A Bull is a stock market speculator who buys a holding in a stock in the expectation that in the very short-term it will rise in value whereupon he will sell the stock to make a quick profit on the transaction. Strictly speaking the term applies to speculators who borrow money to fund such a purchase, and are thus under great pressure to complete the transaction before the loan is repayable or the seller of the stock demands payment on settlement day for delivery of the bargain. If the value of the stock falls contrary to his expectation, a bull suffers a loss, frequently very large if he is trading on margin. A bull has a great incentive to "talk-up" the value of his stock or to manipulate the market in his stock, for example by spreading false rumour, to procure a buyer or to cause a tem