The top after-market NASDAQ gainers Friday were Cyclacel Pharmaceuticals Inc, Amicus Therapeutics Inc, UTi Worldwide and Discovery Communications Inc.

The top after-market NASDAQ losers Friday were Diamond Foods Inc, Groupon Inc, RR Donnelley & Sons Company and Clearwire Corporation.

Gainers

Cyclacel Pharmaceuticals Inc (CYCC) shares climbed 3.57 percent to $6.68 in post-market trading. The stock has a 52-week trading range of $2.73 -$8.18 and a market capitalization of 54.40 million.

Amicus Therapeutics Inc (FOLD) shares gained 2.69 percent to $5.34 in post-market trading. The stock has a 52-week trading range of $2.96 - $7.29 and a market capitalization of 257.14 million.

UTi Worldwide (UTIW) shares rose 2.43 percent to $12.90 in post-market trading. The stock has a 52-week low of $12.31, a 52-week high of $17.92 and $1.31 billion in market capitalization.

Discovery Communications Inc (DISCA) shares advanced over one percent to $61.84 in post-market trading. The stock has a 52-week trading range of $39.33 -$63.20 and a market capitalization of 22.73 billion.

Losers

Diamond Foods Inc (DMND) shares declined 3.85 percent to $14.24 in post-market trading. The shares have a 52-week trading range of $12.85-$39.25 and a market capitalization of $327.08 million.

Groupon Inc (GRPN) shares slumped 1.39 percent to $4.62 in post-market trading. The company shares gained 22.97 percent in regular trading on speculations of a Google bid.

RR Donnelley & Sons Company (RRD) shares dropped 1.33 percent to $9.29 in post-market trading. The stock has a 52-week low of $8.72, a 52-week high of $15.22 and $1.70 billion in market capitalization.

Clearwire Corporation (CLWR) shares fell 1.26 percent to $2.36 in post-market trading. The shares lost over 5.53 percent in regular trading.