How Stock Exchanges Work
A stock exchange provides rules and infrastructure for trading eligible securities. Order execution, clearing, settlement and custody are related but distinct stages, often performed by different organizations.
How it works
A broker routes an investor’s order to a venue or other execution destination. Trades are matched under that destination’s rules, then cleared and settled through the relevant infrastructure. Trading hours, auctions, minimum increments and settlement cycles vary by market. A quote is not a guarantee that unlimited size can trade at that price.
Worked example
An investor submits an order for 150 shares. The best ask displays 100 shares at 20.00 and the next level offers 50 at 20.05. A market buy consuming both levels costs 3,002.50 before fees, an average of about 20.0167. The trade confirmation records the fills; the account’s cash and securities move under its settlement arrangements afterward.
Amounts, prices and scenarios are fictional teaching examples. They exclude any effects not explicitly stated and are not trade recommendations.
Limits and common mistakes
Halts, outages and fast quote changes can affect execution. A stock’s listing venue need not be the venue where every trade occurs. Avoid applying one country’s settlement timetable or investor protections universally.
Knowledge check
Are execution and settlement the same event?
Read the explanation
No. Execution establishes the trade. Settlement completes the relevant delivery and payment under the market’s rules and the account’s arrangements.
References and further reading
- SEC Investor.gov: stocks, ownership and risks
- SEC: company filings and financial reports
- SEC: beginners’ guide to financial statements
These sources explain the underlying concepts and specifications. They do not endorse QBMFX Academy. Check the relevant market, protocol version and reporting rules before applying an example.