Thursday's Winners and Losers: Regeneron

TiVo(TIVO Quote) soared 24.8%, a day after the digital video recorders maker reported narrower-than-expected loss in the third quarter and guided in line with analysts' expectations for the current quarter. TiVo lost $8.2 million, or 8 cents a share, in the quarter compared with a loss of $11.1 million, or 12 cents a share a year ago. Analysts were expecting a loss of 13 cents a share. Revenue rose to $58.3 million, higher than Street expectations of $56.7 million.

TiVo also received an upgrade Thursday from JPMorgan, which now rates the stock overweight from underweight. TiVo also said Thursday it has won a decision in its favor from the U.S. Patent and Trademark Office in a dispute against EchoStar(DISH Quote). Shares of TiVo were up $1.48 to $7.46.

Also on the rise was Regeneron(REGN Quote), shares of which garnered $4.86, or 28.3%, to $21.80 on news that it strengthened its ties with Sanofi-Aventis(SNY Quote). Sanofi now holds a 19% stake in the company, up from a prior 4% stake. The team's new collaboration will use Regeneron technology to discover and develop fully humanized antibody drugs.

Chinese gaming company Shanda Interactive(SNDA Quote) gave up some of the gains from its third-quarter earnings report on Tuesday. Shanda had announced earnings of 44 cents a share on revenue of $87.4 million, compared to analysts' expectations of 43 cents a share on revenue of $82 million. The stock fell $2.11, or 5.4%, to $36.89 Thursday.