IPO market stages busiest day for debuts since November 2007 as it slowly comes back to life

IPO market stages busiest day since Nov. 2007

NEW YORK — Shares of six initial public offerings competing for investors’ attention are mixed in their trading debuts in the busiest day for IPOs since November 2007.

Initial investors are still price-sensitive as the IPO market slowly comes back to life. Only SPS Commerce raised more than it had hoped in a $49 million deal.

DynaVox, a speech-generating software maker, and Codexis, a biofuels company that also serves the pharmaceutical market, are rising after pricing their IPOs at the bottom of expected ranges.

Seismic data provider Global Geophysical Services, biotechnology company Alimera Sciences and communications company Mitel Networks priced shares below expectations.

Mitel is down 9 percent, while Global Geophysical is slipping. Alimera is higher.