One of the most popular types of stock to IT buy back is an "emergency" type, which is generally offered to the public during a period when the market is falling sharply. People need to get out of stocks as soon as possible. Usually, this means that you can get your money back if the stock goes down more than 20%. It’s a great way to get a quick windfall in a store that is undervalued, so if you’re looking for a good investment, it makes sense to look into purchasing one of these at this time.