Picture a coffee shop on your street that is doing well. The owner, Maya, wants to open five more locations, but she does not have the cash and does not want another bank loan. So she does something clever. She splits ownership of her business into 1,000 equal slices and sells some of them. If you buy one slice, you own one thousandth of the business. That slice is a share. That is the entire concept behind a stock. A stock is just partial ownership of a company, cut into pieces small enough that ordinary people can buy them.
When you own a share, you own a real claim on the company. If the business grows and becomes more valuable, your slice becomes more valuable too. If the company pays out some of its profit to owners, you get your cut. And in most cases you get a small say in big decisions through voting. You are not lending the company money and waiting to be paid back. You own a piece of it, for better or worse.
Why companies sell shares in the first place
Growing a company costs money. You need buildings, staff, equipment, and time before any of it pays off. A business has a few ways to fund that. It can borrow the money and pay interest, or it can sell ownership and raise money it never has to pay back. Selling ownership is what happens when a company lists on the stock market.
The trade-off is real. Borrowing keeps the owner fully in control but adds debt. Selling shares brings in money without debt, but the original owner now shares the profits and some of the control with everyone who bought in. When Maya sells 400 of her 1,000 slices, she keeps control with the other 600, but four hundred strangers now own part of her dream and expect it to be run well.
The IPO: where shares are born
The first time a company sells shares to the public, it is called an initial public offering, or IPO. This is the primary market, the moment the shares come into existence and the money actually flows to the company. If a firm sells 10 million new shares at 20 dollars each, it raises 200 million dollars, and that cash goes into the business to build things.
Here is the part that trips people up. After the IPO, the company usually does not get any more money from its shares trading around. Once those shares exist, they get bought and sold between investors, over and over, without the company being involved in each trade. That resale activity happens in the secondary market, and it is what most people mean when they talk about the stock market.
What an exchange actually does
For a resale market to work, buyers and sellers need somewhere to find each other and agree on a price. That is a stock exchange. Names like the New York Stock Exchange and the Nasdaq are just large, well-regulated marketplaces where orders to buy and sell meet. The exchange does not set the price of a share. It simply matches someone willing to sell at a price with someone willing to buy at that price, and records the deal.
The exchange also keeps things orderly and fair. It enforces rules, publishes prices in real time so everyone sees the same numbers, and makes sure that when a trade is agreed, both sides actually deliver. Without that trust, nobody would hand money to a stranger for a slice of a company they may never meet.
So how does the price actually move?
A share price is not handed down by the company or the exchange. It is the result of a constant tug of war between buyers and sellers. If more people want to buy a stock than sell it, buyers compete and nudge the price up. If more people want out than in, sellers compete and the price drifts down. Price is simply the point where a buyer and a seller currently agree to do business.
What changes those crowds of buyers and sellers is expectation. If people believe Maya's coffee chain will keep growing, they want in, and the price rises before the growth even shows up. If a rival opens next door and people worry, some sell, and the price falls. This is why prices react to news, earnings reports, and even rumors. The market is always trying to guess the future, and it is often wrong, which is exactly why prices move so much.
What people mean by 'the market'
When someone says the market went up today, they rarely mean every single stock rose. They usually mean a well-known index, like the S&P 500, moved higher. An index tracks a basket of companies and rolls their performance into one number, so you can talk about the overall mood in a single figure instead of checking thousands of stocks one by one. Indices get their own guide later in this section, but for now, just know that the market is a shorthand, not a literal count of every company.
Putting it together
A company sells shares to raise money. The first sale is the IPO, and that cash funds the business. After that, those shares trade between investors on an exchange, which matches buyers and sellers and keeps the process honest. The price moves as the crowd's expectations shift, and the market as a whole is summed up by indices. Every other topic in finance builds on top of this simple loop.
On YOLFT, when you open a stock and see its price ticking, a chart, and a market value, you are looking at this exact machinery in action: the live result of countless buyers and sellers deciding, right now, what a slice of that company is worth.