UAL, Solarfun Power Holdings and Union Drilling lead small-cap volume in pre-market

UAL Corp. (Nasdaq:UAUA), Solarfun Power Holdings Co Ltd. (Nasdaq:SOLF) and Union Drilling Inc. (Nasdaq:UDRL) are among the most actively traded companies in Friday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Canadian Solar Inc. (Nasdaq:CSIQ), A Power Energy Generation Systems Ltd. (Nasdaq:APWR), MAP Pharmaceuticals Inc. (Nasdaq:MAPP), Century Aluminum Co. (Nasdaq:CENX), AgFeed Industries Inc. (Nasdaq:FEED) and Eagle Bulk Shipping Inc. (Nasdaq:EGLE).

Here are the most actively traded companies among small caps:

		Price at 9:08 ET	Change	% Change	Volume	Year High	Year Low
UAUA	UAL CORP	5.00	-0.12	-2.3%	9.7k	16.73	2.80
SOLF	SOLARFUN POWER HOLDINGS CO L	8.00	+0.27	+3.5%	6.7k	23.24	2.27
UDRL	UNION DRILLING INC	8.60	-0.59	-6.4%	3.8k	22.73	2.51
CSIQ	CANADIAN SOLAR INC	15.80	+0.15	+1.0%	3.7k	51.80	3.00
APWR	A POWER ENERGY GENERAT SYS L	13.73	+0.25	+1.9%	3.2k	31.89	3.00
MAPP	MAP PHARMACEUTICALS INC	11.33	+0.15	+1.3%	3.0k	13.85	1.57
CENX	CENTURY ALUM CO	6.25	+0.07	+1.1%	2.9k	75.21	1.04
FEED	AGFEED INDUSTRIES INC	7.60	+0.01	+0.1%	2.4k	16.07	0.90
EGLE	EAGLE BULK SHIPPING INC	6.60	+0.09	+1.4%	1.8k	33.98	2.55
OGXI	ONCOGENEX PHARMACEUTICALS IN	25.00	-0.02	-0.1%	1.6k	25.70	2.00

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