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Forex, Stock & Crypto Terms Explained

Our trading glossary: the language of stocks, funds and markets, with a few forex and crypto terms you will meet along the way.

AtlanticQuote editorial team. Updated 26 September 2026. How we work

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Accumulation units
Fund units that reinvest dividends automatically rather than paying them out.
Asset allocation
How a portfolio is split between shares, bonds, cash and other assets.
Bear market
A fall of 20% or more from a recent high.
Blue chip
A large, established company with a long record.
Bond
A loan to a government or company that pays interest.
Bull market
A sustained period of rising prices.
Capital gain
The profit from selling an asset for more than you paid.
Compounding
Earning returns on previous returns, the engine of long-term growth.
Dividend
A cash payment from a company's profits to shareholders. See dividends.
Dividend yield
Annual dividends per share divided by the share price.
Earnings per share (EPS)
A company's profit divided by the number of shares.
ETF
Exchange-traded fund: a fund whose shares trade on an exchange like a stock.
Ex-dividend date
Buy on or after this date and you do not receive the next dividend.
Expense ratio
A fund's annual running cost as a percentage of assets; also called the ongoing charge.
Index
A measure of a group of securities, such as the S&P 500.
Index fund
A fund that aims to match the return of an index.
IPO
Initial public offering: when a company first sells shares to the public.
Limit order
An order to buy or sell only at a set price or better.
Liquidity
How easily an asset can be bought or sold without moving the price.
Market capitalisation
Share price multiplied by the number of shares; a company's market value.
Market order
An order to trade immediately at the best available price.
P/E ratio
Share price divided by earnings per share.
Pip
The standard unit of movement in a currency pair. See the pip calculator.
Portfolio
All the investments a person holds.
Rebalancing
Adjusting holdings back to a target mix. See diversification.
Sector
A group of companies in the same industry, such as healthcare or energy.
Share buyback
When a company buys its own shares, reducing the number outstanding.
Spread
The gap between buying and selling prices.
Stablecoin
A crypto token designed to track a currency. See USDT.
Stock split
Dividing each share into several, lowering the price per share without changing total value.
Ticker
The short code that identifies a listed security.
Total return
Price change plus reinvested dividends.
Volatility
How much a price moves up and down over time.
Withholding tax
Tax deducted at source on dividends paid to foreign investors.