ZAI LAB LTD-ADR (ZLAB) Institutional Ownership Changes & 13F Activity

ZAI LAB LTD-ADR (ZLAB) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC and Viking Global Investors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2021Viking Global InvestorsBuy743,017743,017$99,141
Q1 2021Renaissance Technologies LLCSell-101,73181,100$10,821
Q1 2020Renaissance Technologies LLCSell-128,800182,831$9,412
Q4 2019Renaissance Technologies LLCSell-57,000311,631$12,961
Q3 2019Renaissance Technologies LLCSell-19,900368,631$11,925
Q2 2019Renaissance Technologies LLCBuy220,731388,531$13,548
Q1 2019Renaissance Technologies LLCBuy145,800167,800$4,952
Q4 2018Renaissance Technologies LLCBuy22,00022,000$511

Frequently asked questions about ZLAB activity

  • Which institutional owners are buying ZLAB?

    Institutional owners buying ZLAB include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ZLAB activity?

    "Buy" means an investor increased their reported position in ZLAB compared to the prior reporting period. This reflects growing exposure to ZAI LAB LTD-ADR (ZLAB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ZLAB increasing?

    Institutional interest in ZLAB can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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