The companies whose shares are moving in pre-market trade on Friday are: JDS Uniphase, Aetna, PulteGroup, Symantec, Tesoro, Las Vegas Sands, Fiserv and Wynn Resorts.

JDS Uniphase Corp. (NASDAQ:JDSU) shares surged 18.57 percent to $21.26 in pre-market trading session on Friday as the company swung to second-quarter net income of $23.6 million or $0.10 per share, compared with a loss of $19.5 million or $0.09 per share in the same quarter a year-ago. Revenue rose to $473.5 million from $342.9 million last year.

Aetna Inc. (NYSE:AET) shares climbed 9.71 percent to $36.50 in pre-market trading as its fourth quarter net income increased to $215.6 million or $0.53 per share from $165.9 million or $0.38 per share in the same period a year-ago. The company also expects 2011 earnings per share of $3.70 to $3.80 against analysts’ estimation of $3.27 per share.

PulteGroup Inc. (NYSE:PHM) shares gained 4.77 percent to $7.90 in pre-market trading session as its loss before income taxes shrank to $190.5 million from a loss of $917.2 million last year. The home builder also said the U.S. housing market is showing signs of stability.

Symantec Corp. (NASDAQ:SYMC) shares gained 3.06 percent to $18.50 in pre-market trading session. The stock has a 52 week low of $12.04 and 52 week high of $18.79 and has $13.93 billion market capitalization.

Tesoro Corp. (NYSE:TSO) shares gained 1.84 percent to$20.50 in pre-market trading session. The company stock was upgraded to “outperform” from “neutral” rating at Credit Suisse.

Las Vegas Sands Corp. (NYSE:LVS) shares declined 5.53 percent to $47.50 in pre-market trading session as its fourth-quarter sales missed analyst estimates.

Fiserv Inc. (NASDAQ:FISV) shares declined 3.71 percent to $60.00 in pre-market trading session after the company said its fiscal 2011 profit may be as low as $4.42 a share against analysts’ estimation of $4.47 per share.

Wynn Resorts Ltd. (NASDAQ:WYNN) shares declined 1.38 percent to$117.75 in pre-market trading session.

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