The companies whose shares are moving in premarket trade Wednesday are: Acadia Pharmaceuticals Citigroup Inc., Fossil Inc., Dendreon Corp., Zynga Inc., Titan Machinery Inc., Staples Inc., Vodafone Group PLC and Corning Inc.

Shares of Acadia Pharmaceuticals Inc. (Nasdaq: ACAD) climbed 58.23 percent to $2.50.

Citigroup Inc. (NYSE: C) climbed 4.10 percent to $28.93. The stock has a 52-week low of $21.40, a 52-week high of $43.06 and $81.48 billion in market capitalization.

Fossil Inc. (Nasdaq: FOSL) rose 2.80 percent to $73.75. The stock has a 52-week low of $69.57, a 52-week high of $139.20 and $4.44 billion in market capitalization.

Dendreon Corp. (Nasdaq: DNDN) rose 2.49 percent to $9.06. The stock has a 52-week low of $6.46, a 52-week high of $42.87 and $1.36 billion in market capitalization. The company is planning to trim the cost of goods sold by two-thirds by automating certain tasks at its cancer vaccine plants.

Zynga Inc. (Nasdaq: ZNGA) rose 2.10 percent to $8.74. The stock has a 52-week low of $7.34, a 52-week high of $15.91 and $6.31 billion in market capitalization.

Titan Machinery Inc. (Nasdaq: TITN) fell 9.44 percent to $28.

Staples Inc.  (Nasdaq: SPLS) fell 2.64 percent to $14.36. The company said its first-quarter net income fell to $187.06 million from $198.24 million a year earlier.

Vodafone Group PLC (Nasdaq: VOD) fell 1.39 percent to $26.94. The company has announced changes to its board of directors,  including the retirement of John Buchanan from the post of deputy chairman and senior independent director.

Corning Inc. (NYSE: GLW) fell 1.22 percent to $13. The stock has a 52-week low of $11.51, a 52-week high of $21.02 and $19.95 billion in market capitalization.