This has been a busy year for tech IPOs. Linkedin (LNKD) and Yandex (YNDX) were two very large tech IPOs that drew a lot of attention. The buzz from these stocks seemed to help other tech IPOs which traded above the original offering price but have had varying levels of success since then. Here is our analysis of four of this year’s tech IPOs.

Zillow Inc (Z) Zillow, Inc. provides real estate information online through its website zillow.com. The online real estate company provides provides real estate information on 100 million homes and real estate properties in the United States. The company uses its website and mobile applications to disseminate information about homes and real estate listings and mortgages. The company also provides a way for home homeowners, buyers, sellers, and renters to contact real estate agents and mortgage officers.

Zillow Inc has a market cap of $506.26 million and is currently trading at $36.43. The company went public on July 20, 2011. The initial offering was for 3.46 million shares at $20.00. The stock opened at $46.56. This was quite a good start for the stock as it was first proposed to start trading in the $12.00 to $14.00 range. The company has increased revenue from $17.49 million in 2009 to $24.61 million in 2010. Operating income has improved from -$12.97 million in 2009 to -$6.84 million in 2010. The company had 17 million users in the month ending March 31 2011. To continue reading, click here.