Pinterest, Inc. PINS has attracted a wave of bullish calls from Wall Street over the past month, as several analysts raised their price forecasts and reiterated optimistic outlooks.The latest update came from Morgan Stanley, where analyst Brian Nowak upgraded the stock from Equal-Weight to Overweight and increased the price forecast from $37 to $45.Other analysts have also adjusted their price forecasts upward. Wedbush analyst Scott Devitt maintained an Outperform rating, raising the price forecast from $40 ...