Morning Market Movers

Adamas Pharmaceuticals, Inc. (NASDAQ: ADMS) rose 27.64% to $18.70 after the FDA approved a New Drug Application for Adamas Pharmaceuticals' Namzaric for the treatment of moderate to severe dementia of the Alzheimer's type.

Navigator Holdings Ltd. (NYSE: NVGS) shares climbed 12.06% to $20.06 on positive comments from Jim Cramer on 'Mad Money.'

Achillion Pharmaceuticals, Inc. (NASDAQ: ACHN) shares rose 8.02% to $12.79 after dropping 23.56% on Tuesday.

Digital Ally Inc. (NASDAQ: DGLY) shares jumped 6.10% to $15.70 following news that a black male was shot and killed by police in Missouri.

Virgin America Inc. (NASDAQ: VA) shares gained 4.84% to $37.54 after analysts at multiple firms initiated favorable coverage on the stock.

BioDelivery Sciences International, Inc. (NASDAQ: BDSI) gained 4.49% to $12.53 after the company reported that it has submitted a new drug application for Buprenorphine HCl Buccal Film to manage pain.

GoPro, Inc. (NASDAQ: GPRO) shares rose 4.06% to $64.04 after gaining 6.10% on Tuesday.