Charts: SPIR PWAV SINO VG finviz.com/quote.ashx?t=SPIR SPIR stockcharts.com/c-sc/sc?s=SPIR&p=D&yr=0&mn=5&dy=0&i=p01568422023&a=254713884&r=9847 finviz.com/quote.ashx?t=PWAV PWAV stockcharts.com/c-sc/sc?s=PWAV&p=D&yr=0&mn=5&dy=0&i=p01568422023&a=254713884&r=9847 finviz.com/quote.ashx?t=SINO SINO stockcharts.com/c-sc/sc?s=SINO&p=D&yr=0&mn=5&dy=0&i=p01568422023&a=254713884&r=9847 finviz.com/quote.ashx?t=VG VG stockcharts.com/c-sc/sc?s=VG&p=D&yr=0&mn=5&dy=0&i=p01568422023&a=254713884&r=9847