A123 Systems, Inc. (NASDAQ:AONE) is up 19.25% in afternoon trading today at $1.92. AONE has traded 2.1 million shares so far today and trades 2.5 million shares a day on average. AONE bounced back today after it dipped last Friday from the mid $1.70s around $1.60. The company has a market cap of 245.85 million.

Openwave Systems Inc. (NASDAQ:OPWV) is up 12.66% today at $1.78. OPWV has traded 1.2 million shares so far today, more than double its daily average. The company has a market cap of 153.01 million.

Zoom Technologies, Inc. (NASDAQ:ZOOM) is up 12.14% today at $1.1550. ZOOM is up on light volume today with 167 thousand shares traded so far. The stock averages 318 thousand shares a day on average. The company has a market cap of 26.11 million.

MAKO Surgical Corp. (NASDAQ:MAKO) is up 11.82% in afternoon trading at $28.23. MAKO is up on heavy volume with 1.2 million shares so far today, more than double its daily average volume. MAKO stock is up today after analysts at Summer Street upgraded the stock to buy from neutral. The company has a market cap of 1.17 billion.

James River Coal Co. (NASDAQ:JRCC) is up 12.57% today at $7.79. JRCC has traded 2.3 million shares so far today, already higher than its daily average of 2.1 million shares. JRCC rose today thanks to a court’s delay of EPA pollution rule. The company has a market cap of 266.84 million.

Magal Security Systems Ltd. (NASDAQ:MAGS) is up 10.96% this afternoon at $4.15. MAGS is up on large volume with 568 thousand shares traded so far. On average, MAGS trades 89 thousand shares a day. The company has a market cap of 66.06 million.

Live Nation Entertainment, Inc. (NYSE:LYV) is up 11.31% today at $9.25. LYV has traded 1.7 million shares so far today, well above its daily average 1.2 million shares. The company has a market cap of 1.72 billion.