What is stock? Learn the basics of investing in a public company (2024)

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  • A stock is an investment that represents a unit of ownership in a company.
  • There are two ways shareholders can earn returns on their investments: capital gains and dividends.
  • Investors can build diversified stock portfolios by investing in stock funds.

What is stock? Learn the basics of investing in a public company (1)


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What is stock? Learn the basics of investing in a public company (3)


A stock is an investment in a company. But unlike private equity investments, which are typically reserved for accredited investors, thousands of stocks are available for anyone to buy and sell on public exchanges like a stock market.

Let's take a closer look at what a stock is, how stock investing works, and the ways that stock investors can make money.

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What is a stock?

A stock, also known as equity, is a security that represents a fractional share of ownership in a company. When you purchase a stock from a company, you become a shareholder, and the small piece you own is called a share.


Investors buy and own stocks in hopes that the company will succeed. When the company does well, its stock owners share in those profits.

Conversely, shareholders can also expect their returns to be diminished if the company underperforms or declines. And in the worst-case scenario, a stock owner's shares could become worthless if the company was to go bankrupt.

How do stocks work?

Companies can issue their stock shares either privately or publicly. While private shares are typically only available to accredited investors, accreditation isn't required to invest in stocks that are traded on public exchanges such as the New York Stock Exchange or Nasdaq.

Private companies "go public" to raise money for business initiatives such as launching new products or services expanding its reach. They do this through initial public offerings (IPOs), where companies are required to meet SEC financial transparency requirements and share price is typically decided by an investment bank. Once the IPO has been issued and the stock begins trading, supply and demand dynamics will move its price up or down.


How to buy and sell stocks

Investors can buy and sell public stocks by opening an account with a stock broker. There are now a large number of brokers who don't charge commissions for stock trades and allow clients to buy fractional shares of stocks.

Investors can instantly diversify their stock holdings by investing in stock funds (ETFs or mutual funds), which allows you to spread your money across a variety of stocks. Some funds are actively managed while others track benchmark market indexes, such as the .

"Stock picking can be a time-consuming activity if done correctly. Therefore, I always advise [investors] to buy an index or ETF such as one on the S&P 500, like VOO, or on any other sector of interest," says Shanka Jayasinha, CIO of S&J Private Equity.

How do stocks offer returns?

There are two primary ways that shareholders can earn returns on their investments: capital gains and dividends.


Capital gains are the profits from when you sell a stock. This happens when you sell it for more than you paid for it.

Dividends are regular payments to shareholders. Each company can set its own dividend schedule but quarterly payouts are most common.

Dividends give investors a means of realizing income without having to sell any of their shares — even during years that the stock price declines. Because of this, dividend-paying stocks are often very attractive to investors who are in or near retirement.

Stock investing vs. stock trading

In contrast to buy-and-hold investors, active traders try to make a profit on short-term fluctuations in a stock's price. While investors may focus heavily on a company's fundamental and long-term prospects, traders tend to rely more on news events and technical analysis to inform their decisions.


If you have the time that it requires to research and manage trades, trading can offer faster returns than investing. However, investing is the way to go if you want to earn passive income on your stock holdings. And if you do decide to dabble in trading, it's important to think through your trade plan before taking any position and stick with it no matter what.

Types of stock

Stocks can be classified in a variety of ways. Below we break down a few of the major types and explain their differences.

Common vs. preferred stocks

There are two main types of stocks: common stocks and preferred stocks.

  • Common stock: As the name suggests, this is the most common type of stock. Common stockholders typically receive quarterly dividends and voting rights. However, those dividends fluctuate and are not guaranteed.
  • Preferred stock:Preferred stocks pay a higher, fixed dividend than common stock, but their share prices don't appreciate as much as common shares do. Preferred stockholders also get paid those dividends before common shareholders, even in the event of bankruptcy.


"If you buy 100 shares of Coca Cola Company stock, you're most likely buying the common stock," says Robert Johnson, a professor of finance at Creighton University. "Common stock, at most companies, accounts for the vast majority of the shares outstanding."

