Investors who borrow money they use for investment and use the securities they buy as collateral for the loan are said to be “gearing up” the portfolio (in the US, gearing is referred to as “leveraging”) and widely used by investment trusts. The greater the gearing as a proportion of the overall portfolio, the greater the potential for profit or loss. If markets rise in value, the investor can pay back the loan and retain the profit but if markets fall, the investor may not be able to cover the borrowing and interest costs, and will make a loss. Also used to describe the ratio of a company’s borrowing in relation to its market capitalisation and the gearing ratio measures the extent to which a company is funded by debt. A company with high gearing is more vulnerable to downturns in the business cycle because the company must continue to service its debt regardless of how bad sales are.
A way of valuing a company by the total value of its issued shares and calculated by multiplying the number of shares in issues by the market price. This means the market capitalisation fluctuates continually as the value of the shares change in the market. For example, HSBC has 17.82bn shares in issue at a price of 646.2p making a market capitalisation of £115.15bn.