Looks like people are buying btc to take advantage of the free btcc that will be added to accounts August 1st. If this is correct, then there will be a fire sale on btcc once everyone starts dumping. But will they buy more btc with it or storm back into cheap alts?
Pick the winners and you will make off like a bandit, but remember, this stuff usually only makes sense in hindsight.
This is a great graphic i have borrowed from 
I found it really helped to see the market shares now that btc was back over 50%. Good Luck!
Cheers! from 