Silver is down, too.
I would guess those holding gold/silver/bitcoin sold off to produce more liquidity for themselves or its a form of price manipulation.
If the two italian banks in bankruptcy held gold/silver/btc and sold off their holdings to payoff their debts, that might make sense.
So bitcoin is not the only one who is in down. And for sure that there's going to be another round for this correction. But this makes the market very good and balance, ups and downs making our trades good. This is really making those holders sell and do panic selling while the true believers will just keep on holding.