Kior sold 10 million shares below its $19 to $21 per share range and two of its investors, venture capital firms Khosla Ventures and Artis Capital Management, said they would buy up to 3.5 million shares at its listing price in the initial public offering, according to its regulatory filing.

Advanced Equities owns 28.2% of Force10's shares but has decided against advising on the portfolio company's flotation.

Wintech, which is Ambarella's largest customer, owns 7.6% of Ambarella ahead of the portfolio company's flotation.

Applied Ventures, the corporate venturing fund of Nasdaq-listed electronics company Applied Materials, owns 6.3% of Enphase having invested about $5.5m in its series B through to E rounds and $2.44m in a convertible loan earlier this month, according to the portfolio company's regulatory filing.

The US-based search engine reportedly took an about $25m stake, which looks set to be worth more than $37.5m after holiday website HomeAway set its listing range.

Fusion-io floats with corporate backers including Dell Ventures, Sumitomo Ventures and reportedly Samsung Ventures.

PTT Chemical owns 47.9% of Myriant after it invested $60m in January.

Corporate venturing backers behind coupon company Groupon could reap 200 times return on its flotation.

The company issued nearly 11 million shares at $18 each compared to an expected upper range of $17 per share prior to its initial public offering. A further 1.65 million shares can be sold if demand remains strong as it began trading at $20 each.

Active Network offered 8.2 million shares in its flotation, and selling stockholders sold 2.8 million.