Dendreon and Weight Watchers Among Top Stock Price Percentage Winners Today

The U.S. financial markets wobbled at the open this morning, but that rallied steadily the remainder of the trading day. Here are the stocks that moved the most in market action:

Big gainers:

Dendreon Corporation (NASDAQ:DNDN): Dendron closed at $10.62, up $3.02, or 39.74 percent. With a 52-week range of $6.46 to $43.96, Dendreon has lost most of its gains after selling a royalty interest in Victrelis for $125 million. The sale looks like Dendron is raising cash to offset slower than expected sales in its prostrate treatment, Provenge.

Ancestry.com Inc (NASDAQ:ACOM): Ancestry.com  closed at $27.47, up $4.6, or 20.11 percent. After a 52-week trading range of $20.67 to $45.79. Ancestry.com rises 17.4 percent after reporting subscribers increased 22 percent in 2011 to 1.7 million.  A spokesman said fourth quarter churn fell from 3.9 percent to 3.8 percent, and predicted mid-to-high teens for 2012 revenue.

Weight Watchers International, Inc. (NYSE:WTW): Weight Watchers closed at $62.52, up $4.83, or 8.37 percent. Their 52-week trading range has been $36.75 to $86.97. Weight Watchers is attractive to a variety of employers and health insurers trying to improve employee health a cut costs for health care.  That could put WTW on several “Best of 2012” stock lists. Charles Boorady, Credit Suisse analyst, fed the hype saying, “I think the potential is enormous. It cost 50 percent more to cover health-care costs for someone who is obese versus someone at normal weight. It’s a big focus of employers and insurers. We think Weight Watchers has a unique franchise to address that opportunity.”

Plexus Corp. (NASDAQ:PLXS): Plexus closed at $30.29, up $2.7, or 9.79 percent. Their 52-week trading range has been $21.06 to $38.71. Plexus focused guidance from $0.44-0.49  to $0.48-0.50, above the $0.47 consensus and revenue from $510-540 million to $525-530 million staying near consensus of $527.7 million. Plexus announced an agreement with Kontron AG (KOTRF.PK) that should be favorable to earnings-per-share.

USG Corporation (NYSE:USG): USG Corporation closed at $11.39, up $0.69, or 6.45 percent. Their 52-week trading range has been $5.75 to $19.91.

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To contact the reporter on this story: Jim Wilkerson at staff.writers@wallstcheatsheet.com

To contact the editor responsible for this story: Damien Hoffman at editors@wallstcheatsheet.com