Wall Street Just Turned Bullish on This Hot Technology Stock: Time to Buy?

An analyst upgrade highlights the case for investing in this exciting growth company. Machine vision company Cognex (CGNX -0.08%) recently received an analyst rating upgrade from hold to buy from HSBC. In addition, the price target was raised from $40 to $52. There's no doubt Cognex's fortunes are improving (the company returned to revenue growth in its last quarter). But is it enough to follow HSBC's lead and take a bullish opinion on the stock? As the HSBC analyst notes, the semiconductor and logistics ma ...