Chapter 1 of 7

What is the stock market?

Understand what a share represents, how trading differs from investing in a business, and why ownership does not guarantee a return.

3 min read · Original educational chapter

In this chapter

Ownership before the price screen
Primary and secondary markets
Price, return and uncertainty
Decision lab: Ownership is a residual claim
Worked example
Common mistakes
Check your understanding

Ownership before the price screen #

A company can divide its equity into shares. A shareholder owns a residual interest in the business, rather than a deposit that the company promises to repay. Depending on the class of share and company rules, ownership can include voting rights and eligibility for dividends. It does not mean direct ownership of a particular machine or bank balance.

If the business closes, lenders and other claimants generally rank ahead of equity holders. A profitable company can still have a falling share price if expectations, valuation or financing conditions change. A low share price by itself says nothing about whether ownership is inexpensive.

Primary and secondary markets #

In a primary issue, new securities are offered and the issuer may receive capital. In the secondary market, existing holders trade with other participants. Most activity on a trading screen is secondary trading; buying an existing share normally pays the selling investor, not the company.

An exchange organizes order matching and trading rules. A broker provides access, a depository records electronic holdings, and clearing arrangements support the movement of funds and securities. These roles are distinct. Opening a trading account does not remove business, execution or custody-related operational risks.

Price, return and uncertainty #

Market price is the amount at which compatible orders actually meet. It is not a regulator’s statement of fair value. Prices can move because of new information, liquidity needs or changing expectations. Total return includes price changes and cash distributions, less costs and taxes.

Before studying any technique, distinguish an ownership claim from a promise. Education can help explain the claim and its risks. It cannot establish a future return for a real security.

Decision lab: Ownership is a residual claim #

A fictional company’s share price falls while its reported profit grows. Reconcile enterprise performance, the price paid and the claim held before deciding the price move is irrational. Equity holders do not receive a fixed contractual return just because the business remains profitable.

Compare 1% ownership before and after a 25% increase in total shares. Keep total company value unchanged in one scenario and change it in another. Explain why dilution of percentage ownership does not alone quantify economic loss.

Hypothetical worked example

A fictional ownership and return example

A fictional company has 1,000 shares. Owning 10 means owning 1% before any new issuance. Buying those 10 at ₹100 each costs ₹1,000, ignoring charges.

If the shares later trade at ₹90, their market value is ₹900. A ₹20 total dividend would make the pre-cost economic change −₹80: ₹900 + ₹20 − ₹1,000. Ownership has not prevented a loss.

If 250 new shares are issued and you buy none, your 10 shares represent 10 ÷ 1,250 = 0.8%. This is dilution of percentage ownership; the effect on economic value depends on what the company receives and does with the capital.

Common mistakes

Confusing a familiar brand with a suitable investment.
Treating the exchange price as a guarantee of business value.

Check your understanding

A share primarily represents what?

Make this chapter useful

Can you defend the reasoning?

Before moving on, answer the self-check in your own words and write why each alternative fails. Use the worked example to test that explanation. Then apply it in the module research task; keep the assumptions and the evidence that could change your answer.

Sources and further reading

Further-reading references from the curriculum source list. Contract sizes, expiry calendars, settlement references, margin parameters and tax treatment can change; verify the current operative documents for the actual product. Worked figures are illustrative, not current quotes.

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General financial education. No securities recommendation, assured outcome or personal advice. Read the risk disclosures.