RingCentral (RNG) closed the last trading session at $30.76, gaining 7.4% over the past four weeks, but there could be plenty of upside left in the stock if short-term price targets set by Wall Street analysts are any guide. The mean price target of $39 indicates a 26.8% upside potential.The average comprises 20 short-term price targets ranging from a low of $28 to a high of $52, with a standard deviation of $6.42. While the lowest estimate indicates a decline of 9% from the current price level, the most op ...