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>> they were talking about changes potential changes with rules and regulations in the wake of this. >> this afternoon, the major exchanges promised to write a uniform set of rules on circuit breakers so if a stock drops a certain percentages. the lows could stop across all exchanges. some say electronic trading and market technology means trades happened too quickly and make problems word. traders say it makes the market more efficient. >> shepard: anybody with a fidelity account, thats how peo...