With the first-quarter round of 13F filings behind us it is time to take a look at the stocks in which some of the best money managers in the world preferred to invest or sell heading into the second quarter of 2021. One of these stocks was Zai Lab Limited (NASDAQ:ZLAB). Zai Lab Limited (NASDAQ:ZLAB) has experienced an increase in activity from the world's largest hedge funds lately. Zai Lab Limited (NASDAQ:ZLAB) was in 32 hedge funds' portfolios at the end of March. The all time high for this statistic was previously 30.