Holders of common stock also "elect the board of directors and vote on corporate issues" explains Anthony Denier, CEO of the trading platform Webull. "The disadvantage is that in bankruptcy proceedings, common shareholders are last in line for the company's assets."

Denier adds that preferred stock offers "stable dividends" and the yields are often "higher than the same company's common stock dividends." And he notes that if the company is running short on cash, "preferred shareholders receive their dividends before common shareholders."

Class A vs. Class B shares

In some cases, companies may sell separate Class A and Class B shares. The major difference between the two is typically that Class B shares will have more voting rights.


For example, co*ke common stock shareholders receive one vote per share, while Class B shareholders receive 20 votes per share. Typically, companies create share classes in this way because they want the voting power to remain with a certain group.

Other stock categories and classifications

Let's say that you're an average retail investor who only has access to common stock. You can filter your stock search in a variety of ways such as by size, industry, style, or location.

One option is to look at the company's market capitalization — or in other words, its size. Some investors may only want to focus on well-established, large-cap companies. Others may want to include small-cap and mid-cap companies which, while often more volatile, could also offer outsized returns.

Companies can also be grouped by industry. Tech, industrials, financials, and consumer staples are just a few industry sector examples. Investing in stocks from a variety of industries helps to improve your portfolio's diversity.


With style-driven investing, you look for stocks that fit in with a particular investing strategy such as growth, value, or dividend investing. And, finally, stocks can be classified by geography. For example, U.S investors may want to broaden their exposure to emerging markets by investing in foreign-company stocks.

What is a blue chip stock?

Large-cap stocks overlap with — but are not exactly the same as — another category of stocks, the blue chips. Large-cap stock strictly refers to the numbers — that market capitalization dollar value the company has. By contrast, blue-chip stocks belong to a more loosely defined group: There's no official or statistical definition.

But generally, they come from mature companies that have demonstrated solid performance over a long period of time — sometimes more than 100 years. They are considered very low-risk and reliable. They often pay good dividends. So blue-chip companies usually also fall into the large-cap category. But not all large caps are blue-chips.

Blue chip stocks share some characteristics:


  1. Largemarket capitalization: Blue chips tend to be large, well-financed corporations. Their market capitalization — that is, the total market value of all their outstanding shares — is in the high billions, putting them in the category of large-capitalization (orlarge-cap) stocks. The least expensive of these large caps enjoy a value of at least $5 billion; most are north of $10 billion.
  2. Growth history: Blue-chip companies display years, sometimes decades, of sustained growth and ongoing prospects. Their share prices rarely jump dramatically, but they can show steady appreciation over time.
  3. Stock index: Blue chips occupy positions in the major market indexes: the Dow Jones Industrial Average (DJIA), the, theNasdaq 100. A company is often seen to have "made it," blue-chip status-wise, if on one of these lists, which act as bellwethers for the stock market itself.
  4. Dividends: While not always a feature, many blue chips pay shareholders a good, steady dividend. As mature companies, blue chips focus less on growth than start-ups and other businesses that need to continually seed development. For blue-chips, the freed up cash flow allows companies to share profits with stock owners through dividend payments. As profit margins grow, the dividends often increase as well.

What is treasury stock?

Treasury stock — also called treasury shares — is stock that a company has bought back from public investors. When a company does a stock buyback, it puts the repurchased shares back under its own control and reduces the supply of shares available in the market. That often boosts the price.

After the buyback, the company can cancel the treasury shares or keep them in reserve for potential reissuance or other uses at a later date.

The amount of treasury stock a company has it can be found in itsbalance sheet. The balance sheet includes the company's assets, liabilities and shareholders' equity. Typically, the amount of treasury stock a company has is included in a line item at the bottom of the equity section, but really it can be included anywhere within the equity section with a debit balance.


While treasury stock isn't something that typically has a direct impact on individual investors, knowing what it is and how it works is important. Companies can use it to protect themselves financially, plan for future mergers or acquisitions, fend off unwanted buyouts, reward employees, or plan for future capital raising needs, among other reasons.

How to make money investing in stocks

When investors are able to take advantage of compounding returns over many years, their profits can increase exponentially. That's why time in the market, rather than perfect timing, is likely to be most important to your success.

