The top after-market NASDAQ stock market gainers are: Clearwire, Patterson-UTI Energy, MicroStrategy, VIVUS and Zions Bancorp. The top after-market NASDAQ stock market losers are: II-VI, SciClone Pharmaceuticals, Harmonic, Columbia Laboratories and Extreme Networks.

Gainers

Clearwire Corp. (CLWR) stock gained 5.42 percent to $2.14 in after-market trading. The shares regained after it closed Monday's regular trading down 2.87 percent at $2.03.

Patterson-UTI Energy Inc. (PTEN) stock increased 4 percent to $19.2184 in after-market trading. The shares regained after it closed down 2.17 percent at $18.48 on Monday.

MicroStrategy Inc. (MSTR) stock gained 3.75 percent to $109.30 in after-market trading. The shares regained after it closed Monday's regular trading down 3.06 percent at $105.35.

VIVUS Inc. (VVUS) stock increased 3.17 percent to $10.10 in after-market trading. The shares regained after it closed down 2.97 percent at $9.79 on Monday.

Zions Bancorp. (ZION) stock rose 3.14 percent to $15.09 in after-market trading. The shares regained after it closed Monday's regular trading down 2.92 percent at $14.63.

Losers

II-VI Inc. (IIVI) stock slid 5.30 percent to $16.25 in after-market trading. The company provided an update on the impact of the Thailand flooding and revised guidance for the second quarter and the fiscal 2012. As originally announced in II-VI's Oct. 25 earnings release, Fabrinet, a company that manufactures certain products for the company, reported flood waters had infiltrated the manufacturing facilities at its Chokchai campus in Pathum Thani, Thailand. II-VI said it has completed its initial assessment of the damages and the impact from the Thailand flooding on its results of operations for the second quarter and the fiscal 2012 projected results. The company has implemented recovery plans for production that was impacted by the Thailand flooding.

For the second quarter, II-VI lowered its earnings guidance to range of $0.17 to $0.19 per share from previous forecast of $0.26 to $0.30 per share. The company also reduced its second quarter revenue outlook to $127 million to $129 million from previous range of $133 million to $138 million. Wall Street analysts predict profit of $0.25 per share on revenue of $127.88 million for the second quarter. For the fiscal 2012, the company cut its earnings guidance to range of $1.05 to $1.10 per share from previous estimate of $1.43 to $1.52 per share. The company also reduced its 2012 revenue outlook to range of $550 million to $560 million from previous forecast of $595 million to $615 million. Wall Street analysts predict profit of $1.22 per share on revenue of $556.86 million for the full year.

SciClone Pharmaceuticals, Inc. (SCLN) stock declined 4.33 percent to $4.42 in after-market trading.

Harmonic Inc. (HLIT) stock decreased 3.95 percent to $4.86 in after-market trading.

Columbia Laboratories Inc. (CBRX) stock declined 3.63 percent to $2.39 in after-market trading.

Extreme Networks Inc. (EXTR) stock decreased 3.56 percent to $2.71 in after-market trading.