Facebook has filed paperwork for an initial public offering of stock. Its public debut will be the most anticipated tech IPO since Google went public in August 2004. Meanwhile, online reviews site Yelp Inc. began trading publicly this month.

Below is a look at how the stocks of some recently public companies are faring. The companies are all loosely Internet-related, though their businesses vary widely.

-- Yelp Inc., developer of online games, first day of trading on March 2, 2012

Pricing: $15 per share

First-day's close: $24.58, up 64 percent from IPO price

Friday's close: $26.89, up 79 percent from IPO price

Trading range since IPO: $19.36 to $31.96

-- Zynga Inc., developer of online games, first day of trading on Dec. 16, 2011

Pricing: $10 per share

First-day close: $9.50, down 5 percent from IPO price

Friday's close: $13.15, up 32 percent from IPO price

Trading range since IPO: $7.97 to $15.91

-- Jive Software Inc., creator of tools to run social networks for businesses, first day of trading on Dec. 13

Pricing: $12 per share

First-day close: $15.05, up 25 percent from IPO price

Friday's close: $27.16, more than double IPO price

Trading range since IPO: $14.18 to $28.15

-- Angie's List Inc., consumer-reviews site, first day of trading on Nov. 17

Pricing: $13 per share

First-day close: $16.26, up 25 percent from IPO price

Friday's close: $18.89, up 45 percent from IPO price

Trading range since IPO: $10.77 to $19.82

-- Groupon Inc., online deals company, first day of trading on Nov. 4

Pricing: $20 per share

First-day close: $26.11, up 31 percent from IPO price

Friday's close: $18.38, down 8 percent from IPO price.

Trading range since IPO: $14.85 to $31.14

-- Pandora Media Inc., Internet radio company, first day of trading on June 15

Pricing: $16 per share

First-day close: $17.42, up 9 percent from IPO price

Friday's close: $10.21, down 36 percent from IPO price

Trading range since IPO: $9.15 to $26

-- LinkedIn Corp., online professional network, first day of trading on May 19

Pricing: $45 per share

First-day close: $94.25, more than double IPO price

Friday's close: $101.99, more than double IPO price

Trading range since IPO: $55.98 to $122.70

-- Demand Media Inc., online content publisher, first day of trading on Jan. 26, 2011

Pricing: $17 per share

First-day close: $22.65, up 33 percent

Friday's close: $7.25, down 57 percent from IPO price

Trading range since IPO: $5.24 to $27.38

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