5000 wont happen easily now we're printed some much volume about 6000.    Maybe Mt. gox liquidated coins are being sold off or some other reason that leads to weakness, we'd find that out afterwards I guess but right now its not especially apparent.


There is no 50% Fibonacci level if we were being strict about it and of course we arent, all we are trying to do is guess where others place significance in any move forward and sort the amount of momentum and true direction from speculative activity.
  50% is just invented by people as a place to take some profits, in a natural order its not got any greater power to it presuming Fibonacci itself does.

https://www.investopedia.com/ask/answers/05/fibonacciretracement.asp

I'd normally take the 38 and 61% levels are good confidence levels that the move will complete, if we cant even stay above 38% then its quite weak.