Molecular oncology diagnostics company Biocept has raised $19m in their initial public offering by selling 1.9 million shares of common stock.

Alder, which is developing antibodies to fight migraine and arthritis, secured $38m in a 2012 venture round backed by Novo and TPG, and will use the money from the initial public offering to forward testing.

The aldehyde disease specialist, in which Johnson & Johnson owns a 44.5% stake, could potentially raise up to $27.6m from the initial public offering.

Kaiser Permanente-backed Agile plans to use the proceeds from its initial public offering to support clinical trials of its lead product candidate, a weekly contraceptive patch.

US-based cardiovascular drug developer Celladon has raised $50.6m in their initial public offering selling 6.325 million shares at $8 each.

Weibo has become the latest Chinese company to tap the US public markets, targeting $500 million from its initial public offering, and plans to leverage its partnership with minority shareholder Alibaba to maxmise advertising revenue.

Cleveland Clinic-backed healthcare services analytics provider Castlight Health has closed a $204.24m initial public offering

Internet company Yahoo to sell a stake of up to 10% in Alibaba, China's largest e-commerce company, in what will likely be the largest IPO in the US since Facebook.

Aquinox Pharmaceuticals, a Canada clinical-stage pharmaceutical company discovering and developing novel oral drug candidates to treat inflammation and cancer, has listed on Nasdaq as part of an initial public offering. Corporate venturing investors include Johnson & Johnson and Pfizer. The net proceeds of the IPO were about $47m.

Tencent Holdings, the corporate investing unit of China internet group Tencent, has formed a strategic partnership with China e-commerce site, JD.com, which included Tencent acquiring a 15% stake in the business for a reported $214.7m. The move will enable Tencent to gain traction in the China market and beef up its competitiveness against the likes of other internet commerce sites, such as Alibaba.