After Coupang soars in US IPO, can it deliver for the long term?

SEOUL -- Bom Suk Kim is still not mentioned in the same breath as Jack Ma as an Asian business hero, but his company -- South Korea's Coupang -- has made one of the splashiest public debuts on the U.S. stock market since Ma's Alibaba Group Holding wowed investors in 2014.

On Thursday Coupang, the e-commerce company that over a decade has carved out a massive slice of South Korean retail, arrived on the New York Stock Exchange via a $4.6 billion initial public offering.