The funds, which had been worth $1.5 billion at the beginning of the year, were invested in financial products linked to what quickly became the notorious American subprime market. Sub-prime loans, to US households with impaired credit histories (the joke was that they were ‘Ninja’ borrowers, with no income, no job and no assets) had been around for many years. They however, along with adjustable rate mortgages (Arms), had expanded very rapidly from around 2003 and, more significantly, had been used as the basis for financial instruments – structured investment vehicles – sold to investors and traded between the banks. Mortgage-backed securities, as their name suggests, are financial instruments based on household mortgages. Even more sophisticated instruments, so-called credit derivatives based on those securities, ‘sliced and diced’ the original securities up even further and greatly multiplied the potential losses if there were problems with the underlying asset, the mortgage.
