There were far more offerings from non-U.S. companies in the latest quarter -- 14 of them, compared to 10 in the 2010 quarter -- and their value surged from $600 million to $4.4 billion. That accounted for 37% of total IPO value in the latest quarter. China led the way, contributing eight IPOs, with proceeds of $1.4 billion, compared to six IPOs that raised $300 million over in the same period last year. Other non-U.S. issued IPOs in the second quarter of 2011 came from Greece, France, Australia, Canada, Argentina and the Netherlands.

"The second quarter of 2011 saw resurgence in technology companies returning to the IPO market, representing 37% of total proceeds," said Leveque. "With technology representing approximately 25% of the companies entering the pipeline in the second quarter, technology will be a key sector in the IPO market in 2011."