E-commerce company Alibaba has increased its stake in the microblogging platform to 32% through an initial public offering that now appears underpriced.

Mainstay Medical is set to raise up to $36.4m from its initial public offering, with existing shareholder Medtronic to take some of the stock.

Eli Lilly-backed cancer drug developer Cerulean Pharma priced its initial public offering at $7.00, considerably below the range originally set.

The Proteosys-backed pharmaceutical company, formed through a merger last year, is also set to raise $26m from a concurrent private placement to Johnson & Johnson.

Cheetah Mobile, which is majority owned by China-based software company Kingsoft and partially by Tencent, plans to float in the US.

IDG's China subsidiary and private equity firm Jafco both achieved partial exits as the education services provider went public raising $137.7m.

The Rakuten-backed, China-based online travel agency has become the latest China-based company to file for an initial public offering in the United States.

The SAP-backed company, which is developing software to target the call centre market, has secured $70m in an initial public offering that could rise to $80.5m.

E-commerce company Alibaba plans to increase its share in microblogging platform Sina Weibo in its initial public offering, which could generate up to $437m.

Truecar, an online provider of automotive pricing information that counts USAA and Capital One among its key shareholders, has targeted $125m in its initial public offering.