I don't know how long I have to wait but one thing that I know, if the price increase for more than $20, then I think I can sell it to get the $20 of profit and I can wait for another down of the price. I know this will be difficult since the price can go lower but I am sure that after the price reaches the lower, the price will bounce up again and if the price can pass more than $20, it means, I can take the profit and get out from the market for a while.