Stock Market Basics · 7 min read
What is the stock market?
A marketplace where ownership stakes in companies are bought and sold. It lets investors buy shares in businesses and gives companies access to capital for growth.
Shares represent ownership
A company can be divided into millions of equal units called shares (or stock). When you own a share, you become a part-owner of that company. The more shares you own, the larger your ownership stake in the company.
As a shareholder, you may be entitled to:
- A proportional share of the company's future profits.
- Dividend payments, if the company chooses to distribute them.
- Voting rights on major corporate decisions, depending on the type of shares you own.
How the stock market works
The stock market is a network of exchanges, brokers and trading systems where shares are bought and sold between investors. It is not a single building or computer system, but a connected marketplace that operates across multiple venues.
Every trade occurs when a buyer and a seller agree on a price.
Where share prices come from
No person or organization simply sets a stock's price. Instead, the share price is determined by the most recent transaction between a willing buyer and a willing seller.
When demand for a stock is greater than supply, prices tend to rise. When more investors want to sell than buy, prices tend to fall. Several factors influence stock prices:
- Future expectations matter most. Investors buy stocks based on what they believe the company will earn in the future, not just its current performance.
- News and economic conditions affect demand. Company announcements, interest rates, inflation, economic growth and global events can all influence investor decisions.
- Investor sentiment plays a role. Confidence, fear and market optimism can move prices even when company fundamentals remain unchanged.
- Prices constantly adjust. As new information becomes available, investors reassess value, causing stock prices to change throughout the trading day.
In essence
A stock's market price represents the collective judgment of millions of investors about what that company is worth at a given moment.
Key takeaways
- A share is a unit of ownership in a company.
- Shareholders may receive a share of profits, dividends and voting rights.
- The market is a connected network of exchanges, brokers and trading systems.
- Prices come from trades between willing buyers and sellers, and move with expectations, news and sentiment.
Check your understanding
Answer 2 of 3 correctly to complete this lesson.
Unfamiliar word? Look it up in the Glossary.
Model output for education and research — not financial advice or a personal recommendation; your decisions are yours. Always do your own research and manage your risk.