Just remember kids: sharp bounces don't necessarily mean a true reversal.
Just look at what happened in April - a sharp bounce from bottom off 339 all the way to 554 on about 4X the volume of this recent bounce. Everybody cheered "Hooray! Look at that volume! Downtrend is over, bottom is in, only up from here!" Then look what happened over the next 2 weeks after the rally... slow fall from 554 down to 420's. Where it stayed for a month.
So yeah. I predict that within 10 days (by 9/1) you'll have your answer whether this rally was sustainable or not.
Just look at what happened in April - a sharp bounce from bottom off 339 all the way to 554 on about 4X the volume of this recent bounce. Everybody cheered "Hooray! Look at that volume! Downtrend is over, bottom is in, only up from here!" Then look what happened over the next 2 weeks after the rally... slow fall from 554 down to 420's. Where it stayed for a month.
So yeah. I predict that within 10 days (by 9/1) you'll have your answer whether this rally was sustainable or not.
who cares? up! ccmf!
Only people that care are existing long term bulls looking to buy more, and not fall for any traps.

(But I'll always be ready for CCMF!!!)