NEW YORK( TheStreet) -- CA Technologies ( CA) was a big mover in premarket trading on Friday as investors responded to the software maker's fourth-quarter results. The Islandia, N.Y.-based company beat Wall Street's profit estimate, but its 2013 guidance was weaker than expected. CA posted earnings Thursday of 56 cents a share on $1.188 billion in revenue. Wall Street analysts polled by Yahoo! Finance were looking for earnings of 52 cents a share on revenue of $1.19 billion. For fiscal 2013, CA expects to earn $2.45 to $2.53 a share on revenue between $4.85 billion and $4.95 billion. Wall Street analysts are looking for earnings of $2.50 a share on $5.01 billion in revenue. CA's shares were down 2.5% to $25.75 in premarket trading. Nvidia ( NVDA), which reports its first-quarter results before market open on Friday, was down 0.56% at $12.35. Analysts expect the chipmaker to report earnings of 10 cents a share on revenue of $916.7 million. Apple ( AAPL) shares slipped 0.35% to $568.50 before market open. --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: email@example.com. Check out our new tech blog, Tech Trends. Follow TheStreet Tech on your wireless devices.