Morning Market Movers

OvaScience, Inc. OVAS shares jumped 34.01% to $46.85 on analyst upgrade and several price target raises. Mobile Telesystems OJSC MBT shares surged 28.77% to $8.28. Key Energy Services Inc. KEG gained 20.33% to $1.42. RBC Capital upgraded Key Energy Services from Sector Perform to Outperform and lowered the price target from $5.00 to $4.00. VimpelCom Ltd. VIP shares climbed 15.80% to $4.25 after gaining 11.55% on Wednesday. VimpelCom announced the launch of its 'Make Your Mark' initiative. Agenus Inc. AGEN shares surged 13.43% to $3.80 after the company announced that its Phase 3 Study of GSK Shingles Vaccine containing Agenus Adjuvant met primary endpoint. Rite Aid Corporation RAD shares surged 12.78% to $6.83 after the company reported upbeat Q3 earnings and raised its FY15 outlook ZAGG Inc ZAGG shares climbed 12.76% to $6.01 after the company raised its FY14 guidance. Energy XXI Ltd. EXXI shares jumped 9.60% to $3.54 after rising 24.23% on Wednesday. Oracle Corporation ORCL shares surged 6.20% to $43.71 after the company reported better-than-expected fiscal second-quarter results. Jabil Circuit Inc. JBL shares gained 4.83% to $21.04 after the company reported upbeat first-quarter results and issued a strong outlook.