O S I Systems Inc (NQ: OSIS )

Historical Prices

Date	Open	High	Low	Close	Volume	Change (%)
May 28, 2010	26.57	26.71	25.95	26.21	2,271,618	-0.36(-1.35%)
May 27, 2010	26.44	26.66	26.04	26.57	190,213	+0.56(+2.15%)
May 26, 2010	25.88	26.53	25.81	26.01	340,965	+0.16(+0.62%)
May 25, 2010	25.32	25.90	25.00	25.85	535,381	+1.28(+5.21%)
May 24, 2010	24.60	25.06	24.27	24.57	176,125	-0.05(-0.20%)
May 21, 2010	23.28	24.87	23.15	24.62	327,823	+0.93(+3.93%)
May 20, 2010	23.52	23.98	22.80	23.69	355,769	-0.26(-1.09%)
May 19, 2010	24.25	24.39	23.62	23.95	142,213	-0.42(-1.72%)
May 18, 2010	25.27	25.27	24.20	24.37	94,962	-0.65(-2.60%)
May 17, 2010	25.08	25.69	24.10	25.02	121,137	-0.04(-0.16%)
May 14, 2010	25.32	25.48	24.63	25.06	147,752	-0.45(-1.76%)
May 13, 2010	25.80	26.00	25.51	25.51	131,788	-0.26(-1.01%)
May 12, 2010	25.60	26.02	25.53	25.77	148,464	+0.14(+0.55%)
May 11, 2010	25.21	25.81	24.31	25.63	241,297	+1.09(+4.44%)
May 10, 2010	24.46	24.87	24.09	24.54	116,787	+0.62(+2.59%)
May 07, 2010	24.39	24.96	23.83	23.92	222,539	-0.60(-2.45%)
May 06, 2010	24.52	25.00	23.57	24.52	287,479	-0.14(-0.57%)
May 05, 2010	24.85	25.02	24.35	24.66	255,374	-0.60(-2.38%)
May 04, 2010	26.21	26.43	25.00	25.26	259,912	-1.15(-4.35%)
May 03, 2010	26.02	26.61	25.78	26.41	210,260	+0.37(+1.42%)
Apr 30, 2010	27.20	27.20	26.03	26.04	211,650	-1.16(-4.26%)
Apr 29, 2010	26.65	27.45	26.62	27.20	289,019	+0.75(+2.84%)
Apr 28, 2010	26.40	26.49	25.64	26.45	420,408	+0.05(+0.19%)
Apr 27, 2010	26.35	26.93	25.93	26.40	656,942	+0.05(+0.19%)
Apr 26, 2010	28.70	28.90	26.35	26.35	1,281,295	-3.62(-12.08%)
Apr 23, 2010	29.43	29.99	28.79	29.97	184,749	+0.54(+1.83%)
Apr 22, 2010	28.84	29.60	28.43	29.43	351,510	+0.47(+1.62%)
Apr 21, 2010	29.27	29.47	28.90	28.96	87,013	-0.18(-0.62%)
Apr 20, 2010	28.78	29.18	28.69	29.14	113,303	+0.52(+1.82%)
Apr 19, 2010	28.77	28.90	28.21	28.62	93,708	-0.32(-1.11%)
Apr 16, 2010	28.85	28.99	28.26	28.94	163,735	+0.13(+0.45%)
Apr 15, 2010	29.22	29.43	28.79	28.81	131,368	-0.57(-1.94%)
Apr 14, 2010	28.78	29.84	28.76	29.38	196,811	+0.83(+2.91%)
Apr 13, 2010	28.50	28.82	28.36	28.55	89,955	+0.10(+0.35%)
Apr 12, 2010	28.35	28.57	28.06	28.45	102,214	+0.11(+0.37%)
Apr 09, 2010	28.19	28.59	27.94	28.34	105,520	+0.06(+0.23%)
Apr 08, 2010	28.24	28.50	27.89	28.28	106,734	-0.10(-0.35%)
Apr 07, 2010	28.37	28.72	28.01	28.38	131,196	-0.15(-0.53%)
Apr 06, 2010	28.77	28.91	28.29	28.53	92,912	-0.18(-0.63%)
Apr 05, 2010	28.11	28.73	28.00	28.71	112,136	+0.39(+1.38%)
Apr 01, 2010	28.09	28.32	28.32	28.32	97,800	+0.24(+0.85%)
Mar 31, 2010	28.49	28.69	28.03	28.08	100,864	-0.38(-1.34%)
Mar 30, 2010	28.14	28.80	28.00	28.46	181,514	+0.27(+0.96%)
Mar 29, 2010	29.03	29.23	27.91	28.19	427,035	-0.97(-3.33%)
Mar 26, 2010	29.95	30.13	29.05	29.16	253,945	-0.80(-2.67%)
Mar 25, 2010	30.10	30.61	29.91	29.96	96,403	-0.10(-0.33%)
Mar 24, 2010	30.45	30.66	30.00	30.06	140,662	-0.65(-2.12%)
Mar 23, 2010	30.12	31.02	30.11	30.71	153,752	+0.55(+1.82%)
Mar 22, 2010	29.67	30.45	29.30	30.16	165,437	+0.21(+0.70%)
Mar 19, 2010	30.87	30.99	29.60	29.95	362,896	-1.03(-3.32%)
Mar 18, 2010	30.40	31.20	30.40	30.98	175,808	+0.45(+1.47%)
Mar 17, 2010	30.70	30.91	30.42	30.53	199,307	-0.01(-0.03%)
Mar 16, 2010	30.41	30.57	30.30	30.54	63,856	+0.31(+1.03%)
Mar 15, 2010	30.21	30.80	30.14	30.23	126,801	-0.34(-1.11%)
Mar 12, 2010	31.20	31.20	30.31	30.57	189,069	-0.75(-2.39%)
Mar 11, 2010	31.50	31.64	31.13	31.32	101,710	-0.22(-0.70%)
Mar 10, 2010	31.25	31.69	31.00	31.54	136,101	+0.08(+0.25%)
Mar 09, 2010	31.10	31.75	30.81	31.46	222,601	+0.38(+1.22%)
Mar 08, 2010	30.67	31.31	30.60	31.08	213,700	+0.52(+1.70%)
Mar 05, 2010	30.29	30.98	30.29	30.56	279,234	+0.28(+0.92%)
Mar 04, 2010	30.22	30.50	29.96	30.28	143,257	-0.01(-0.03%)
Mar 03, 2010	30.34	30.78	29.95	30.29	320,061	-0.09(-0.30%)
Mar 02, 2010	31.00	31.07	30.11	30.38	436,640	-0.50(-1.62%)