Capital markets, including equity markets, are much like other markets, save perhaps for two characteristics: their speed and their regulation. They react all but instantaneously to changes in supply and demand, which is one reason why they can be so volatile. And both they and those who operate in them are overseen by a complicated mishmash of government rules and regulations, designed (at least purportedly) to protect investors. As the number of investors grows, this job assumes increasing significance.
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