Are brokers really messing with your price feed?

Well… sometimes yes. But it’s not what you think.

A lot of traders worry that their broker might be messing with prices. And honestly? That’s a valid concern.

Most brokers do have reasons - and even tools - to tweak the price feed they get from their liquidity providers before it shows up in your trading terminal and triggers your pending orders.

Let’s break down the main reasons brokers might do this:

Let’s say a liquidity provider sends a very wide (or WILD!) spread for EUR/USD. If under normal market circumstances EUR/USD spread is way below 1 pips, during news announcements it can become 60-80 pips.

The broker might tighten that spread before showing it to you. Why? Because a huge spread scares traders away. They want the feed to look "tradable".

Another reason: if there are too many stop-losses triggered or stop-outs caused - there will be a lot of unhappy customers. It’s easier to give them a more narrow spread than deal with their complaints and bad publicity - even if brokers don’t generate price feeds and get them from liquidity providers!

This is the spread brokers receive from their liquidity providers sometimes:

And this is how brokers make the price feed look like by using “maximum spread” setting:

Every now and then, there’s a random price spike - a non-market price that flashes for a split second.

Imagine you have an asset that’s traded at about 10-12 - and then all over the sudden the price of 90 appears once! And after that it’s back to 11-13.

If that glitch hits your stop-loss or causes a stop-out for your account, you’re going to be mad. To avoid drama, brokers often filter these out and pretend they never happened. It’s kind of like saying: “Let’s not even go there.” In order to help keep spikes away trading software usually has a built-in feature called “spike protection”.

This is the price feed brokers receive sometimes:

And this is how the price feed looks like after brokers remove the price that appears to be a spike:

Sometimes price updates come in too fast - like 50+ ticks per second on some instruments under certain circumstances (news announcements, for example). If a trading server tries to process every tick for every client, it might just… crash. So brokers limit the frequency of price updates (a.k.a. throttle the price feed) to keep things stable and - you guessed it right! - they have special functionality for it built by software providers.

If a broker is streaming prices for products that are traded at an exchange (like for CFDs on stocks), the exchange might require that the prices be slightly modified and produce so called “original work”. And not just “slightly” - usually the requirement is: “to such an extent that it can’t be traced back or reverse-engineered or used as a substitute for the underlying input data”.

Believe it or not, some of this comes from government regulations. For example, back in the day in a country that decided to regulate forex markets, brokers had to make sure the bid price didn’t change without the ask changing too. Brokers had to code special logic just to keep the regulators happy.

There’s even a feature in some platforms called “throw the price into the feed.” Basically, if the main data stream fails, brokers can inject prices manually to keep the chart alive. To be honest, it’s hard to imagine large brokers with hundreds of instruments doing that, but still - functionality is there.

Here’s where it gets juicy. Traders often suspect that brokers are deliberately manipulating prices just to trigger their stop-losses.

While this might sound shady and conspiratorial, for large brokers, it doesn’t really make sense:

So the question becomes: Why risk reputation online just to mess with a trade that would probably lose anyway?

Yes - brokers can and do tweak price feeds.

But often, it’s more about protecting clients from bad trading experiences, avoiding complaints from them in social media and even third parties’ requirements than some evil masterplan.

And while you should definitely be alert as a trader, don’t assume every stop-loss hit is a personal attack. Sometimes, it’s just the market doing its thing