On the upside
Rising silver prices lifted shares of Silvercorp Metals (NYSE: SVM).
BPZ Energy (NYSE: BPZ) sold a 49% stake in Block Z-1 to Pacific Rubiales Energy.
On the downside
The Wall Street Journal named RadioShack (NYSE: RSH) as one of four retailers on its 2012 do-or-die list. Zacks affirmed its Neutral rating on Quicksilver Resources (NYSE: KWK).
Zacks rated 3D Systems (NYSE: DDD) a Strong Buy but the stock price tumbled.
In the broad market, declining issues outpaced advancers by a margin of more than 3 to 1 on the NYSE and by more than 5 to 2 on Nasdaq. The broader S&P 500 index dropped 17 points to 1402.