There are several stocks trading more heavily than usual this morning, and also experiencing large gains or drops in share prices. These include Orchard Supply Hardware Stores Corp. (NASDAQ: OSH), Rambus Inc. (NASDAQ: RMBS), Yingli Green Energy Holding Co. Ltd. (NYSE: YGE), Aveo Pharmaceuticals Inc. (NASDAQ: AVEO)_, and James River Coal Co. (NASDAQ: JRCC).

After the first half hour of trading this morning, Orchard Supply is up 56% at $39.00. The home improvement store, formerly part of Sears Holdings Corp. (NASDAQ: SHLD), held its IPO this morning at $25/share. Trading has been light, with less than 5,000 shares trading hands following the initial offering.

Rambus is up more than 10% at $8.32. Volume is heavy, with about 25% of the daily average already having been traded. The semiconductor intellectual property company has raised its revenue guidance from $66-$71 million to $83 million for the quarter ended in December.

Yingli Green Energy is up nearly 10% at $4.17. Volume is fairly heavy, with about 20% of the daily average already traded. The solar PV maker is getting a bounce from news stories projecting a better quarter for solar makers.

Aveo is down nearly -14% at $14.84. Volume is already 4x the daily average. The pharmaceutical maker reported that its liver cancer drug performed better than a competitor in late-stage trials, but investors were expecting a larger improvement.

James River is up more than 9% at $7.56. Volume is heavy, with 35% of the daily average already having been traded. The coal miner has been undervalued according to some analysts, who expect coal miners to perform well in 2012 compared with alternative energy sources.

Paul Ausick

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