SIMPLEX TRADING, LLC

Position in ZLAB — Zai Lab Ltd

CIK 1488542 CHICAGO, IL

Position in ZLAB

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$50,483

+$17,848 QoQ

Shares Held

2,657

+53.1% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#61

of 92 holders

Holding Since

Mar 2020

16 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $83,352,766 across 183 Biotechnology names. ZLAB ranks #103 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MRNA	Moderna, Inc.	154,558	$10,823,696
2	QURE	uniQure N.V.	110,219	$5,076,687
3	ERAS	Erasca, Inc.	276,988	$5,074,420
4	AXSM	Axsome Therapeutics, Inc.	19,643	$4,808,017
5	BBIO	BridgeBio Pharma, Inc.	55,535	$4,136,246
6	ALNY	Alnylam Pharmaceuticals, Inc.	11,567	$3,482,014
7	ARWR	Arrowhead Pharmaceuticals, Inc.	29,002	$2,363,953
8	SLS	SELLAS Life Sciences Group, Inc.	154,099	$2,274,501

16 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$50,483	2,657	+53.1%	Shares	Sole	2026-08-12
2026-03-31	$32,635	1,735	+902.9%	Shares	Sole	2026-05-14
2025-12-31	$3,051	173	-49.0%	Shares	Sole	2026-02-11
2024-12-31	$8	339	-97.2%	Shares	Sole	2025-02-11
2024-09-30	$294,435	12,197	-57.2%	Shares	Sole	2024-11-08
2024-06-30	$494,424	28,530	-28.0%	Shares	Sole	2024-07-25
2024-03-31	$634,824	39,627	+167.9%	Shares	Sole	2024-04-25
2023-12-31	$404,292	14,793	-9.1%	Shares	Sole	2024-02-02
2023-09-30	$395,669	16,276	+11.6%	Shares	Sole	2023-11-01
2023-06-30	$404,358	14,582	+1346.6%	Shares	Sole	2023-08-04
2022-03-31	$44,331	1,008	+286.2%	Shares	Sole	2022-05-02
2021-12-31	$16,403	261	-24.3%	Shares	Sole	2022-02-23
2021-09-30	$36,359	345	0.0%	Shares	Sole	2021-10-28
2021-06-30	$61,061	345	-63.2%	Shares	Sole	2021-08-12
2021-03-31	$125,157	938	+505.2%	Shares	Sole	2021-04-26
2020-03-31	$7,979	155	—	Shares	Sole	2020-04-29
No filing history on record for this holder in this stock.