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What Is a Stock?

How stocks work and you earn from them. 

​You’ve heard the word your whole life.

Maybe it’s a friend talking about Nvidia. Maybe it’s somebody on TikTok showing off an account that’s worth more than your car. Maybe it’s that one coworker who suddenly won’t stop talking about investing every lunch break.

 

And somewhere along the way you’ve thought:

“I should probably know what a stock actually is.”

Last Updated: June 24, 2026 at 9:01 p.m. MST | 10 min read | Written and reviewed by the Capital Corner Editorial Team

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Owning a Stock Means Owning a Piece of the Company

A stock is a small piece of ownership in a real company. When a company wants to grow, it needs money — maybe to open stores in more cities, launch a new app, or hire more people to keep up with demand. One way to raise that money is by selling small pieces of the company to investors. Those pieces are called shares. When you buy a share, you become a part-owner of that business.

It’s a bit like a local restaurant bringing in a business partner so they can afford to open a second location. The owner gives up a small piece of the business today in hopes of building something bigger tomorrow.

Think about the companies you already use every day. Maybe it’s Apple, whose phone is probably in your hand right now. Maybe you love your Lululemon outfits, stay at Airbnbs, can’t go without your Starbucks, or you love your dog and shop at Pet Valu. Those companies have shares that everyday people — people exactly like you — can buy.

Why Do People Buy Stocks?

Buying a stock is simply a way of saying: “I think this company is going to keep doing well, and I want to own a small piece of it.” You’re not buying a lottery ticket. You’re buying ownership in a business you actually believe in. And instead of just being a customer, you become an owner too.

How Do You Actually Make Money From Stocks in Canada?

There are two main ways.

The first one is simple. You buy a share for $50. The company does well. A year later that share is worth $80. You sell it. You just made $30. That’s called a capital gain.

The second way is that some companies will actually pay you just for owning their shares. A few times a year, a little deposit shows up in your account. You didn’t sell anything. You didn’t do anything. You just owned the shares and they sent you a cut. That’s called a dividend — and for a lot of people, it’s one of the biggest reasons they want to own stocks in the first place.

You may have heard the term blue-chip stocks. The name comes from poker — blue chips are the highest value ones at the table. In investing, same idea. Think RBC, TD, Apple, Nike, Coca-Cola — huge, well-known companies that have been around forever and aren’t going anywhere. That’s a blue-chip stock. Big. Stable. Proven.

How Much Money Do I Need to Buy Stocks in Canada?

You don’t need thousands of dollars to get started. You don’t even need hundreds.

Most of us put off investing because we think it’s something we’ll do later. After the student loans. After the promotion. After we move into a better apartment. After life finally settles down. The problem is life never really settles down.

Many Canadian investing platforms require no minimum to get started. You can begin with $10, $25, even $50 — whatever works for you right now.

Where Do Canadians Buy and Sell Stocks?

You can’t just walk up to a company and say “I’d like to buy a piece of that please.” There’s a system for it. In Canada, most stocks are bought and sold on something called the TSX — the Toronto Stock Exchange. Think of it like a farmers market, but instead of vegetables, people are buying and selling pieces of companies. There are buyers. There are sellers. And everything happens through your investment account — if you haven’t opened one yet, we walk you through it in [How to Open an Investment Account in Canada].

And for most Canadians just starting out, those stocks should be inside a TFSA — so any gains you make aren’t taxed. [What Is a TFSA in Canada?]

Do I Need to Understand the Stock Market to Invest?

No. A lot of people think buying a stock means spending the rest of your life staring at charts, watching financial news, and checking your account every ten minutes. It doesn’t.

You already have enough on your plate. You’re working, trying to keep up with life, and your laundry has been sitting in a basket longer than you’d like to admit.

But that doesn’t mean you should buy a stock just because a friend mentioned it, somebody on social media is excited about it, or it’s all anyone seems to be talking about this week. Before you buy a stock, turn off the noise. Take a few minutes to understand what the company does, how it makes money, and why you believe it has a good future ahead of it.

You don’t need to become a stock market expert. You just need to know what you’re buying.

What Affects a Stock Price?

You already understand more about the stock market than you think.

Remember when groceries suddenly got way more expensive and everyone was talking about inflation? Companies felt that too. People started spending differently, cutting back, making different choices. That changes how a company does. When things change, the stock price changes.

Or think about when a brand you love drops something new and everybody loses their mind over it. That excitement is real — and it usually shows up in the stock price too.

And it works the other way too. Bad news — a product recall, a big lawsuit, a PR nightmare — can send a stock dropping fast. You’ve probably noticed that every time Elon Musk opens his mouth, Tesla’s stock moves — sometimes up, sometimes down.