"Time is the greatest ally of the investor because of the 'magic' of compound interest," Johnson says.

With this in mind, Johnson recommends that investors "begin investing in a low-fee, diversified equity index fund and continue to invest consistently whether the market is up, down, or sideways."


According to the Schwab Center for Financial Research, the market suffered intra-year setbacks of 10%+ in 10 of the past 20 years, demonstrating the relatively high short-term risk of stock investing. Yet, it finished in positive territory in all but three of those years.

The bottom line on stocks

A stock gives an investor a small ownership share of a company and the stock's returns will generally be based on the company's performance. Investing in stocks is a common way for investors to build wealth for themselves.

However, there are no guarantees. Whenever a public company fails, its stock investors are likely to suffer as well. But the more stocks you own, the lower your risk of taking a big portfolio hit as a result of one wrong stock pick.

Thankfully, you don't need a huge account balance to build a diversified stock portfolio with your broker. Through the use of ETFs, mutual funds, or fractional shares, it's easy to invest in dozens or hundreds of stocks with minimal capital.

Clint Proctor

Clint Proctor is a freelance writer and founder ofWalletWiseGuy.com, where he writes about how students and millennials can win with money. When he's away from his keyboard,he enjoys drinking coffee, traveling, obsessing over the Green Bay Packers, and spending time with his wife and two boys.

I'm Clint Proctor, a freelance writer and founder of WalletWiseGuy.com. My expertise lies in providing valuable insights into personal finance, investing, and strategies for financial success. I've dedicated my work to helping students and millennials navigate the world of money, making informed decisions to build wealth.

Now, let's delve into the concepts discussed in the article you provided:

1. What is a Stock?

  • A stock, also known as equity, represents a fractional share of ownership in a company.
  • Purchasing a stock makes you a shareholder, and the piece you own is called a share.
  • Shareholders hope for company success, and when the company does well, they share in the profits.

2. How Do Stocks Work?

  • Companies issue stock shares privately or publicly.
  • Publicly traded stocks are available on exchanges like the New York Stock Exchange or Nasdaq.
  • Companies go public through Initial Public Offerings (IPOs), raising money for business initiatives.
  • Stock prices are influenced by supply and demand dynamics after the IPO.

3. How to Buy and Sell Stocks?

  • Investors can buy and sell stocks through stock brokers.
  • Many brokers now offer commission-free trades and allow fractional share purchases.
  • Diversification is possible through stock funds, such as ETFs or mutual funds.

4. Ways Shareholders Earn Returns:

  • Returns come through capital gains (profits from selling a stock for more than purchased) and dividends (regular payments to shareholders).

5. Stock Investing vs. Stock Trading:

  • Investors focus on long-term growth and passive income.
  • Traders seek short-term profits based on news events and technical analysis.

6. Types of Stocks:

  • Common Stocks: Offer voting rights and fluctuating dividends.
  • Preferred Stocks: Pay higher fixed dividends, with priority in payment, even in bankruptcy.

7. Class A vs. Class B Shares:

  • Class B shares may have more voting rights than Class A shares.

8. Other Stock Classifications:

  • Stocks can be classified by market capitalization, industry, investment style (growth, value, dividend), and geography.

9. Blue Chip Stocks:

  • Blue chip stocks are from mature companies with a history of sustained growth and steady dividends.
  • They are considered low-risk and reliable, often part of major market indexes.

10. Treasury Stock:

  • Treasury stock is stock bought back by a company, reducing the supply in the market and potentially boosting the price.
  • Companies can use treasury stock for various purposes, such as mergers or acquisitions.

11. Making Money Investing in Stocks:

  • Compound returns over time can lead to exponential profits.
  • Time in the market is crucial for taking advantage of compound interest.

12. Bottom Line on Stocks:

  • Stocks offer investors ownership in a company, and returns depend on the company's performance.
  • Diversification through ETFs, mutual funds, or fractional shares can help mitigate risks.

In conclusion, understanding these fundamental concepts is crucial for anyone looking to navigate the world of stock investing successfully. If you have any specific questions or need further clarification on any of these topics, feel free to ask.

What is stock? Learn the basics of investing in a public company (2024)
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