Update (9:34 a.m.): Updated with Wednesday market open information. NEW YORK (TheStreet) -- UBS decreased its price target on Twitter (TWTR) to $35 and set a "sell" rating. The firm notes user and engagement numbers are underperforming. The stock was down 12.41% to $37.33 at 9:34 a.m. on Wednesday. STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more. TWTR data by YCharts STOCKS TO BUY: TheStreet's Stocks Under $10 has identified a handful of stocks that can potentially TRIPLE in the next 12-months. Learn more.