Bought in at $11.00 sold half at $38.00
Did you sell any on the way up?
I didn't invest anything in this, but in general, the hardest thing for me is to hold on after seeing significant (especially if they're relatively fast) gains. This is especially true in Tax-Qualified accounts where I am not thinking tax consequences. In a taxable account holding off for Long-Term vs Short-Term gains is taken into account.