The short version
- Stock markets sell ownership, bond markets sell loans, forex swaps one currency for another, and crypto markets trade digital tokens.
- Stocks trade on regulated exchanges in set sessions; forex runs around the clock on weekdays; crypto never closes.
- Investor protection is strongest where regulation is oldest: listed shares and funds held with a licensed broker.
Financial markets explained in one sentence: they are places where people who have money today meet people who need it, or who want to swap one kind of risk for another. The details differ a great deal from one market to the next, and those details decide what you really own, when you can sell it and who protects you if something goes wrong.
Financial markets explained by what they sell
| Market | What changes hands | Where the return comes from |
|---|---|---|
| Stocks | Part-ownership of a company | Company profits, paid as dividends or kept to grow the business |
| Bonds | A loan to a government or company | Interest payments and repayment of the loan |
| Funds and ETFs | A share of a pool of stocks, bonds or other assets | Whatever the underlying holdings produce, minus fees |
| Forex | One currency for another | Changes in exchange rates and interest-rate differences |
| Crypto | Digital tokens recorded on a blockchain | Only price changes, unless a token pays rewards |
The last column matters most to a long-term investor. Shares and bonds produce cash flows from real economic activity. Currencies and most crypto tokens do not; their value to a holder depends on the price someone else will pay later. That does not make them useless, but it does make them a different kind of holding.
Who runs the market
Exchanges
Shares, ETFs and many futures trade on exchanges: the New York Stock Exchange and Nasdaq in the US, the London Stock Exchange, Deutsche Börse's Xetra in Frankfurt, Japan Exchange Group in Tokyo and others. An exchange runs a central order book, publishes prices, enforces listing rules and hands trades to a clearing house, which stands between buyer and seller so that one side failing does not ruin the other.
Dealer networks
Forex and most bonds trade "over the counter" between banks and dealers rather than on a single exchange. Prices are quoted by dealers and can differ slightly between them. Retail forex is usually accessed through a broker that quotes its own prices.
Crypto platforms
Crypto trades on many separate platforms, each with its own order book and its own rules. Some are licensed in strict jurisdictions; others are not. The blockchain itself records transfers between wallets, but the exchange usually holds customer coins in its own wallets.
How prices are set
On a share exchange, the price you see is simply the last trade matched in the order book. Buyers post bids, sellers post offers, and a trade happens when the two meet. Most large exchanges also run short auctions at the open and the close, gathering orders for a few minutes and then matching them at a single price. The closing auction price is the official close used to value funds and indices, which is why so much trading clusters in the final minutes.
Designated market makers and other liquidity providers keep quoting prices on both sides, earning the spread in return for the risk. In the dealer markets used for forex and bonds, dealers quote directly to clients, and the price you are offered can depend on the size of your trade and your relationship with the dealer. On crypto platforms, automated order books run continuously, but each platform's price is its own.
When markets are open
Share markets keep office hours. New York trades from 09:30 to 16:00 local time, London from 08:00 to 16:30, Frankfurt's Xetra from 09:00 to 17:30, Tokyo in two sessions with a lunch break, and Sydney from 10:00 to 16:00. Forex runs from Sunday evening to Friday evening New York time, following the sun from Asia to Europe to America. Crypto never stops. Our live market board works out which are open now from your own clock.
For investors, closed hours matter because news keeps arriving. A company that reports results after the close can open the next morning at a very different price, a jump called a gap. Index futures, explained in our guide to Nasdaq index futures, give an early read on overnight sentiment.
What protects you
Protection comes from three layers: rules on how the firm holds your assets, rules on how it treats you, and schemes that pay out if a regulated firm fails. For listed shares held with a licensed broker, client assets are normally kept separate from the firm's own money, and many countries run compensation schemes up to a limit. Leveraged forex and CFD accounts in the UK, EU and Australia come with leverage caps, margin close-out rules and negative balance protection for retail clients. Crypto protections vary widely and are often thinner. Before trusting any firm, work through our broker checklist.
Risk and time horizon
Every market carries risk, but the kind of risk differs. A broad share index can fall by a third or more in a bad year, yet has historically been driven over long periods by company earnings. A single share can go to zero. A currency position depends heavily on leverage. Crypto can lose most of its value in months. Matching the market to how long you can leave the money untouched is one of the most useful decisions an investor makes.
Why structure matters even if you only buy funds
A fund investor may never place an order on an exchange directly, yet market structure still shapes the result. An ETF's price during the day depends on the liquidity of the shares it holds and on market makers keeping it close to the value of those holdings. A fund holding overseas shares is affected by currency rates and by the opening hours of those markets. And the protections that apply to your holdings depend on where the fund is domiciled and the broker that holds it for you. Knowing which market sits underneath each holding makes it easier to understand unexpected moves.
Where to read next
- How the stock market works, including dividends and ETFs
- How forex trading works and why currencies affect overseas returns
- How crypto works, without the hype
- The costs of investing in each market
Reader questions
Which financial market is best for a beginner?
There is no single answer, but many long-term investors start with diversified funds that hold listed shares and bonds, because ownership is clear, costs can be low and protections are well established. Leveraged products and crypto carry considerably higher risk.
Why do stock markets close when forex and crypto do not?
Stock exchanges run central order books with staff, auctions and settlement cycles tied to business days. Forex is a network of dealers spread across time zones, and crypto platforms are automated and global, so neither needs a single closing time.
Is a fund safer than a single share?
A fund that holds many companies spreads the risk that any one of them fails, so its price usually swings less than a single share. It can still fall in value when the whole market falls.
Sources
- UK Financial Conduct Authority, restrictions on CFDs for retail clients
- European Securities and Markets Authority, product intervention measures on CFDs
- Exchange trading-hours pages: NYSE, London Stock Exchange, Deutsche Börse Xetra, Japan Exchange Group, ASX