Let's say that you are certain that the price of a stock is going up in the near future. You don't know how much it will go up, only that it most certainly is not going to decline. Of course, this is not necessarily a realistic situation, but let's say you are 100% sure that the stock won't decline and want to bet money on it. What instruments would you use to get the highest profit assuming that your view is correct? Assume that you cannot borrow money to leverage such a risky investment depending only on the outcome of one stock.