UAL, Canadian Solar and A Power Energy Generation Systems lead small-cap volume in pre-market

UAL Corp. (Nasdaq:UAUA), Canadian Solar Inc. (Nasdaq:CSIQ) and A Power Energy Generation Systems Ltd. (Nasdaq:APWR) are among the most actively traded companies in Wednesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: American Superconductor Corp. (Nasdaq:AMSC), Willis Lease Finance Corp. (Nasdaq:WLFC), Solarfun Power Holdings Co Ltd (Nasdaq:SOLF), Epicor Software Corp. (Nasdaq:EPIC), Bank of the Ozarks Inc. (Nasdaq:OZRK) and Ceradyne Inc. (Nasdaq:CRDN).

Here are the most actively traded companies among small caps:

		Price at 9:06 ET	Change	% Change	Volume	Year High	Year Low
UAUA	UAL CORP	7.15	+0.02	+0.3%	23.6k	51.60	2.80
CSIQ	CANADIAN SOLAR INC	12.00	-0.58	-4.6%	9.3k	51.80	8.67
APWR	A POWER ENERGY GENERAT SYS L	6.40	-0.19	-2.9%	9.2k	31.89	3.97
AMSC	AMERICAN SUPERCONDUCTOR CORP	15.70	+0.71	+4.7%	3.5k	47.53	11.06
WLFC	WILLIS LEASE FINANCE CORP	12.19	+0.00	+0.0%	3.3k	16.50	8.45
SOLF	SOLARFUN POWER HOLDINGS CO L	6.66	-0.63	-8.6%	2.8k	40.19	4.67
EPIC	EPICOR SOFTWARE CORP	8.86	+2.06	+30.3%	2.5k	13.52	5.69
OZRK	BANK OF THE OZARKS INC	26.29	+0.00	+0.0%	2.1k	36.80	13.81
CRDN	CERADYNE INC	28.40	-1.81	-6.0%	2.1k	77.00	25.01
VLTR	VOLTERRA SEMICONDUCTOR CORP	9.34	-0.12	-1.3%	2.0k	17.77	7.79

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