Advantest (OTCMKTS:ATEYY – Get Free Report) was upgraded by stock analysts at Zacks Research from a “hold” rating to a “strong-buy” rating in a research note issued on Monday,Zacks.com reports. The Goldman Sachs Group lowered shares of Advantest from a “buy” rating to a “neutral” rating in a research report on Wednesday, October 8th. Wall Street Zen lowered shares of Advantest from a “buy” rating to a “hold” rating in a research report on Saturday, November 1st. Get Advantest alerts:Check Out Our Latest Stock Report on ATEYYAdvantest Price PerformanceAdvantest stock traded up $30.65 during mid-day trading on Monday, reaching $192.89. Advantest (OTCMKTS:ATEYY – Get Free Report) last released its quarterly earnings results on Wednesday, January 28th.