Morning Market Movers

Merrimack Pharmaceuticals MACK climbed 67.88% to $7.37 after the company reported that MM-398 has achieved primary endpoint of overall survival in Phase 3 trial in post-gemcitabine metastatic pancreatic cancer. Weight Watchers International WTW shares gained 17.37% to $23.24 after the company reported upbeat first-quarter results and raised its earnings forecast for the year. NCI NCIT jumped 15.05% to $11.47 after the company reported upbeat Q1 results and issued a strong Q2 outlook. Catamaran CTRX climbed 13.70% to $42.92 after the company reported upbeat results. Proofpoint PFPT jumped 12.81% to $28.70 on better-than-expected Q1 results and FY14 guidance. Gentherm THRM shares rose 8.75 % to $39.53 after the company reported record results for the first quarter. Yelp YELP rose 8.44% to $63.24 after the company reported better-than-expected Q1 results. Analysts at Piper Jaffray upgraded the stock from Neutral to Overweight. Glu Mobile GLUU shares gained 7.37% to $4.29 after the company announced better-than-expected quarterly results. DIRECTV DTV shares jumped 4.54% to $81.12 on rumored AT&T T bid.