Stock Market Basics: Shares, Indices and Exchanges Explained

What actually is a share, an index or an exchange? This beginner-friendly primer explains the building blocks of the stock market in plain language.

By StockYatra Team
Bar chart illustration for stock market basics

The stock market rests on a few simple ideas. Understand these building blocks and the headlines suddenly make sense.

What is a share?

A share is a small piece of ownership in a company. If the company grows and profits, your slice can become more valuable; some also pay dividends.

What is a stock exchange?

A stock exchange is the regulated marketplace where shares trade — NEPSE in Nepal, or the NSE and BSE in India. It matches buyers with sellers.

Key idea: Prices are set by supply and demand. More buyers than sellers pushes price up; more sellers pushes it down.

What is an index?

An index is a basket of stocks used to measure a market in one number — the NEPSE Index, NIFTY 50 or SENSEX.

Primary vs secondary market

  • Primary market: companies first sell shares (an IPO).
  • Secondary market: investors trade those shares afterwards — the day-to-day market on a chart.

Key takeaways

  • A share is part-ownership of a company.
  • Exchanges match buyers and sellers; indices summarise the market.
  • Prices move on supply and demand.
  • Returns come from capital gains and dividends — with real risk.

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Frequently asked questions

How does the stock market actually work?

Companies list shares on an exchange; investors buy and sell them, and prices move on supply and demand. You profit from price gains and dividends.

What is the difference between a share and a stock?

They are used interchangeably. "Stock" is the general term; a "share" is a single unit of a company’s stock.

Can you lose money in the stock market?

Yes. Prices fall as well as rise, so never invest money you cannot afford to leave invested, and manage risk carefully.