How buying actually work

3 min read Published Editorial standards
An orange life ring on a wooden wall, like the stop-loss order that saves a trade
Jump to section
  1. Market order: buy now, at whatever the price is
  2. Limit order: only at the price you choose
  3. Stop-loss order: your seatbelt
  4. Three words you will see everywhere

Module 6 of 12 · Trading From Scratch

Buying a stock is not one single button that says “buy.”

When you place a trade, you are really sending the platform an instruction, called an order, and there are a few kinds.

Knowing three of them is enough, and one of the three may save you more money than anything else in this course.

Market order: buy now, at whatever the price is

A market order says: buy or sell right now, at the current price, whatever it happens to be. It is fast, and it almost always goes through immediately.

The trade off is that you do not control the exact price.

If a stock is bouncing around $50, your market order might fill at $50.05 or $49.97. In most calm situations that tiny difference does not matter. A market order trades a little price precision for speed and certainty.

Limit order: only at the price you choose

A limit order says: only buy if the price drops to $48, otherwise wait. You name your price, and the platform sits patiently until the market reaches it.

Say a stock is at $50 but you think $48 is a fairer entry. You set a limit order at $48. If the price dips to $48, you are filled. If it never dips, nothing happens and you simply do not buy.

A limit order gives you control over the price, at the cost of maybe never getting filled at all.

Stop-loss order: your seatbelt

This is the important one. A stop-loss order says: if the price falls to a level I choose, sell automatically and get me out. You set it the moment you buy, while you are calm, and then it protects you whether you are watching the screen or fast asleep.

Here is why it matters, with numbers:

  • You buy a stock at $50.
  • You decide in advance that if it falls to $45, you were wrong. So you set a stop-loss at $45.
  • The price slides to $45. The stop-loss sells automatically. Your loss is capped at $5 a share, and you move on with your day.

Now picture the same trade with no stop-loss. The price hits $45 and you tell yourself it will bounce back. It hits $40 and you freeze. It hits $30 and you finally sell in a panic, six times the loss you originally planned for.

A stop-loss turns a disaster into a small, survivable scrape, and it does it without asking your frightened brain for permission. Serious traders set one on every single position.

Three words you will see everywhere

While we are here, three quick pieces of vocabulary:

  • Position is just something you currently own or have a bet on. “I have a position in that stock” means “I currently hold some of it.”
  • Long means betting the price goes up. That is normal buying, and it is all you need for now.
  • Short means betting the price goes down. It is more advanced and riskier, so set it aside for later.
Pip, offering, palms up

Pip says:A stop-loss is a seatbelt. Nobody ever bragged about a seatbelt, and everybody still in the game is quietly wearing one.

So, three orders. A market order to get in or out now. A limit order to wait for your price. And the stop-loss, the seatbelt you set on the way in, that decides your worst case before fear gets a vote.

If you remember only one thing from this module, remember the stop-loss.

The traders who survive are not the ones who are right the most. They are the ones whose losses were always small.

Previous: Investing versus trading · Next: Reading the squiggly charts

Found this useful? Save it for later.

Add a comment

Your email address will not be published. Required fields are marked *