One stock gapped down today with an opening price significantly lower than the previous trading day's close:
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- Ciena Corporation (CIEN) opened at $14.84, gapping down from its previous close of $16.72. Shares are down 14.8%, trading at a volume of 7.7 million. Shares are down $2.98 (-17.3%) from a price of $17.22 on August 23, 2012. The stock has moved down across its 50-day moving average of $16.46 today.