The Swedish National Pension Funds (First, Second, Third, Fourth and Sixth Swedish National Pension Funds) operate as a financial buffer for the national public pension system. Their mission is to invest the managed capital and create high longterm returns taking into account the need for a satisfactory risk diversification. Moreover, as regards the First to Fourth Swedish National Pension Funds, any surplus resulting from the contributions paid in and pensions paid out as incomerelated pension is managed by the Swedish National Pension Funds whereas any deficit must be covered by their funds.