Brokerages, accounts, and how a trade actually happens
A clear beginner guide to what a brokerage is, the common account types, and the path an order takes from your click to a real fill.
Part of the Investing Foundations track on Agenticks. About 9 minutes, written for a beginner reader.
You have heard that you buy stocks and ETFs, but where does that actually happen? You do not walk onto an exchange floor and shout. You go through a middleman called a brokerage. This lesson covers three things in plain terms: what a brokerage is, the account types you will run into, and what really happens between the moment you tap buy and the moment the shares land in your account.
A brokerage is a company that lets you buy and sell investments. It sits between you and the exchanges where trades match, like the New York Stock Exchange or Nasdaq. You cannot place a single trade without one. Brokerages differ in their fees, which investments they offer, the account types they support, and the tools they give you. Some are full-service firms with advisers; most beginners use a self-directed online broker where you place your own orders through an app or a website. Picking one is one of the first practical steps in investing, and it is a decision you can change later by moving your account elsewhere. The brokerage also holds your assets for you, keeps the record of what you own, and reports your activity for tax purposes.
The brokerage is the company, the account is your space inside it
Think of the brokerage as the building and the brokerage account as the room you rent inside it. The account is where your cash and your holdings live and where your orders get placed. One brokerage can offer you several account types, each with its own rules.
Most beginners run into a few account types. A taxable account, sometimes called a standard or individual account, is the most flexible: you can deposit, invest, and withdraw whenever you want, but gains and dividends can be taxed in the year they happen. A retirement account, like an RRSP or TFSA in Canada or an IRA or 401(k) in the United States, comes with tax advantages in exchange for rules about when and how you can take the money out. A margin account lets you borrow money from the broker to invest, which raises both the potential gain and the potential loss. None of these is the right one for everyone. The point here is just to know the words, so the choices are not a mystery when you open an account.
Now the part most people never see: what happens after you click. Your order does not teleport into a stock. It travels a short path, and a few checks and matches happen along the way. Understanding that path makes terms like order type, fill, and settlement stop feeling like jargon.
An order is a request, not a guarantee
When you place an order you are asking to trade, not forcing a trade to happen. Whether it fills, and at what price, depends on the order type you chose and on whether someone on the other side is willing to trade with you right now.
The two order types you meet first are the market order and the limit order. A market order says fill me right now at the best price available. It almost always trades, but the exact price can move a little while it executes, especially in a fast or thin market. A limit order says only fill me at this price or better. It gives you control over the price, but it may not fill at all if the market never reaches your number. There is no free option here: a market order trades price control for speed, and a limit order trades speed for price control. A simple way to remember it: use a market order when getting in or out matters most, and use a limit order when the exact price matters more than certainty of trading.
You place a limit order to buy at 50.00, but the price never drops below 50.40 all day. What happens? The order does not fill, because the market never reached your limit price A limit order only fills at your price or better. If the market stays above 50.00, there is no fill. That is the tradeoff: price control, but no guarantee of a trade.
Put the path of a real order in the order it actually happens, from your click to the shares being yours.
- You place the order and pick an order type
- The brokerage checks you have enough cash or buying power
- The order is routed toward an exchange or market maker
- The order matches against a willing seller and fills
- The trade settles and the shares appear in your account
- Routing
- Sending your order toward a venue where it can be matched
- Fill
- Your order actually trading against someone willing to take the other side
- Settlement
- The back-office step that finalizes cash for shares
- Buying power
- The amount you are actually able to invest right now
market limit fill
You can follow a trade from click to fill
You now know what a brokerage is, the common account types in plain terms, and the path an order takes from your click through routing, matching, and settlement.
Common questions
- What is a brokerage in simple terms?
- A brokerage is a company that lets you buy and sell investments like stocks and ETFs. It connects your account to the exchanges where trades actually happen, so you cannot place a trade without one.
- What is the difference between a market order and a limit order?
- A market order fills right away at the best price available, trading price control for speed. A limit order only fills at a price you set or better, trading speed for price control, and it may not fill at all if the market never reaches your price.
- What happens after I click buy?
- Your brokerage checks that you have enough cash or buying power, routes the order toward an exchange or market maker, the order matches against a willing seller, and the trade settles. Then the shares show up in your account.
Terms defined in this lesson
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