Once upon a time, two frenemies, Batman and Spider-Man, were hanging out.

They were lounging on the couch watching a movie, Justice League (Snyder’s Cut), but after a couple of hours, their attention span started to drift.

Even Batman began to get annoyed at watching himself as his character onscreen constantly growled in a low, deep voice due to his bitterness of not having innate superpowers like the others.

A Game

All of a sudden, Spider-Man jumped to his feet and with excitement, shouts:

Yo Bruce!

Call me Batman!

Whatever Bruce. Anyways, I have a fun idea!

Oooh!  I like fun! What is it?

Let’s play a guessing game on whether the price of something will go up or down.

A guessing game? You spiders are so clever.

Dude I’m not a spider. I just acquired spider-related abilities after a bite from a radioactive spider. There’s a difference. Just because I wear a spandex suit with a spider symbol doesn’t mean I’m actually a spider.

Sure, whatever. My Batsuit is still better. It accentuates my nipples, and my absolutely chiseled set of abs. Anyways, I’m interested. Not only am I wealthy, but I’m brilliant. My conjectures always turn out correct. Please elaborate on the details of this game.

The game works like this: Try to guess if the GBP/USD exchange rate will go up or down. Let’s say the current exchange rate is 1.4000. Do you think it will go up or down?


Batman doesn’t trust spiders. He unlocks his Batphone and looks up the current GBP/USD exchange rate on Google and confirms that it is 1.4000. He wants to make sure Spider-Man isn’t just pulling numbers out of his spider butt.

I think it will go up.

Oh really? Let’s make a bet then.

What kind of bet? How will it work?

If GBP/USD goes up, I’ll pay YOU the difference between its price right now and whatever the price is when you decide to close the bet. But if GBP/USD goes down, you’ll pay ME the difference. Payouts will be in cash. Also, you can close the bet whenever you want. What do you say?

Let’s do it! I’ll take that bet.

Let’s Do It Again

Batman is now long 1 unit of GBP/USD at 1.4000. This means that a 1 pip move equals $0.0001.

One hour later, Spider-Man mentions to Batman that GBP/USD has risen to 1.4100. It has gone up 100 pips.

Yo Dark Knight, the exchange rate has gone up 0.01 or 100 pips.

Batman checks his Batphone and lo and behold, GBP/USD has indeed risen to 1.4100.

Not sure how long this price will hold up. I’m out. Let’s close the bet.

At the start of the bet, GBP/USD was at $1.4000. And at the end of the bet, GBP/USD was at $1.41000. So the difference is $0.01 or 1 cent.

Gosh darnit. My “spidey-sense” doesn’t seem to work on the forex market. Looks like I lost. Your payout is $0.01. Don’t spend it all at once.

Spider-Man tosses Batman a penny.

A New Game

Batman gladly accepts the money and after having some greedy thoughts, says:

All I made was $0.01 profit. That type of tiny profit might be good enough for a spider, but not for a bat. If I had only made a bigger bet, I could’ve made a lot more money and become even wealthier.

Okay, Mr. Spoiled Bratman, let’s make the same bet. But this time, instead of betting 1 unit worth of GBP/USD, let’s bet 10,000 units of GBP/USD!

But I’m not carrying £10,000 worth of dollars! My Batsuit is too tight. It’s like wearing black skinny jeans that cover my entire sexy body.

Oh. And here I thought you were rich. How much money do you have on you?

Is It a Good Bet

Batman checks his Batwallet.

I have $20. Excluding the penny that I just won from you.

No problem Batsy. How about we just pretend that I’ve loaned you the entire amount. This way, for every 1-pip move, you’ll gain $1. This means if GBP/USD goes up 100 pips again, instead of making $0.01, you’ll make $100!

I don’t trust dudes who wear tight black suits with capes so I’ll use your $20 as collateral to cover the initial risk if the price falls and moves against you.

Think of it as a security deposit. If you win the bet, you’ll get it back.

If GBP/USD starts to fall, rather than pay up, you might decide to jump in your Batmobile and leave. I don’t want to end up empty-handed so holding your $20 as collateral will protect me. If you try to leave without paying, your $20 will be forfeited to me.

Also, if the price falls more than 20 pips, you don’t have any more cash to cover any losses beyond that, so I’ll automatically close the bet and keep your $20.

As long as the price doesn’t fall below 20 pips, which is the value of your collateral ($20), the bet remains open until you tell me to close it.

Okay. Sounds good. But what about you? Are you sure you can pay up this time if I win again?

Is This Evil?

Spider-Man flashes an evil grin.

Of course. I’m an Avenger. You can trust me.


Fantastic. Let’s begin!

Batman checks his Batphone and verifies that the current GBP/USD exchange rate is 1.41000.

I’m betting that it’ll go up from 1.4100, its current price. Here’s my $20 to open the bet.

Spider-Man suddenly senses GBP/USD will continue to rise so he tries to stall by pretending not to hear Batman.

Hello? Did you hear me? Unlike snakes, spiders aren’t deaf. Here’s my $20 to open the bet.

What was that? So you do want to open a bet? My price for GBP/USD has changed. It’s at 1.4150 now. You still want to make the bet?

Dude, what the hell. I thought you said GBP/USD was at 1.4100. Now you change the price all of a sudden?

That’s my new price. So are you in? Better hurry, before I change my price again.

Fine. I’m in. I bet it’ll go up from 1.4150.

Batman is now long 10,000 units of GBP/USD at 1.4150. A 1 pip move equals $1.

A couple of hours later, Spider-Man announces that GBP/USD is now trading at 1.4350.

GBP/USD has gone up by 200 pips.

I’d like to close the bet now.

At the start of the bet, GBP/USD was at $1.4150. And at the end of the bet, GBP/USD was at $1.4350. So the difference is $0.02 or 200 pips.

