Procter & Gamble verlor zwischenzeitlich 37% intraday.... Kettenreaktion
NYSE: P&G's Plunge Came After Stock Moved Below Circuit Breaker
NEW YORK (MarketWatch) -- Shares of Procter & Gamble tumbled as much as $22.79, or 37%, at one point Thursday afternoon after sharp declines in the stock market sent the stock below a key circuit breaker level.
Once a stock falls below its circuit breaker, or what the New York Stock Exchange calls "liquidity replenishment points," the price quotes are no longer just electronic and they go into "slow" mode, under which they are no longer protected under Regulation NMS. Reg NMS requires traders to transact on a trading venue at the lowest price rather than on a venue offering the quickest execution or the most reliability.
In turn, when P&G's stock fell below its circuit breaker, other market centers can trade through the quotes. While the designated market maker at the NYSE traded at the $56 level, a trade came through from the Nasdaq exchange at $39.37, according to the NYSE.
The trade went through because once a stock is below its circuit-breaker level, "we're looking to trade all the liquidity at the right price, an NYSE official said.
P&G wasn't the only stock that fell below its circuit-breaker level in Thursday's tumble, the NYSE official said. 3M Co. /quotes/comstock/13*!mmm/quotes/nls/mmm (MMM 84.09, -0.15, -0.18%) was another.
Both P&G and 3M are components of the Dow Jones Industrial Average. In turn, their plunges prompted the Dow's levels to fall sharply; when traders saw the Dow at those levels, it exacerbated the decline as it fueled further fears. NEW YORK (MarketWatch) -- Shares of Procter & Gamble tumbled as much as $22.79, or 37%, at one point Thursday afternoon after sharp declines in the stock market sent the stock below a key circuit breaker level.
Once a stock falls below its circuit breaker, or what the New York Stock Exchange calls "liquidity replenishment points," the price quotes are no longer just electronic and they go into "slow" mode, under which they are no longer protected under Regulation NMS. Reg NMS requires traders to transact on a trading venue at the lowest price rather than on a venue offering the quickest execution or the most reliability.
In turn, when P&G's stock fell below its circuit breaker, other market centers can trade through the quotes. While the designated market maker at the NYSE traded at the $56 level, a trade came through from the Nasdaq exchange at $39.37, according to the NYSE.
The trade went through because once a stock is below its circuit-breaker level, "we're looking to trade all the liquidity at the right price, an NYSE official said.
P&G wasn't the only stock that fell below its circuit-breaker level in Thursday's tumble, the NYSE official said. 3M Co. /quotes/comstock/13*!mmm/quotes/nls/mmm (MMM 84.09, -0.15, -0.18%) was another.
Both P&G and 3M are components of the Dow Jones Industrial Average. In turn, their plunges prompted the Dow's levels to fall sharply; when traders saw the Dow at those levels, it exacerbated the decline as it fueled further fears.
http://www.marketwatch.com/story/...-below-circuit-breaker-2010-05-06
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