Teekay Tankers Ltd. (Nasdaq:TNK), A Power Energy Generation Systems Ltd. (Nasdaq:APWR) and BNC Bancorp (Nasdaq:BNCN) are among the biggest percentage losers in Friday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Chindex International Inc. (Nasdaq:CHDX), Alyst Acquisition Corp. (Nasdaq:AYA), Citi Trends Inc. (Nasdaq:CTRN), Valhi Inc. (Nasdaq:VHI), Matrixx Initiatives (Nasdaq:MTXX) and Pzena Investment Management Inc. (Nasdaq:PZN).

Here are the biggest percentage losers among small caps:

		Price at 9:08 ET	Change	% Change	Volume	Year High	Year Low
TNK	TEEKAY TANKERS LTD	9.07	-1.54	-14.5%	3,751.5k	25.01	4.82
APWR	A POWER ENERGY GENERAT SYS L	8.49	-1.18	-12.2%	4,580.5k	31.89	3.00
BNCN	BNC BANCORP	7.08	-0.82	-10.4%	7.5k	12.42	3.96
CHDX	CHINDEX INTERNATIONAL INC	11.71	-1.34	-10.3%	291.0k	18.81	3.50
AYA	ALYST ACQUISTION CORP	6.85	-0.69	-9.2%	24.7k	8.80	7.00
CTRN	CITI TRENDS INC	22.98	-2.14	-8.5%	325.0k	27.64	7.01
VHI	VALHI INC NEW	8.02	-0.72	-8.2%	41.7k	30.24	6.65
MTXX	MATRIXX INITIATIVES INC	5.55	-0.46	-7.7%	1,631.7k	19.74	5.48
PZN	PZENA INVESTMENT MGMT INC	7.41	-0.58	-7.3%	83.0k	15.00	1.50
CBKN	CAPITAL BK CORP	5.59	-0.42	-7.0%	3.7k	12.10	4.00