Stockwatch and yahoo both agree with stockcharts, that mng opened at usd.81 .... i don't see anywhere posted an open of down 50%? ... that would be a print of usd.45 or something .... yes that's quite a chart on Bema, triangle pattern, haven't looked yet but judging from overall shape on the gallery page it's a reasonable guess that the bollinger bands are tightening - http://stockcharts.com/gallery?bgo