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NYSE Probes Trades in American Electric, NextEra Energy

NYSE Euronext let stand trades that sent American Electric Power Co. and NextEra Energy Inc. down at least 54 percent, while labeling them “aberrant” and excluding them from records showing the stocks’ lows of the day.

American Electric Power fell as much as $26.31, or 54 percent, to $22.28 a share, in the first minute U.S. exchanges were open today, according to data compiled by Bloomberg. NextEra Energy, another electricity supplier, sank as much as 62 percent to $30.37. Both stocks are listed on the New York Stock Exchange.