Amyris Inc. (AMRS) was among the biggest gainers on the Russell 2000 for Tuesday September 20 as the stock popped 7.89% to $0.51, representing a gain of $0.0375 per share. Some 7.79 million shares traded hands on 5,222 trades, compared with an average daily volume of 2.12 million shares out of a total float of 235.02 million. The stock opened at $0.48 and traded with an intraday range of $0.52 to $0.48.
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