The numbers as of June 27, reflected in the , more than doubled the $5.2 billion in IPOs in the year-earlier quarter. This year there were 47 individual IPOs, up form 41 in last year's period. And PwC said May was the most active month for offerings, generating nearly half of them. In May, 22 IPOs yielded $6.2 billion.

In commenting on the activity, Henri Leveque, leader of PwC's Capital Markets and Accounting Advisory Practice, said that larger offerings are being completed and "a growing number of companies are entering the pipeline." He added: "Despite the recent volatility in the capital markets we are optimistic that the IPO market will continue its resurgence and remain an important source of liquidity and capital for both domestic and foreign companies."

The registration process continues to draw more IPO candidates, as well, with 77 more companies entering the pipeline, according toe PwC -- an increase from 52 in the first period. It said onlh one planned offering was withdrawn in the latest quarter.

The year-to-date IPO results show 79 offerings being priced to generate $24.3 billion, again more than double the first-half amount in 2010, when 70 IPOs that generated $9.4 billion.