NEW YORK ( TheStreet) -- BlackBerry ( BBRY) was a big loser before market open, tumbling 3.88% to $15.85. Shares of the embattled Canadian handset maker, which recently unveiled its much-delayed BlackBerry 10 technology, have been under pressure recently. The company's stock lost 2.77% during Friday's trading. BlackBerry was also the most active premarket Nasdaq stock on Monday on share volume of 763,942. Zynga ( ZNGA), however, was a winner in premarket trading on Monday, climbing 4.08% to $3.57. The San Francisco firm was also one of the most active pre-market Nasdaq stocks on share volume of 743,208. Shares of the social gamer closed up 11% during Friday's trading, boosted by strong fourth-quarter results and the possibility that New Jersey could legalize online gambling. Zynga partner Facebook ( FB) was another active premarket stock, rising 0.47% to $28.68 on share volume of 127,190. Apple ( AAPL) shares gained 0.37% to $476.75 on share volume of 124,299. Vodafone ( VOD) stock dipped 0.55% to $27.36. Google ( GOOG) shares slipped 0.79% to $779.15 before market open. The company's chairman, Eric Schmidt, plans to sell more than 40% of his shares in the Internet search giant. Cisco ( CSCO), which reports its fiscal second-quarter results after market close on Wednesday, gained 0.61% to reach $21.29. --Written by James Rogers in New York. Follow @jamesjrogers >To submit a news tip, send an email to: firstname.lastname@example.org.