Ballard Power Sys (TSX: BLDP )

Historical Prices

Date	Open	High	Low	Close	Volume	Change (%)
May 31, 2012	1.190	1.220	1.180	1.200	14,760	+0.02(+1.69%)
May 30, 2012	1.210	1.210	1.170	1.180	12,300	-0.01(-0.84%)
May 29, 2012	1.170	1.200	1.170	1.190	1,407	+0.00(+0.00%)
May 28, 2012	1.190	1.190	1.170	1.190	2,533	+0.01(+0.85%)
May 25, 2012	1.160	1.200	1.160	1.180	9,101	+0.00(+0.00%)
May 24, 2012	1.160	1.190	1.160	1.180	8,101	+0.02(+1.72%)
May 23, 2012	1.150	1.210	1.150	1.160	31,180	-0.01(-0.85%)
May 22, 2012	1.130	1.200	1.130	1.170	128,828	-0.05(-4.10%)
May 18, 2012		1.220	1.220	1.220	0	-0.02(-1.61%)
May 17, 2012	1.220	1.300	1.220	1.240	33,559	-0.01(-0.80%)
May 16, 2012	1.280	1.280	1.250	1.250	22,217	-0.03(-2.34%)
May 15, 2012	1.330	1.350	1.280	1.280	38,789	-0.08(-5.88%)
May 14, 2012	1.280	1.360	1.280	1.360	6,991	+0.00(+0.00%)
May 11, 2012	1.300	1.360	1.270	1.360	13,225	+0.03(+2.26%)
May 10, 2012	1.300	1.340	1.300	1.330	10,988	+0.02(+1.53%)
May 09, 2012	1.280	1.330	1.250	1.310	67,750	+0.03(+2.34%)
May 08, 2012	1.290	1.300	1.280	1.280	13,024	-0.02(-1.54%)
May 07, 2012	1.290	1.320	1.290	1.300	8,760	-0.02(-1.52%)
May 04, 2012	1.280	1.320	1.280	1.320	8,750	+0.02(+1.54%)
May 03, 2012	1.310	1.320	1.280	1.300	14,561	+0.00(+0.00%)
May 02, 2012	1.390	1.390	1.300	1.300	55,560	-0.09(-6.47%)