There's a practice in the stock market called short selling.
Normal short selling is about to become easier to do.
One might ask why short selling is not immediately reflected in the price of a stock.
We also need regulations on short selling, because this played a role in the financial crisis.
Short selling helps bring prices down to their appropriate level more quickly.
But many will be pleased that short selling may become more expensive.
Many brokers do not offer short selling to small private investors.
Short selling was not the only way to bet against Palm.
But this time the company will have encouraged the short selling to make its earnings look better.
Short selling is usually a bet that the stock will decline.