You’re already paying attention to this stuff every day. You just didn’t know it had anything to do with investing.

Why Do Stock Prices Go Up and Down?

Stocks go up. Stocks go down. That’s normal.

Imagine you finally buy your first stock. You do your research. You hit Buy. You feel pretty good about it. Then Monday morning you log in and you’re down 8%. Your stomach drops. Did you make a mistake?

Stock prices move every day — sometimes for reasons that have nothing to do with the company itself. A war breaks out. Interest rates change. Investors get nervous. Markets react. The company could be exactly the same business it was on Friday and still have a lower stock price on Monday.

That’s why patience matters.

Can You Lose Money Buying Stocks in Canada?

Yes, you can lose money buying stocks.

Not every company makes it. Some struggle. Some shrink. Some disappear completely. And if a company fails completely, you could lose the money you put in.

The risk is real.

You may remember the excitement around GameStop, the ups and downs of cryptocurrency, or the market swings during COVID. Prices can move quickly, and sometimes investors lose money.

That’s why it’s important to understand what you’re buying.

What’s the Difference Between a Stock and an ETF in Canada?

A stock is ownership in one company. An ETF is ownership in a bunch of companies.

Think of it like ordering food. Buying a stock is choosing one item from the menu. Buying an ETF is like sitting at a buffet. With a stock, your success depends heavily on that one company. With an ETF, your money is spread across many companies at once.

A lot of people actually do both. They start with ETFs and then add a few individual stocks they really believe in.

For a deeper look at how the two compare, see our article: [ETFs vs Individual Stocks: Which Is Right for You?]

 

Should I Buy Stocks in Canada?

Maybe.

At some point, most investors ask the same question.

You’ve started saving some money. You keep hearing that investing is important. You know you probably shouldn’t leave all of your money sitting in a savings account forever.

Maybe you start thinking about the companies you spend money with every week. Maybe every package arriving at your door comes from the same place. Maybe every conversation about technology seems to come back to the same companies.

At some point, you start wondering:

“Should I buy these stocks?”

The answer depends on one thing.

Are you willing to do a little homework?

You don’t need to read stock charts all day. You don’t need to follow financial news every morning. And you don’t need to become a stock market expert.

But before you invest your money, you should understand what the company does, how it makes money, and why you believe it has a good future ahead of it.

A stock is ownership in a company. If you’re going to become an owner, it’s worth spending a little time learning about the business first.

If that sounds reasonable to you, then buying stocks may be worth exploring.

Bottom Line

A stock is a small piece of ownership in a real company. When that company does well, your piece of it becomes more valuable too.

You don’t need to understand every stock. You don’t need to watch financial news all day. You don’t need thousands of dollars to get started. You just need to understand what you’re buying and why you’re buying it.

Everything else builds from there.

Get Started Today

  • Think of three companies you already use regularly

  • Ask yourself why those companies are successful

  • Open an investment account if you haven’t already — we walk you through it here: [How to Open an Investment Account in Canada]

  • Learn how dividends work and how they can pay you just for owning a stock: [What Are Dividends?]

  • Ready to compare stocks and ETFs side by side? [ETFs vs Individual Stocks: Which Is Right for You?]


 

Frequently Asked Questions

Q: How do I know if a company is actually worth buying stock in?

 

A: Start with what you already know. Do you use their product or service? Do you think people will still need what they’re selling in five or ten years? Then do a quick check on Yahoo Finance — look at whether revenue and net income have been growing year over year.

 

You’re not looking for perfection. You’re looking for a business you understand that’s been consistently making money.

 

Our article How to Choose a Stock in Canada walks you through exactly what to look for before you buy.

 

Q: Do I pay tax on stocks inside a TFSA in Canada?

 

A: No — that’s one of the biggest advantages of using a TFSA. Any profit you make when you sell a stock inside your TFSA is completely tax-free. Same goes for dividends — if the company pays you just for owning the stock, that money comes to you tax-free inside a TFSA.

 

Outside a TFSA, you’d pay tax on capital gains and dividends. This is why most Canadians should hold their first stocks inside a TFSA.

 

Q: Should I be investing in stocks if I still have credit card debt?

A: If your credit card is charging 19–20% interest, pay that down before you buy a single stock. Getting a guaranteed 20% return in the market is basically impossible — so every dollar you put against that balance beats almost any investment you could make right now. Once the high-interest debt is gone, stocks are absolutely worth exploring. Paying off credit card debt is the better investment.

 

Our article How to Pay Off Credit Card Debt in Canada walks you through where to start.

 

This article is for general informational purposes only and does not constitute financial or investment advice. Always do your own research before making any investment decisions. Capital Corner may earn a commission if you apply for a product through a link on this page — at no extra cost to you.

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