Data arising from financial transactions (investments) made by these institutional groups. Also included are quarterly balance sheet data for short-term assets and liabilities, along with income and expenditure data for insurance companies and self-administered pension funds. All data are reported on a current price basis. In addition, every third quarter release contains annual balance sheet data for all the institutional groups; providing information on the market value of assets and liabilities. Annual income and expenditure data for insurance companies are also reported at this time.