An experimental circuit breaker program starts next week to slow superfast electronic stock markets during episodes of severe volatility. Regulators say they plan to monitor any unforeseen outcomes and learn from them.
But already there are large players on Wall Street warning of potential pitfalls, and it's the small investor, not large hedge funds, who could be most vulnerable.
One major concern, for example, involves exchange-traded funds, or ETFs. These are essentially mutual funds which...Full Story