Definition of 'Loan Stock'
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).
This type of financing is also known as "portfolio loan stock financing".
Investopedia explains 'Loan Stock'
There are actually full-fledged businesses that do nothing but loan-stock transactions, allowing a portfolio holder to obtain financing based on the value of their securities, as well as other factors such as the implied volatility of their holdings. A loan-to-value (of the portfolio) ratio will be established - much like with a home mortgage - and the funds will be backed by the security holdings in the borrower's portfolio.