGEMENT GROUP	0001086619	393,167	0.35%	0	0.00%	$7.24Mn
18	NAN FUNG TRINITY (HK) Ltd	0001781880	346,466	0.31%	0	0.00%	$6.58Mn
19	Aberdeen Group plc	0001716774	311,294	0.28%	▲73,555	+30.94%	$5.91Mn
20	Citigroup Inc	0000831001	300,775	0.27%	▲299,816	+31,263.40%	$5.71Mn

Showing 1 to 20 of 94 holders