Zai Lab shares are trading higher by 4% during Friday's session. The company priced a $200 million public offering.

Following the big earnings-driven rally for Rocket Lab yesterday, Cathie Wood's Ark Invest firm has moved to take some profits on the stock. The high-profile investor isn't the only one selling shares ...

The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...