Midday Losers From October 23: Yelp, Alcobra, Ultratech By: Benzinga via Benzinga October 23, 2014 at 13:27 PM EDT Alcobra Ltd(NASDAQ: ADHD) -24% - The company announced the presentationof new data from a Phase III study of ... Read More >> Related Stocks: Arcturus Therapeutics Holdings Inc Yelp Inc