Forget about the past. Would you buy this stock now? If so, ...

Forget about the past. Would you buy this stock now? If so, hold on to it. If you had the cash and would invest in something else with it, then sell and buy that other investment.
So many people have the sunk cost fallacy attitude of "don't sell since it's already so low" but you have to evaluate your investments based on the future, not the past. $Disney(DIS.US)$