NEW YORK ( TheStreet) -- Microsoft ( MSFT) was a leader in premarket trading on Friday after the company's better-than-expected third-quarter earnings. The software giant on Thursday reported earnings of 60 cents a share on $17.41 billion in revenue. Analysts polled by Thomson Reuters had expected earnings of 57 cents a share on $17.16 billion in revenue. Microsoft said that business PC upgrades helped drive Windows revenue. The Redmond, Wash.-based firm cited broad-based growth geographically, noting particular strength in Europe. Shares of Microsoft rose 3.64% to $32.14 on Friday. AMD ( AMD), which easily beat Wall Street's forecasts in its first-quarter results on Thursday, enjoyed a more modest gain. Shares of the No. 2 chipmaker were up 2.01% to $8.13 in premarket trading. For the second quarter, AMD said it expects revenue to increase 3% sequentially, plus or minus 3 percentage points. eBay ( EBAY) shares were up 0.94% to $41 on Friday, still basking in the glow of the company's strong second-quarter results, released on Wednesday. The online auctioneer's shares closed up 13.24% on Thursday. Riverbed ( RVBD), however, was a major laggard as the company's stock tumbled 23.55% to $21.30 on Friday. The networking specialist fell short of Wall Street's revenue forecast in its first-quarter results, released late on Thursday. Riverbed was the most active Nasdaq stock in premarket trading on share volume of 1,599,911. Shares of big data specialist Splunk ( SPLK), which began trading as a public company on Thursday, were flat in premarket trading. Splunk's shares closed up 108.71% in its public debut. --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.