What does Convertible Loan Stock mean?

Common or preferred stock shares that are used as collateral to secure a loan from another party. The loan will earn a fixed interest rate, much like a standard loan, and can be secured or unsecured. A secured loan stock may also be called a convertible loan stock if the loan stock can be directly converted to common shares under specified conditions and with a pre-determined conversion rate, as with an irredeemable convertible unsecured loan stock(ICULS).