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Nasdaq cancels trades in erroneous transactions

Jin Lee | Bloomberg | Getty Images

Nasdaq MarketWatch said it is canceling some trades in 11 securities that occurred within the first minute of trading Monday.

Companies affected by the move include Black Box, Haynes, First of Long Island, SP Plus, WesBanco and German American Bancorp.

The canceled trades had price movements of 10 percent or more from the previous session's close.

The transactions occurred during the first minute of trading, the exchange said in an alert.

Nasdaq did not say what may have caused the error.

Several of the impacted securities had been halted in morning trading.

—By Reuters