But since the bet size is 10,000 units, Spider-Man’s payout to Batman is $200 ($0.02 x 10,000).


Sugar! Looks like you won the bet again! It’s gone up by 200 pips, which means you won $200.

With the imaginary “10,000 units” that Spider-Man conjured up, Batman has made $200.

Spider-Man pays him $200 out of his own pocket and also returns the original $20 (that was used as collateral).

With just $20, Batman won $200. A 10x return!

Let’s play again. I think GBP/USD will continue to….

Damnit. The Bat-Signal! BRB!

Twenty minutes later…

Let’s play again. I think GBP/USD will continue to go up. But I want to increase my bet size to 100,000 units.

Oh we got a whale over here! Looks like someone wants to trade bigger. You sure you don’t want me to call you Whaleman? Batwhale?

Okay, I can increase my imaginary loan to you.

My price for GBP/USD is 1.4300. But this time, since your bet size is bigger, I’ll need $200 from you as collateral.

Batman hands Spider-Man the $200 he just won.

Batman is now long 100,000 units of GBP/USD at 1.43000. This means that a 1 pip move now equals $10.

Quick Change

A couple of minutes later, GBP/USD has fallen to 1.4295, a drop of 5 pips.

GBP/USD is now down 5 pips. That means you have an unrealized loss of $50 (5 pips x $10).

If you want, I can close out the bet now and take $50 from your collateral as payment and return the remaining $150 to you.

Hell no! Don’t be a pest! I still believe GBP/USD will go up. The bet stays open!


Five minutes later, GBP/USD plummets.

The price of GBP/USD has quickly dropped to 1.4275. You’re now down 25 pips. This means you have an unrealized loss of $250. Since your collateral ($200) isn’t enough to cover this loss, I’ve closed the bet and your collateral is now mine. Thanks for the $200!

In this simple story, there’s a lot to unpack.

For example, notice how Spider-Man:

  • literally, creates a “guessing game” from his mind where you could make bets on the direction of the price of anything and make money if your prediction is correct?
  • can make up any price he wants.
  • can move his price at any time, even when Batman is about to open his bet.
  • is always taking the other side of the bet? And nobody else?
  • can make up any bet size he wants regardless of whether Batman has enough money.

A Metaphor

This story on how do forex brokers work provides a lot of hints on how trading with a retail forex broker work.

In case it wasn’t obvious, Batman is you, the trader. While Spider-Man is the forex broker.

Notice how Spider-Man or Batman didn’t actually own any British pounds.

No actual quids were ever exchanged. They were simply making dollar-denominated bets on the price fluctuations of GBP/USD.

With retail forex trading, you don’t take ownership of the currencies.

You’re basically making a bet with your forex broker on whether the price of a currency pair will rise or fall.

The payout is the difference between the price when the bet was made and when the bet was closed.

Either you or the broker will have to pay the difference depending on who ends up wrong.

The risk here for you is that your forex broker defaults or doesn’t have the money to pay for any profits that you’ve made.

More of the Story

Let’s return to the story and see how this could happen.

The next day, Batman and Spider-Man meet up for breakfast.

After finishing their avocado toasts topped with chopped almonds and a drizzle of smoked olive oil, Batman stares deeply into Spider-Man’s eyes and says:

Let’s play that guessing game again. I think GBP/USD will go up today. My bet size will be 100,000 units.

Okay. My GBP/USD’s price is 1.4300. I’ll need $200 from you again as collateral.

Batman hands Spider-Man $200.

Leveraged Trading

If you didn’t notice, Spider-Man magically created a 100,000 unit position size and required just $200 of “margin”. This is an example of leveraged trading.

One hour later, Batman asks for the current price of GBP/USD.

GBP/USD is now trading at 1.4600.

Booyah! GBP/USD has gone up 300 pips! At $10/pip, I’ve made $3,000 in profit! I’m gonna buy me a new Batboat.

Uh, congrats bro, but we have a problem.


I can’t pay up. I don’t have the money.

What do you mean you don’t have the money?! But you took the bet!

I did. But I didn’t think I’d lose. The only money I have is the $200 you gave me as collateral. I can give you back that.

WTF?! What about my $3,000 payout?!

Spider-Man looks up and points to the sky….

Look at that! It’s the Bat-Signal!

Batman looks up and sees nothing. When he looks back down, he discovers that Spider-Man is gone!

Going Bust

In this scenario, the “house went bust”.

Spider-Man took the opposite of Batman’s bet but didn’t have the capital to fulfill his obligation to Batman.

This is known as “counterparty credit risk” (Can the other party of a transaction pay?).

When you open a trade with your forex broker, you and the broker become counterparties of the trade.

Just like Spider-Man, the broker takes the opposite side of your bet.

Are you sure it’s able to fulfill its obligation to you?

While your broker makes sure that you can pay if it wins (and you lose), it’s also important that you make sure that your broker can pay up if you win (and it loses)!

Spider-Man also vanished without returning the $200 that was used as collateral so Batman also ended losing all of the funds that he gave to Ant-Man.

Spider-Man ran (jumped?) away with Batman’s money never to be seen again until his next movie.

Legitimate Forex Brokers

Legitimate forex brokers would prefer to stay in business, rather than go bust or disappear with your funds. Unlike shady Spider-Man, they do have ways to manage this risk.

In a later lesson, we’re going to look under the hood and explain to you what actually happens when a forex broker executes your orders. You’ll learn how forex brokers manage their risk so they don’t go bust.

But this is just one (of several) things to carefully consider when choosing your forex broker.

In order to properly evaluate how do forex brokers work, it’s important to know how a typical retail forex broker operates so here’s what we’ll cover: