The Bank for International Settlements located in Basel, Switzerland, is the central bank for central banks. The BIS frequently acts as the market intermediary between national central banks and the market. The BIS has become increasingly active as central banks have increased their currency reserve management. When the BIS is reported to be buying or selling at a level, it is usually for a central bank and thus the amounts can be large. The BIS is used to avoid markets mistaking buying or selling interest for official government intervention.