What Is a Share of Stock? What You Own When You Buy One

Fifty million shares at $30 each comes to $1.5 billion. That figure, the market capitalization, is what the stock market says the whole company is worth today, and one share is one fifty-millionth of it.

A claim on profits and on what is left over

Buying a share makes you a part owner of the company. What you own is a claim. You’re entitled to your fraction of the profits the company earns from here on, and to your fraction of its net assets, meaning whatever would be left if it sold everything it owns and paid off everyone it owes.

That claim has limits worth knowing on day one. The profits don’t land in your account automatically. The board of directors decides how much, if any, to pay out as dividends, and it can keep the rest to reinvest in the business, pay down debt or buy back shares. Kept profits still belong to shareholders in the sense that they stay inside a company you part-own. You just don’t hold them in cash.

The claim on assets also comes last. If a company fails, lenders, suppliers and other creditors are paid first, and preferred shareholders usually come next, so common shareholders get whatever remains. Often that is nothing.

A vote on some matters

Common shares normally carry votes. You can vote on who sits on the board, and on some large decisions such as a merger, usually one vote per share, cast at the annual meeting or by proxy beforehand. You don’t vote on day-to-day decisions. Management runs the business and the board oversees management.

Some companies issue more than one class of common stock with different voting rights, so that founders or insiders keep control while selling shares to the public. The 10-K describes each class. Read that description before you assume your vote counts the same as everyone else’s.

Market capitalization

The share price tells you what one slice costs. To compare companies, you need the price of the whole thing, and that takes one multiplication.

A $30 stock is neither cheap nor expensive on the price alone. A company with 50 million shares at $30 and another with 5 million shares at $300 are both valued at $1.5 billion, so the higher share price says nothing about which business is bigger or better. Market capitalization is also the number you’ll set against earnings when you get to the P/E lesson, since dividing it by a year of profit gives the same answer as dividing one share’s price by one share’s profit.

The price and the business are different things

The share price is what buyers and sellers agree to pay today for that claim on future profits. It moves every few seconds while the market is open. The business moves much more slowly. It sells, pays staff, collects cash and reports four times a year.

Over short stretches the two can drift apart for all sorts of reasons, including interest rates, news about a competitor, a large holder selling, or a change in what investors expect earnings to be, and the job of evaluating a stock is to form your own view of what the business is likely to earn, then ask whether today’s price is a sensible amount to pay for your share of it. The price is the market’s opinion, and the filings are where you check it.

Common and preferred shares

Almost every share you’ll buy through a brokerage account is common stock, and that’s what the rest of the course means by “a share.” Preferred stock is a separate class that sits between lenders and common shareholders. It usually pays a fixed dividend that has to be paid before common holders receive anything, and it ranks ahead of common stock if the company is wound up, but it usually carries little or no vote and rarely shares in the upside when profits grow. It behaves partly like a bond. If a ticker has a suffix or the security name includes “preferred,” check which class you’re looking at before you buy.

Where to find shares outstanding

Open the company’s latest 10-K, which EDGAR serves free. The cover page, the very first page of the filing, states the number of shares outstanding for each class as of a recent date. The balance sheet and the notes to the financial statements also show shares issued and outstanding, usually in the shareholders’ equity section.

The count changes over time. Buybacks shrink it. New shares issued to raise money or pay employees grow it. Use the latest figure you can find, and note its date.

Owning a share means owning a slice of profits you can’t see yet, and those profits live in three reports the company publishes every year, which are the subject of the lesson on the three financial statements. For the wider picture of how analysts turn those reports into forecasts, see where earnings estimates come from.