Here are a few stocks to keep on your radar:

• Amazon.com (NASDAQ:AMZN) shares rose 1.5% after the company beat Wall Street’s revenue estimates but missed first-quarter profit expectations as it spends to ramp up distribution center build-out and marketing of its Prime service.
• SuccessFactors (NASDAQ:SFSF) tumbled 7.5% despite the company beating first-quarter profit and revenue estimates and forecasting second-quarter revenue above current expectations. BMO Capital noted on Wednesday, however, that billings and cash flow were perhaps a little light for some investors’ tastes.
• Broadcom (NASDAQ:BRCM) shares shed nearly 11% after its first-quarter earnings report late Tuesday that included a projection that second-quarter revenue would be below Wall Street’s estimates.
• Savvis (NASDAQ:SVVS) rose 8.2% after news that the company would be acquired by CenturyLink (NYSE:CTL) in a cash-and-stock deal worth about $2.5 billion.
• Buffalo Wild Wings (NASDAQ:BWLD) slipped 1.4% despite beating analysts’ first-quarter profit and revenue expectations.