If I have 21 btc, I would sell it now without thinking again now the price of bitcoin rise sharply.
nah dude if you are going to sell your bitcoin the price of bitcoin will going down because you sell your bitcoin the difference between sell and order is not the same , which is if you are going to order or buy bitcoin the price of the bitcoin are going up! and if you are going to sell the price of bitcoin will increase so that wee need more investors to choose bitcoin so that theres a chance that bitcoin price will increase.