As stated in the business disturbance message as of January 14, 2014 the expiration date in April regarding Norwegian Single Stock derivatives was changed from April 16, 2014 to April 15, 2014.
For further technical details se IT-notice 6/14.
For further information concerning this exchange notice please contact Trading Operations,
telephone +46 8 405 73 60, or tradingoperations@nasdaqomx.com