Mae buddsoddi yn cyfeirio at y llif arian o gwmpas gwledydd a rhwng gwledydd at ddibenion gwneud elw. Mae pensiwn yn swm penodedig a delir yn rheolaidd i unigolyn, fel arfer ar ôl iddo ymddeol, ac mae ymddiriedolaeth yn drefniant cyfreithiol lle mae 1 'ymddiriedolwr' neu fwy yn cael ei wneud yn gyfrifol yn gyfreithiol am ddal asedau. Mae'r ystadegau yma yn cynnwys llifau net i'r DU, ffigurau ar nifer y bobl sy'n dal pensiynau o wahanol fathau, a buddsoddiadau a wnaed gan amryw fathau o ymddiriedolaethau.
Net investment of £12 billion was reported by insurance companies, pension funds and trusts in Quarter 1 (Jan to Mar) 2017; this follows two consecutive quarters of net disinvestment, the 5-year quarterly average for this series is net investment of £6 billion.
Quarter 1 2017 saw the largest net investment (£20 billion) in short-term assets since this series began in 1983; this was mainly caused by net investment by unit trusts and property unit trusts (£7 billion) and long-term insurance companies (£7 billion).
In Quarter 1 2017, the net disinvestment (£16 billion) in UK corporate securities was the largest since this series began in 1987; this was predominantly due to net disinvestment in UK ordinary shares (£15 billion).
Investment choices of financial institutions based on financial transactions (investments and disinvestments), including balance sheet data for short-term assets and liabilities, and income and expenditure data.
Contributions to private (non-state) pensions. Private pensions considered are: occupational schemes for private sector and public sector employees; and personal pensions, including group personal and stakeholder pensions.