NEW YORK (AP) — China’s e-commerce giant Alibaba began trading its shares Friday on the New York Stock Exchange. Here are ten things to know about Alibaba, and why its initial public offering made history:

THE BIGGEST: Alibaba raised $21.8 billion in its debut, making it the biggest U.S.-listed IPO in history after the IPO of credit card processing company Visa in 2008. If Alibaba’s investment banks were to exercise their option to sell an additional 48 million shares, it could make Alibaba’s IPO the biggest in the world, beating out the $22 billion IPO of Agricultural Bank of China in 2010.