Skip to main content

GROUP ONE TRADING LLC

Position in ZLAB — Zai Lab Ltd

CIK 932540 CHICAGO, IL

Position in ZLAB

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$145,175
-$190,549 QoQ
Shares Held
7,718
-59.4% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2021
16 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ZLAB Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $126,595,183 across 210 Biotechnology names. ZLAB ranks #74 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ZLAB

Export CSV
16 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $145,175 7,718
2025-12-31 $335,724 19,032
2025-03-31 $20,129 557
2024-12-31 $131,735 5,030
2024-09-30 $98,587 4,084
2024-06-30 $50,898 2,937
2023-09-30 $235,855 9,702
2023-06-30 $204,896 7,389
2023-03-31 $147,807 4,444
2022-12-31 $790,924 25,763
2022-09-30 $39,569 1,157
2022-06-30 $116,420 3,357
2022-03-31 $665,901 15,141
2021-12-31 $5,000,471 79,562
2021-09-30 $1,041,358 9,881
2021-03-31 $55,506 416