Already, lots of energy and commodity exchanges are trying to get into the act.

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For the last three years, copper has traded on commodity exchanges in a narrow band centering around 76 cents per pound.

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This is the benchmark gasoline product traded on the major commodity exchanges.

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Restrictions will be relaxed in sectors as diverse as civil aviation, construction development, industrial parks, petroleum and natural gas, commodity exchanges, credit-information services and mining.

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Experts on London's commodity exchanges claim that so much Russian nickel, aluminum and copper is being dumped on the market that world prices are depressed.

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Speculation runs rampant in commodity exchanges, stoked by political turmoil and conflict in many oil-producing states and by "resource nationalism" emboldened by the high prices .

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After the CFTC issued 16 of those letters, speculation grew to more than 80 percent of the activity on the commodity exchanges, a Congressional staffer told Taibbi.

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Reg NMS does not cover commodity exchanges, which allows the member-owned, floor-trading New York Mercantile Exchange to sustain its old ways although competition from the all-electronic IntercontinentalExchange could also force it to change.

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In 2002, when India lifted a 33-year ban on commodity derivatives and its government invited bids to set up national commodities exchanges, as many as 16 bidders lined up.

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In a statement Thursday evening, the Securities and Exchange Commission and Commodity Futures Trading Commission said they are working with other regulators and the exchanges to review unusual trading activity during the afternoon.

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