NEW YORK ( TheStreet) -- Facebook ( FB) was a big loser in premarket trading on Tuesday as investors continued to weigh the largest-ever tech IPO. Shares of the social networking giant fell 2.01% to $31.37 before market open. Facebook, which closed down 3.39% on Friday, was also one of the most active Nasdaq stocks on share volume of 240,755. Social gamer and key Facebook partner Zynga ( ZNGA) was another premarket laggard. Shares of the FarmVille and Mafia Wars creator mirrored Facebook, slipping 1.66% to $6.50 in premarket trading. Zynga was also another active Nasdaq stock on share volume of 41,103. Shares of Apple ( AAPL), however, gained 0.91% to $567.39. Tech giant HP ( HPQ), which reported strong second-quarter results last week, crept up 0.54% to $22.45. --Written by James Rogers in New York. >To follow the writer on Twitter, go to http://twitter.com/jamesjrogers. >To submit a news tip, send an email to: firstname.lastname@example.org. Check out our new tech blog, Tech Trends. Follow TheStreet Tech on your wireless devices.