Plain Investor
132 terms, A to Z

The Investing Glossary

Every term you will meet on this site and in a fund factsheet, explained in plain English with a worked example — from accumulating funds to yield to maturity.

#

A

B

Balance sheetA financial statement listing what a company owns, what it owes and the shareholders' equity left over, at a single date.Bear marketA prolonged fall in share prices, conventionally defined as a decline of 20% or more from a recent peak, usually with widespread pessimism.BetaA measure of how sensitive an investment is to movements in the overall market; a beta of 1 means it has tended to move in line with it.Bid-ask spreadThe gap between the highest price a buyer will pay (the bid) and the lowest price a seller will accept (the ask or offer) at a given moment.BitcoinThe first cryptocurrency: a decentralised digital currency, launched in 2009, whose transactions are recorded on a public blockchain and whose supply is capped.BlockchainA shared digital ledger in which records are grouped into blocks linked by cryptography, making past entries very hard to alter without detection.Blue-chip stockA share in a large, well-established and financially sound company with a long record of reliable earnings, often paying regular dividends.BondA loan to a government or company that pays interest at set intervals and repays the original sum on a fixed date.Bond ladderA portfolio of bonds bought to mature in a sequence of years, so that money comes back at regular intervals.Bond yieldThe return a bond offers relative to its market price; because the payments are fixed, yields move in the opposite direction to bond prices.Brokerage accountAn account with an investment firm or platform that lets you buy, sell and hold securities such as shares, bonds and funds.Bull marketA prolonged period of rising share prices, often defined as a rise of at least 20% from a recent low, usually accompanied by investor optimism.

C

Call optionAn option giving its buyer the right, but not the obligation, to buy an asset at a fixed strike price on or before a set expiry date.Capital gains taxA tax on the profit made when you sell or otherwise dispose of an asset, such as shares or property, for more than it cost.Cash flow statementA financial statement showing the cash that actually came into and left a company over a period, grouped by source.Central bankThe public institution that issues a country's currency, sets its policy interest rate and oversees the stability of its banking system.CFD (contract for difference)A leveraged contract with a provider that pays the difference in an asset's price between opening and closing a position, without owning the asset.Citizenship by investmentA route by which a country grants citizenship, and therefore a passport, to foreign nationals in return for a donation or qualifying investment.Compound interestEarning returns not only on your original money but also on the returns it has already earned, so that growth accelerates over time.Consumer price index (CPI)An official index that tracks the average change in the prices households pay for a fixed basket of goods and services.ConvexityA measure of how a bond's sensitivity to interest rates itself changes as rates move, refining the estimate given by duration.Core inflationA measure of inflation that strips out volatile items, typically food and energy, to show the underlying trend in prices.CorrelationA statistic from −1 to +1 measuring how closely the returns of two investments move together, and a key input to diversification.CouponThe fixed interest a bond pays, stated as a percentage of its face value and usually paid once or twice a year.Credit ratingA rating agency's letter-grade opinion of how likely a borrower is to pay its debts in full and on time.Crypto walletSoftware or a device that stores the private keys needed to control crypto assets; the coins themselves stay recorded on the blockchain.CustodianA financial institution that holds and safeguards securities and cash on behalf of investors, keeping them separate from its own assets.

D

E

F

G

H

I

K

L

M

N

O

P

Q

R

S

S&P 500A stock market index of around 500 large US companies, weighted by market value and widely used as the benchmark for the US stock market.Schengen AreaA group of European countries that have abolished passport checks at their shared internal borders and apply common rules to short-stay visitors.Sequence-of-returns riskThe risk that poor investment returns early in retirement, while you are withdrawing money, permanently reduce how long a portfolio lasts.Share buybackWhen a company uses its cash to buy back its own shares, reducing the number in issue and increasing each remaining shareholder's stake.Sharpe ratioA measure of risk-adjusted return: the return earned above a risk-free rate for each unit of volatility taken on.Short sellingSelling borrowed shares in the hope of buying them back later at a lower price; it profits from falls, and potential losses are unlimited.SIPCThe US Securities Investor Protection Corporation, which helps customers recover cash and securities, up to limits, when a member brokerage firm fails.SIPPA UK self-invested personal pension: a do-it-yourself pension account that receives tax relief on contributions and lets you choose the investments.Small-cap stocksShares in companies with a relatively small total market value, which tend to be more volatile and less widely researched than large companies.StablecoinA crypto token designed to hold a steady value, usually one unit of a currency such as the US dollar, by being backed by reserves or managed by an algorithm.Standard deviationA statistical measure of how widely returns are spread around their average; in investing it is the standard way to quantify volatility.Stock (share)A unit of ownership in a company, giving its holder a claim on part of the company's profits and assets and usually a vote at shareholder meetings.Stock exchangeA regulated marketplace where shares and other securities are listed and traded between buyers and sellers under a common set of rules.Stock market indexA single number that tracks the combined value of a defined basket of shares, used to measure how a market or part of a market is performing.Stock splitA change that divides each existing share into several new ones, lowering the price per share without changing the total value of a holding.Stop-loss orderAn order that automatically sells a holding if its price falls to a chosen trigger level, intended to limit further losses.Synthetic ETFAn ETF that delivers an index’s return through a swap agreement with a bank, rather than by owning the securities in the index.

T

U

V

W

Y