Due to the strike in Finland planned for December 14th to 16th NASDAQ OMX Derivatives Markets would like to remind our participants of the possible consequences. Margin requirements and collateral handling NASDAQ OMX Derivatives Market sends out margin requirement notices to clearing participants at minimum once per day. In the derivatives rules and regulations it is stated that the margin requirement shall be covered by collateral. Please note that failure to meet the margin requirement constitutes a breach of the derivatives rules and regulations and may lead to a clearing participant being declared into default by the NASDAQ OMX Derivatives Markets. Therefore, we urge all clearing participants to take appropriate measures to ensure that margin calls can be met and dealt with in a timely manner. A recommended measure is to ensure that the collateral pledged on Friday December 11 provides for anticipated changes in the daily margin requirement (resulting from changed market prices and possibly new trades) for the time period of Monday December 14 through Wednesday December 16. Settlement NASDAQ OMX Nordic Operations will operate as usual. The settlement will be carried out as on any normal business day and all participants are expected to meet the settlement instructions. For further information, please see the attached file.