CPI International Inc. (Nasdaq:CPII), Janus Capital Group Inc. (Nasdaq:JNS) and Gulf Island Fabrication Inc. (Nasdaq:GIFI) are among the biggest percentage losers in Monday's trading among companies with market capitalizations under $1 billion.

Also included among the results: BancTrust Financial Group Inc. (Nasdaq:BTFG), Willbros Group Inc. (Nasdaq:WG), Textainer Group Holdings Ltd (Nasdaq:TGH), James River Coal Co. (Nasdaq:JRCC), Walter Industries Inc. (Nasdaq:WLT) and 1st Source Corp. (Nasdaq:SRCE).

Here are the biggest percentage losers among small caps:

		Price at 12:22 ET	Change	% Change	Volume	Year High	Year Low
CPII	CPI INTERNATIONAL INC	6.19	-3.15	-33.7%	25.3k	18.64	5.07
JNS	JANUS CAP GROUP INC	6.01	-2.14	-26.3%	1,870.5k	36.88	5.18
GIFI	GULF ISLAND FABRICATION INC	10.84	-3.57	-24.8%	217.7k	52.59	10.05
BTFG	BANCTRUST FINANCIAL GP	9.40	-3.08	-24.7%	15.0k	16.85	5.71
WG	WILLBROS GROUP INC	6.28	-1.99	-24.1%	674.0k	47.93	5.38
TGH	TEXTAINER GROUP HOLDINGS LTD	7.81	-2.32	-22.9%	71.2k	22.97	6.27
JRCC	JAMES RIVER COAL CO	8.82	-2.54	-22.4%	1,208.3k	62.83	5.05
WLT	WALTER INDS INC	14.30	-3.94	-21.6%	1,148.4k	111.99	12.10
SRCE	1ST SOURCE CORP	17.56	-4.65	-20.9%	91.8k	30.00	14.54
WLB	WESTMORELAND COAL CO	7.50	-1.98	-20.9%	28.3k	24.50	5.30