It depends. If that price would be an effect of a sudden pump/bubble like in Nov 2013 I would sell 50% of my savings. If it'd be an result of steady growth I'd hold.
either it would be a steady growth or not i would hold. i believe that bitcoin can reach much more than 1000 dollars what already previously happened. to sell at least 50 percent of my funds it would have to grow to at least 2k dollars