IPOs from Zynga, Michael Kors and Laredo Petroleum this month have helped revive the market for public offerings, with 28 companies already pricing shares on various stock exchanges this quarter, according to a new report from PricewaterhouseCoopers.

That’s up from 21 last quarter, but down from 64 during the fourth quarter of 2010. Technology is leading the charge with eight companies raising a total of $2.3 billion.

Flickr photo via Mykl Roventine

“A number of blockbuster IPOs in the last few weeks of 2011 has sparked a renewed confidence in the U.S. IPO market, which bodes well for 2012. Potential issuers and the investment community are watching the market very closely to see how IPOs perform, as evident by bellwether offerings causing the window to reopen for short periods of time during the fourth quarter,” said Henri Leveque, leader of PwC’s U.S. Capital Markets and Accounting Advisory Services.

Another positive factor: Thirty eight companies have filed for IPOs so far this quarter from a diverse set of industries.

It’s been a pretty weak year for IPOs in Washington state. Zillow is the only high-tech company to start trading, with shares of the company trading above its $20 offering price.

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