When you start getting serious about trading infrastructure or even building your own brokerage, one thing that’ll keep showing up is liquidity and not just in the broad “market depth” sense. You’ll often hear about buyside liquidity and sell side liquidity, and if you’re not entirely sure what those mean or how they affect execution, you’re not alone.
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A lot of brokers, even seasoned ones, confuse the two, or worse, treat them like buzzwords. That can hurt your risk exposure, pricing model, or execution strategy down the line.
So let’s break it down.
What is Liquidity in Trading? A Quick Refresher
Before we split liquidity into two sides, let’s make sure we’re on the same page. At its core, liquidity is the ability to buy or sell an asset without causing a massive change in its price.
In a highly liquid market like EUR/USD, you can execute large trades with minimal price impact. In an illiquid market, like an obscure altcoin, even a small order can send the price soaring or crashing.
This liquidity doesn’t just appear out of thin air. It exists in the market’s order book as a collection of resting orders. These aren’t market orders that execute instantly.
These are pending orders: buy limits, sell limits, buy stops, and sell stops, all placed by traders and institutions, waiting for the price to reach their specified level. It is these pools of resting orders that create the liquidity zones we are about to discuss.
What Is Buyside Liquidity?
Buyside liquidity refers to the liquidity provided by institutions or individuals placing buy orders. In simple terms, it’s the pool of capital waiting to buy an asset at various price points.
If you’re trading and there’s a sudden surge of buyers, say after a big CPI report or interest rate decision, that spike in demand adds to buyside liquidity.
But the buyside isn’t just retail traders placing market orders. It includes institutional players like:
- Hedge funds
- Prop trading firms
- Asset managers
- High-net-worth individuals using algorithmic strategies
These players aren’t just looking to jump in and out like scalpers. They can sit on large buy orders, often placed in chunks across different levels using iceberg orders or TWAP algorithms.
So when you hear that “buyside liquidity is strong,” it usually means there’s solid demand waiting in the book, either visible or hidden.
How to Identify Buyside Liquidity on a Chart
To spot these zones, look for obvious areas of support or clear swing lows. A “double bottom” or a trendline that has been respected multiple times are prime locations for buyside liquidity to build up.
Again, think about the crowd’s behavior. Everyone who bought at or near that support level has their protective sell stop order sitting just below it.
Breakout sellers who want to short the breakdown also have their sell entry orders clustered in the same area. This creates a rich pool of sell orders just begging to be triggered.
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What Is Sell Side Liquidity?
Now flip that. Sell side liquidity is the supply, the sell orders stacked at different price levels, often coming from banks, market makers, or other liquidity providers. This is what’s available to buy from when someone hits the bid.
Sell side participants are typically:
- Prime brokers
- Liquidity providers (LPs)
- ECNs and market makers
- Centralized exchanges (CEXs) for crypto assets
If you’re running a brokerage, this is the side you’re probably integrating with. You’re pulling from sell side liquidity to fill client buy orders. That’s why having Tier 1 LP connections matters, tight spreads and low slippage often come down to how deep and reliable your sell side liquidity is.
How to Identify Sellside Liquidity on a Chart
You can start to train your eye to see these zones. Look for obvious areas of resistance or swing highs on your chart. A classic “double top” or a clear horizontal resistance line that has been tested multiple times is a perfect example.
Think about the psychology at that level. Everyone who is shorting that resistance has their stop loss just above those highs.
At the same time, every breakout trader has their buy entry order sitting in the exact same spot. This creates a very dense and attractive pool of buy orders (sellside liquidity) just waiting above that price level.
What Happens When Buy-side Liquidity Is Swept?
Sweeping buyside liquidity means price temporarily breaks above the resistance level where those buy stops rest. This triggers short-covering buys and new buy orders, which can drive prices significantly higher in the short term. However, savvy traders know this move might not be genuine strength but a strategic liquidity hunt by institutions.
Once the liquidity has been captured, the price often reverses or consolidates as the market digests the order flow imbalance.
This misleads many retail traders into thinking a breakout is underway when it might be a setup for a retracement or a more calculated move by larger players.
How This Affects You as a Broker
If you’re planning to build your own brokerage, understanding the dynamics between buyside and sell side liquidity helps you in:
- Choosing liquidity providers wisely – avoid shallow books.
- Designing smart routing systems – consider using bridge software like OneZero, PrimeXM, or Gold-i.
- Setting realistic spreads – tighter spreads are attractive, but if there’s not enough liquidity behind them, your clients get filled at worse prices.
- Managing slippage and execution complaints – most traders won’t complain about price, they complain about speed and execution quality. That’s often due to poor liquidity.
Also, you want to log and analyze which side of the book your clients are hitting most often. If they’re aggressive buyers, your LP setup needs strong sell side liquidity. If they’re breakout traders hitting the offer, your infrastructure must handle that heat.
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Start Your Own Forex Brokerage with Deep Liquidity Access
If you’re looking to build your own brokerage with access to both deep buyside and sell side liquidity, you don’t have to go it alone.
Start your own forex broker with TurnkeyInside
We’ll help you connect to Tier 1 liquidity providers, set up MetaTrader infrastructure, and design a robust execution model that minimizes slippage and maximizes your P&L efficiency. Let’s talk about how to make your brokerage both competitive and compliant.
