What Are Stocks?

Owning a Piece of a Business

A stock — also called a share or equity — represents partial ownership of a company. When you buy one share of Apple, you own a tiny fraction of the most valuable company on Earth. You are not just trading a ticker symbol — you are buying a claim on Apple’s future profits, assets, and cash flows.

This distinction matters because it changes how you think about stock prices. A stock price is not just a number on a screen — it is the market’s collective estimate of what a fractional ownership stake in a business is worth. When Apple trades at $175 per share with 15.5 billion shares outstanding, the market is saying Apple — all of it — is worth approximately $2.7 trillion.

“In the short run, the market is a voting machine, but in the long run, it is a weighing machine.”

Benjamin Graham, The Intelligent Investor

Common Stock vs. Preferred Stock

Common stock is what most people mean when they say “stock.” It gives you voting rights (typically one vote per share), a claim on profits through dividends (if the company pays them), and the right to your proportional share of remaining assets if the company is liquidated — but only after all debts and preferred shareholders are paid first.

Preferred stock is a hybrid between stocks and bonds. Preferred shareholders receive fixed dividends (like bond coupons) and get paid before common shareholders in liquidation. However, preferred shares typically carry no voting rights and limited upside — they do not benefit as much when the company grows rapidly. Preferred stocks are popular with income-focused investors and banks.

KEY CONCEPT

What Gives a Stock Its Value?

A stock’s fundamental value comes from the company’s ability to generate cash in the future. The theoretical value is the present value of all future free cash flows — every dollar the company will earn, discounted back to today. In practice, this is impossible to calculate precisely, which is why stock prices fluctuate. Investors constantly revise their estimates of future cash flows based on earnings reports, economic conditions, competitive dynamics, and management decisions.

In the short term, supply and demand (sentiment, momentum, flows) drive prices. In the long term, fundamentals (earnings, growth, returns on capital) drive prices. Understanding both timeframes is essential for any trading approach.

How Companies Use Stocks

Raising Capital: When a company first sells shares to the public (an IPO), it receives the proceeds. This money funds growth, research, acquisitions, or debt reduction.

Compensating Employees: Stock options and restricted stock units (RSUs) align employee interests with shareholders. This is particularly common in tech, where a significant portion of compensation comes in stock.

Acquisitions: Companies can use their own stock as currency to buy other companies. If Company A wants to buy Company B for $10 billion, it can issue new shares worth $10 billion and exchange them for all of Company B’s shares.

Buybacks: When a company buys back its own shares, it reduces the total share count, making each remaining share worth more (all else equal). Buybacks have become a massive force in markets — US companies bought back over $800 billion of their own stock in 2023.

GOLDEN INSIGHT

Share Dilution: The Silent Wealth Destroyer

When a company issues new shares — for employee compensation, acquisitions, or fundraising — it dilutes existing shareholders. If a company has 100 million shares and issues 10 million new ones, each existing share represents 9.1% less of the company than before. This is why share count trends matter. A company that grows earnings 10% but dilutes shares by 5% has only created 5% real value for shareholders. Always check whether earnings per share (EPS) is growing, not just total earnings.

TEST YOUR UNDERSTANDING

Stocks Knowledge Check

A company has $1 billion in earnings and 500 million shares outstanding. What is its EPS?

If a company issues 10% more shares while earnings stay flat, what happens to EPS?

Summary

Stocks represent ownership of a business. Common stock gives you voting rights and upside potential; preferred stock gives you fixed income priority. A stock’s value is driven by the company’s ability to generate future cash flows. Companies use stocks to raise capital, compensate employees, make acquisitions, and buy back shares. Share dilution is a real cost — always track earnings per share, not just total earnings. In the long run, stock prices follow fundamentals. In the short run, they follow sentiment.

In the next lesson, we will explore how companies go from private to public: the IPO process — one of the most exciting and dangerous events in financial markets.