$3 billion hedge fund company starts investing in Bitcoin via OKCoin.
Their CEO had made it clear that there was not such thing of $3 billion hedge fund investing in Bitcoin via OKCoin, so i think this is not the reason.
perhaps more and more ppl believe in BTC.
Regardless of whether it is or isn't true it obviously doesn't matter so long as people believe the hype real or not which obviously can effect the price.