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Trading Basics

Glossary

The words you hear on the news and in your banking app, in one or two plain sentences each.

Asset
Anything you own that has value and can be bought or sold: shares, bonds, property, cash, gold.
Basis point
One hundredth of a percentage point. A rate rise from 2.00% to 2.25% is 25 basis points.
Bear market
A long, broad fall in prices, often defined as a drop of 20% or more from a recent high. Read more →
Bond
A loan to a government or company that pays interest and is repaid on a set date. Bonds can be bought and sold before then. Read more →
Broker
A firm that buys and sells investments on your behalf on an exchange. In the EU, brokers must be authorised by a regulator. Read more →
Bull market
A long, broad rise in prices. Read more →
Capital gain
The profit when you sell something for more than you paid for it. A capital loss is the opposite.
Central bank
The institution that sets interest rates and looks after a currency. For the euro, the European Central Bank (ECB). Read more →
CFD
Contract for difference: a bet on a price moving, usually with borrowed money. Most retail CFD accounts lose money. Read more →
Compound interest
Growth on top of earlier growth: returns that stay invested start earning returns of their own. Read more →
Coupon
The interest a bond pays, usually once or twice a year.
Deflation
Prices falling across the economy, the opposite of inflation.
Deposit facility rate
The rate the ECB pays banks on money they leave with it overnight. Since 2024 it is the main rate the ECB steers with. Read more →
Diversification
Spreading money across many investments so that one going wrong hurts less. It does not remove the risk of the whole market falling. Read more →
Dividend
Part of a company's profit paid out to its shareholders. Read more →
ETF
Exchange-traded fund: a fund holding a basket of investments, often a whole index, that trades on an exchange like a single share. Read more →
Euribor
The rate at which euro-area banks lend to each other. Most variable-rate mortgages in Portugal follow it.
Exchange rate
The price of one currency in another. EUR/USD at 1.12 means one euro buys 1.12 US dollars. Read more →
GDP
Gross domestic product: the value of everything an economy produces in a period. 'Real' GDP takes inflation out. Read more →
HICP
Harmonised Index of Consumer Prices: the EU's common measure of inflation, calculated the same way in every member state. Read more →
Index
A single number that sums up how a group of shares or bonds is doing, such as the S&P 500 or the PSI. Read more →
Inflation
The yearly rise in the price of a typical basket of household spending. Read more →
KID
Key Information Document: the short leaflet every EU investment fund must publish, with its costs and a risk score from 1 to 7.
Leverage
Investing with borrowed money. It makes gains and losses bigger. Read more →
Liquidity
How quickly something can be sold without moving its price much. Cash is very liquid; a house is not.
Market capitalisation
A company's share price multiplied by its number of shares: what the stock market values the whole company at.
Nominal vs real
Nominal is the number as stated; real is what it's worth after inflation. A 2% pay rise with 3% inflation is a real pay cut.
Portfolio
Everything a person or fund has invested, taken together.
Recession
A broad, lasting fall in economic activity. A common rule of thumb is two quarters in a row of shrinking GDP. Read more →
Return
What an investment gains or loses over a period, including any income it pays, usually shown as a percentage.
Risk
In investing, mainly the chance that the value falls or swings a lot, and that you need the money at a bad moment. Read more →
Share (stock)
A small piece of ownership in a company. Read more →
Spread
The gap between the price buyers offer and sellers ask. Also the gap between two interest rates, such as Portugal's and Germany's bond yields.
Stablecoin
A cryptoasset designed to keep a steady value against a currency such as the euro or the dollar. Read more →
TER
Total expense ratio: a fund's yearly running cost as a percentage of what you hold in it. Read more →
UCITS
The EU rulebook for investment funds sold to the public, covering how they invest, spread risk and report.
Volatility
How much and how fast a price swings up and down. Read more →
Yield
The yearly income from an investment as a percentage of its price. For bonds, the return if bought today and held to the end. Read more →