Answer: Sveriges Riksbank
Sveriges Riksbank, or simply Riksbanken, is the central bank of Sweden and the world's oldest central bank. It is sometimes called the Swedish National Bank or the Bank of Sweden.
Following its third centennial in 1968, the Bank instituted the annual Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, which is awarded with the Nobel Prizes at the Prize Award Ceremony in Stockholm, on December 10, the anniversary of Nobel's death.
In July 2009 Sweden's Riksbank was the first central bank to use a negative interest rate, lowering its deposit rate to −0.25%, a policy advocated by deputy governor Lars E. O. Svensson to counter economic slowdown due to the financial crises of 2008. This is the interest (or in this case, "penalty") commercial banks get for depositing capital at the Riksbank over night. The lending rate, i.e. the interest commercial banks have to pay for lending money over night, is positive 0.75 percent.
