JA Solar Holdings, Delta Petroleum and DryShips lead small-cap volume in pre-market

JA Solar Holdings Co Ltd. (Nasdaq:JASO), Delta Petroleum Corp. (Nasdaq:DPTR) and DryShips Inc. (Nasdaq:DRYS) are among the most actively traded companies in Tuesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Solarfun Power Holdings Co Ltd. (Nasdaq:SOLF), United Natural Foods Inc. (Nasdaq:UNFI), Canadian Solar Inc. (Nasdaq:CSIQ), Clean Energy Fuels Corp. (Nasdaq:CLNE), A Power Energy Generation Systems Ltd. (Nasdaq:APWR) and Osiris Therapeutics Inc. (Nasdaq:OSIR).

Here are the most actively traded companies among small caps:

		Price at 9:06 ET	Change	% Change	Volume	Year High	Year Low
JASO	JA SOLAR HOLDINGS CO LTD	6.08	+0.43	+7.6%	334.4k	27.00	3.37
DPTR	DELTA PETE CORP	9.06	+0.00	+0.0%	233.2k	28.37	6.56
DRYS	DRYSHIPS INC	22.70	+0.76	+3.5%	116.6k	119.99	12.25
SOLF	SOLARFUN POWER HOLDINGS CO L	9.06	+0.82	+10.0%	105.3k	40.19	4.20
UNFI	UNITED NAT FOODS INC	21.72	+0.00	+0.0%	83.3k	31.87	15.60
CSIQ	CANADIAN SOLAR INC	11.55	+0.65	+6.0%	71.1k	51.80	7.20
CLNE	CLEAN ENERGY FUELS CORP	8.60	+0.38	+4.6%	12.8k	19.95	6.62
APWR	A POWER ENERGY GENERAT SYS L	6.28	+0.27	+4.5%	12.1k	31.89	3.97
OSIR	OSIRIS THERAPEUTICS INC	18.00	+2.50	+16.1%	5.7k	20.20	9.98
RCRC	RC2 CORP	12.15	+0.12	+1.0%	5.2k	31.21	10.00

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