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Where can I buy preferred stocks as opposed to common stocks?
Preferred stock is traded on the market, so you can just buy it like any other. The symbol for a preferred stock is the ticker symbol followed by a dash and a letter for each class of preferred stock. Examples: Generally speaking, you should buy Preferred stock with the intention of holding onto it for at least a  couple of years. Often preferred shares are lightly traded and have wide spreads that made it difficult to make money in the short term.