The U.S. Securities and Exchange Commission has spent 15 years remaking the stock market into 11 competing exchanges and hundreds of computer-driven traders. In the process it has virtually eliminated the traditional market makers who bought and sold stocks when no one else would.
Now the SEC is concerned the revolution has gone too far, leaving markets vulnerable when selling starts to snowball.
Chairman Mary Schapiro called on the agency last week to examine whether the loss of “old specialist obligations” has hurt investors after measures such as trading stocks in penny increments cut the number of those firms on the New York Stock Exchange to 5 from 25 in 2000. With market making now dominated by hundreds of automated traders with few rules for when they must buy and sell, the SEC will consider ways to keep the biggest from abandoning the market at the first sign of trouble.
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09/13/2010
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