American Electric Power

Evidence of the short-lived plunges in shares of American Electric Power Co. Inc. (AEP) and NextEra Energy Inc. (NEE) were wiped off the tape, but not from investors' portfolios.Late on Thursday, the New York Stock Exchange published the official daily high and low prices for the two stocks. For American Electric Power, Thursday's intraday low is $46.07. For NextEra Energy, it is $76.50.But those prices don't reflect sharp drops sustained by both stocks in the first minute of trading. American Electric Power fell by more than 50% to $22.28 before bouncing back, while NextEra dropped by more than 60% to $35.50.NYSE said it investigated trades in both utility companies that took place between 9:30 a.m. and 9:31 a.m. EDT, and ultimately cancelled none.American Electric Power's shares closed down 31 cents, or 0.6%, to $48.28. NextEra ended lower by 94 cents, or 1.2%, to $78.22.Instead, the exchange said all trades in American Electric Power at or below $46.03, and in NextEra Energy at or b...

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