Pre-market Movers For Aug 13 (JCP, SINA, DGIT, MCOX, ARTX, OWW)

(RTTNews) - Gainers:

J. C. Penney Company, Inc. (JCP) is up 1 percent to $13.34 based on the news about the resignation of Pershing Square Capital Management's William Ackman from its board, effective Aug. 12, 2013.

SINA Corp. (SINA) is gaining 6 percent to $85.60. The company's second quarter earnings and net revenues were above Wall Street view. The company also forecast third quarter net revenues above the consensus estimate

Digital Generation, Inc. (DGIT) is surging 39 percent to $14.35 following the news that it has agreed to sell its television ad delivery business to Extreme Reach Inc. for $485 million. The transaction is expected to be accomplished in two contemporaneous steps: DGIT will distribute its online business to DGIT shareholders in the form of a new publicly-traded company, and Extreme Reach will acquire the remaining DGIT business pursuant to a cash merger.

Mecox Lane Limited (MCOX) is up 11 percent to $7.90. The company is slated to release its quarter results after the close of trading.

Arotech Corporation (ARTX) is rising 25 percent to $2.25 following the release of its quarterly results.

Decliners:

Orbitz Worldwide, Inc. (OWW) is falling 12 percent to $10.29. PAR Capital Management has sold 8.1 million of its 24.6 million shares of Orbitz Worldwide stock. PAR has been an equity investor in Orbitz since 2007.