Polypore International , OSI Systems and Pathfinder Bancorp among 52-week lows

Polypore International Inc. (Nasdaq:PPO), OSI Systems Inc. (Nasdaq:OSIS) and Pathfinder Bancorp Inc. (Nasdaq:PBHC) are among the new 52-week lows in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Blackboard Inc. (Nasdaq:BBBB), Sauer Danfoss Inc. (Nasdaq:SHS), ENPRO Industries Inc. (Nasdaq:NPO), Cinemark Holdings Inc. (Nasdaq:CNK), Vocus Inc. (Nasdaq:VOCS) and Triple S Management Corp. (Nasdaq:GTS).

Here are the new 52-week lows among small caps:

		Price at 4:00 ET	Change	% Change	Volume	Year High	Year Low
PPO	POLYPORE INTL INC	7.10	-4.40	-38.3%	5,142.0k	29.26	9.97
OSIS	OSI SYSTEMS INC	11.33	-3.22	-22.1%	692.4k	27.47	13.66
PBHC	PATHFINDER BANCORP INC	6.00	-1.75	-22.6%	3.7k	16.55	6.89
BBBB	BLACKBOARD INC	22.40	-2.70	-10.8%	1,944.4k	49.90	24.82
SHS	SAUER-DANFOSS INC	10.50	-3.30	-23.9%	579.6k	37.93	11.39
NPO	ENPRO INDS INC	21.79	-2.99	-12.1%	564.2k	43.68	23.19
CNK	CINEMARK HOLDINGS INC	7.08	-0.24	-3.3%	745.7k	17.81	7.29
VOCS	VOCUS INC	16.41	-0.58	-3.4%	594.1k	41.50	16.88
GTS	TRIPLE-S MGMT CORP	10.28	-0.94	-8.4%	161.5k	22.25	10.50
PTSI	P A M TRANSN SVCS INC	8.35	-0.26	-3.0%	124.1k	17.15	8.51
MBR	MERCANTILE BANCORP INC ILL	14.25	-0.25	-1.7%	1.4k	18.90	14.50
PABK	PAB BANKSHARES INC	5.80	-0.18	-3.0%	1.0k	15.91	5.87
PSEM	PERICOM SEMICONDUCTOR CORP	7.27	-0.50	-6.4%	419.9k	19.50	7.33
SENEB	SENECA FOODS CORP NEW	16.81	-0.10	-0.6%	0.6k	27.82	16.91
SGB	SOUTHWEST GA FINL CORP	13.78	-0.09	-0.6%	0.6k	18.89	13.85
JCS	COMMUNICATIONS SYS INC	7.08	-0.88	-11.1%	8.9k	12.15	7.11
BTUI	BTU INTL INC	5.01	-0.51	-9.2%	32.7k	15.33	5.03
RICK	RICKS CABARET INTL INC	5.98	-0.04	-0.7%	180.6k	29.79	6.00
DFZ	BARRY R G CORP OHIO	5.25	-0.01	-0.2%	30.5k	9.00	5.26

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