Glossary
Investing terms explained simply
Jargon is one of the main reasons investing feels harder than it is. These are the terms new investors meet first, each defined in one or two plain sentences. New to investing entirely? Start with the beginner's guide to investing, or see how Mesodian helps you understand a company.
- Share (stock)
- A unit of ownership in a company. Its value can rise or fall; owning a share does not guarantee dividends or a share of future profits.
- Fund
- A pooled investment that follows a stated strategy. It may hold shares, bonds or other assets; check its actual holdings rather than assume it is broadly diversified.
- ETF (exchange-traded fund)
- A fund bought and sold on a stock exchange. It can follow an index or an active strategy. Some ETFs are narrowly focused or use leverage; costs and risks vary.
- Index fund
- A fund designed to match the performance of a market index, such as the S&P 500 or a global shares index, rather than beat it.
- Bond
- An investment that generally means lending to a government or company. Interest and repayment depend on its terms and the borrower; bonds can fall in value or default.
- Dividend
- A payment a company makes to shareholders. Payments and schedules vary, and dividends can be reduced or stopped.
- Yield
- Income from an investment expressed as a percentage of its price — for example, annual dividends divided by the share price.
- Diversification
- Spreading money across companies, sectors, regions or asset types to reduce dependence on any one investment. It can reduce some risks but cannot prevent losses.
- Asset allocation
- The mix of investment types, such as shares, bonds and cash, in your portfolio. This mix influences its risk and potential returns.
- Portfolio
- Everything you own as an investor, viewed together rather than as separate holdings.
- Compounding
- When returns are reinvested and can earn further returns. Growth is not guaranteed, and investment losses and costs also affect the result.
- Volatility
- How much an investment’s price moves over time. It is one aspect of risk, not a complete measure of how much you could lose.
- Risk
- The possibility of losing money or not reaching your goal. It includes price falls, borrower failure, difficulty selling and other uncertainties.
- Market capitalisation
- A company's total value on the market: share price multiplied by the number of shares in issue.
- P/E ratio
- Price divided by earnings per share. A rough gauge of how much investors are paying for each pound or dollar of profit.
- Earnings
- A company's profit after costs and tax. Reporting periods and accounting measures vary; read the financial statements for context.
- Revenue
- Total sales before any costs. Growth in revenue shows demand; it says nothing on its own about profitability.
- Free cash flow
- Generally, cash from operations minus capital spending. Definitions vary, so check how a company calculates it.
- Valuation
- An estimate of what a business is worth, used to judge whether today's price is reasonable.
- Bull market / bear market
- A sustained rise in prices, and a sustained fall of roughly 20% or more, respectively.
- Dollar-cost averaging
- Investing a fixed amount at regular intervals so you buy more units when prices are low and fewer when they are high.
- Rebalancing
- Trimming what has grown and topping up what has lagged, to return your portfolio to its intended mix.
- Broker / platform
- The service you use to buy and hold investments. Fees, available markets and account types vary widely.
- Expense ratio
- A fund’s annual operating costs expressed as a percentage of its assets. Trading charges, platform fees and other costs may apply separately.
- Accumulating fund
- A fund that reinvests income rather than paying it to investors. Reinvestment does not remove investment risk or necessarily remove tax obligations.
- Distributing fund
- A fund that pays income to investors. Payment amounts and schedules vary, and income is not guaranteed.
- Capital gains tax (CGT)
- A tax that may apply to profits when you sell an asset. Rates, exemptions and reporting rules depend on your tax residence, account and investment.
- Inflation
- An increase in prices over time, reducing what the same amount of money can buy. Investment returns need to be considered alongside inflation, costs and taxes.
- Market order
- An instruction to buy or sell at the best available price when the order reaches the market. The final price is not guaranteed.
- Limit order
- An instruction that sets the highest price you will pay when buying, or the lowest price you will accept when selling. The order may not complete.
- Fractional share
- Part of a whole share. Some providers offer fractional purchases, but availability, transfer rules and selling restrictions vary.
See these terms in context
Mesodian helps beginners learn how to invest, understand the stock market and manage their investments. It brings simple lessons, clear company scores, ready-made portfolios and tracking tools together in one place. Working alongside your broker, Mesodian helps you understand what you own, what’s changing and why, so you can build knowledge and confidence as you go.
Choose membershipDefinitions are for informational purposes and are not financial advice.