Arena Pharmaceuticals Inc. (ARNA) Shares Rise On Study

Shares of diet-drug developer Arena Pharmaceuticals Inc. (ARNA) jumped 22 percent Thursday, the most intraday since June 2009. The spike is attributed to the company’s experimental drug weight-loss trial results BLOOM (Behavioral modification and Lorcaserin for Overweight and Obesity Management), which could become the company’s first marketed product if approved by the Food and Drug [...]