How Stocks are Bought and Sold
When people talk about “trading on the stock market,” they’re referring to the buying and selling of shares (stocks) in publicly listed companies. This process takes place through stock exchanges, using brokers or online platforms. Here’s how it all works:
Buying Stocks – Step by Step
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Open a Brokerage Account
To buy or sell stocks, you need to use a stockbroker—either a traditional firm or an online trading platform like eToro, CommSec (Australia), Robinhood (USA), Interactive Brokers, or others depending on your country.-
You deposit money into the account.
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Then you’re ready to place trades.
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Choose the Stock
Investors research companies and choose stocks they believe will grow in value or pay good dividends. -
Place an Order
There are different types of orders:-
Market Order: Buys or sells immediately at the best available price.
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Limit Order: Buys or sells only at a specified price or better.
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Stop Order: Becomes a market order once a stock hits a certain price.
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Trade Execution
Once you place the order, it goes to the exchange through your broker and gets matched with someone else who is selling (or buying).-
This usually happens in seconds.
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Selling Stocks
Selling works just like buying—but in reverse:
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You decide how many shares to sell.
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You place a sell order.
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If there’s a buyer at your price, the trade is completed.
People sell stocks to take profits, cut losses, or re-balance their portfolios.
Behind the Scenes – How the Market Works
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The Stock Exchange is where the action happens. Buyers and sellers are constantly trading shares through electronic systems.
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Every stock has a bid price (what buyers will pay) and an ask price (what sellers want).
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The difference between them is called the spread.
When a trade happens, it means someone agreed to buy at the seller’s price or sell at the buyer’s price.
Who’s Involved?
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Retail Investors – Everyday individuals using online platforms.
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Institutional Investors – Banks, mutual funds, hedge funds.
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Market Makers – Firms that help keep trades flowing by always offering to buy or sell stocks, earning money from the spread.
When Can You Trade?
Most stock markets are only open on weekdays during specific hours. For example:
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NYSE/NASDAQ (USA): 9:30 AM – 4:00 PM (Eastern Time)
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ASX (Australia): 10:00 AM – 4:00 PM (Sydney Time)
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Some platforms also offer after-hours trading, but it’s usually riskier due to lower liquidity.
Buying & Selling in Action – An Example
Let’s say you want to buy 10 shares of Apple at $200 per share:
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You place a market order.
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The system finds someone selling 10 shares at $200.
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The trade is matched, and now you own 10 shares of Apple.
If Apple’s price goes up to $240 and you sell, you’ve made $400 profit (10 x $40), not including fees or taxes.