In November, news broke that Graff is preparing an initial public offering in Hong Kong of his main asset, Graff Diamonds International.

FORBES: Laurence Graff

Alibaba is preparing for an IPO that could put it in the upper reaches of initial stock sales, with echoes of Facebook hysteria to come.

FORBES: What's The Market Price For China's Public Square? Try $3.3 Billion

Facebook Inc. is preparing its initial public offering for May, according to people familiar with the matter, in what is shaping up to be the largest-ever U.S. Internet offering.

WSJ: Facebook Targeting May IPO