pSivida Corp. (NASDAQ:PSDV) is down 18.70% today at $2.03. PSDV has traded 339 thousand shares so far today, well above its daily average of 102 thousand shares a day. PSDV shares are seeing a pull back today after the stock jumped more than $0.80 earlier this week. The company has a market cap of 42.64 million.
A123 Systems, Inc. (NASDAQ:AONE) is down 13.57% in midday trading at $1.21. AONE has traded 6.7 million shares so far today, more than double its daily average. AONE shares continue to fall after news that it will spend $55 million due to battery recall. The company has a market cap of 176.23 million.
Alimera Sciences, Inc. (NASDAQ:ALIM) is down 12.88% today at $3.3888. ALIM has traded 623 thousand shares so far today, well above its daily average of 344 thousand shares. ALIM shares were trading as low as $3.16 earlier this morning, but have bounced back some. The company has a market cap of 107.15 million.
Arena Pharmaceuticals, Inc. (NASDAQ:ARNA) is down 11.66% in midday trading at $2.88. ARNA has traded 17.7 million shares so far today, well above its daily average of 6.5 million shares a day on average. Arena Pharmaceuticals was downgraded to neutral from overweight at Piper Jaffray. The company has a market cap of 521.42 million.
Swisher Hygiene, Inc. (NASDAQ:SWSH) is down 8.85% today at $2.78. SWSH has traded over 2 million shares today, 5 times its daily average. Swisher Hygiene delayed today it will delay its annual report. SWSH shares are down nearly $0.40 a share in the past two days. The company has a market cap of 485.39 million.
Clean Energy Fuels Corp. (NASDAQ:CLNE) is down 8.13% in midday trading at $21.18. CLNE has traded 3.3 million shares so far today, well above its daily average of 2 million shares. The company has a market cap of 1.82 billion.
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