Investors love to back a winner — except for short-sellers. These contrarian traders prefer betting stocks will fall, and the further the better.Many investors don’t like short-sellers because they are looking for a stock to fail. Yet, it’s a normal part of the market. Stocks rise and fall, and profiting from a stock’s decline isn’t bad. The short-sellers aren’t causing the stock to fall, the business is.How short-selling works is an investor borrows a company’s shares and sells them. Sometime later, he buy ...