Morning Market Gainers

shares surged 23.40 percent to $7.70 after the company reported that it has been awarded a contract valued at up to $112 million.

shares jumped 21.94 percent to $52.91 after

announced its plans to acquire Rentrak in an all-stock transaction.

climbed 14 percent to $25.16 after the company agreed to be bought by

for $25.50 per share in cash.

shares jumped 12.62 percent to $4.64 after the company reported that the functional respiratory imaging data from its sponsored clinical trial of INOpulse(R) in COPD patients with pulmonary hypertension was presented today at the European Respiratory Society International Congress 2015.

shares gained 15.57 percent to $79.59. Unisplendour agreed to make a $3.775 billion equity investment in Western Digital.

shares surged 8.23 percent to $5.39 after the company reported that it has entered into definitive merger agreement for a going private transaction.

gained 10.37 percent to $20.23. Chardan Capital upgraded Esperion Therapeutics from Sell to Neutral and lowered the price target from $29.00 to $18.00.

shares rose 10.22 percent to $7.07 after reporting positive top line data from RSV F vaccine Phase 1.

shares gained 9.55 percent to $186.79 following confirmation of Starboard stake. Starboard Value had announced a 3.7 percent stake in Advance Auto Parts.

shares jumped 10.27 percent to $45.73 after the company announced its plans to acquire

in an all-stock transaction.