To the maximum it can go till the bottom value of $350, not less, because the price of bitcoin started from the value around 350$ - 375$.
Now it quite stable above 400$, so now there is very minimal chance (or zero chances) that it move beneath 400$.
I believe this must be the right time for bitcoins to cross 450 and then hopefully 500$.
The bitcoin price is $452 now. It has risen quite a lot from the $350 range. Maybe it is on the up trend now.