Bull. A speculator who works to secure or who believes in higher prices; one who buys stocks,
grain, cotton or any other speculative commodity in the expectation of selling it at a higher price.  
A speculator may be a bull ostensibly but not in fact. For instance, he may desire to acquire a
short interest in a stock, but to do so to advantage he first advances the price by wash orders
(see Washing) or other devices. He actually sells the stock short at the high price and if the stock
then declines below the original price the speculator increases his profit to the extent of the
advance effected by him preliminary to the making of his actual sales.