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The Order Book widget (also called Market Depth) provides a real-time view of buy and sell orders for a selected instrument. It helps analyze liquidity, track short-term supply and demand, and better understand price pressure near the spread. To choose an instrument, click the ticker icon in the top-left corner of the widget.
Currently, Order Book data is available for instruments from Binance and Bybit.

Widget Structure

The Order Book is split into two sides:
  • Bids — buy orders, shown in green
  • Asks — sell orders, shown in red

Main Elements

  • Price ladder
    • The central vertical scale with price levels
    • Updates in real time as the market moves
  • Liquidity bars
    • Horizontal bars at each price level
    • Show how much volume is resting on bids and asks
  • Volume labels
    • Numeric size values displayed directly on the ladder
  • Spread
    • The distance between the best bid and best ask
    • Represents the nearest executable buy/sell gap
  • Cumulative depth curve
    • A stepped line showing how liquidity builds up further away from the spread
    • Useful for spotting larger liquidity walls

Choosing an Instrument

To change the instrument:
  1. Click the ticker icon in the top-left corner of the widget
  2. Select the market you want to open
At the moment, the Market Depth widget supports order book data from:
  • Binance
  • Bybit

Display Modes

The widget supports two viewing modes:
  • Classic
  • Advanced

Classic Mode

Classic mode is a simplified depth view focused on the current order book. It includes:
  • Bid and ask ladders
  • Price levels
  • Liquidity bars
  • Volume labels
  • Optional cumulative volume view
Use this mode when you want a clean and readable view of current market depth without additional order flow overlays.

Advanced Mode

Advanced mode adds more order flow context on top of the standard order book. In addition to the ladder and liquidity bars, it can display:
  • Recent trades
  • Aggregated trade prints
  • Cluster-based activity
  • Filters for trade size and cluster visibility

What the candles in the middle represent

The marked area in the center of the widget shows trade clusters / recent executed trades, visualized as small candles. These are not regular chart candles from the main Chart widget.
In the Order Book, they represent recent trading activity directly inside the Market Depth view.
They help you see:
  • where trades were executed near the spread
  • whether aggressive buyers or sellers were more active
  • how recent execution activity aligns with visible liquidity
Green candles indicate buying pressure during that cluster period.
Red candles indicate selling pressure during that cluster period.
This makes Advanced mode useful when you want to combine:
  • resting liquidity in the book
  • recent aggressive executions
  • short-term reaction near the current price

Classic and Advanced Settings

Open Market Depth Settings to switch between modes and adjust the widget behavior.

General

  • Classic / Advanced
    • Switch between the two display modes
  • Bid/Ask Ratio
    • Shows the balance between bid and ask liquidity
  • Show Empty Rows
    • Displays price levels even when no orders are present
  • Price Step
    • Groups price levels by step multiplier
    • Example: x1 shows full detail, while larger steps aggregate the ladder
  • Font Size
    • Changes the size of ladder labels and numbers
  • Auto-centered
    • Keeps the spread area centered automatically

Volume

  • Volume Bars
    • Show or hide horizontal liquidity bars
  • Volume Scale
    • Controls how volume bars are scaled
  • Cumulative Volume
    • Enables the stepped cumulative depth curve

Trades (Advanced mode)

  • Aggregation
    • Combines smaller trades into grouped prints
    • Helps reduce noise in fast markets
  • Volume Filter
    • Hides very small trade activity below the selected threshold

Clusters (Advanced mode)

  • Period
    • Defines the time interval used for trade cluster visualization
  • Skip Empty Clusters
    • Hides cluster intervals with no meaningful trade activity

Top-Right Controls

In the top-right corner of the widget, you can find quick controls for depth navigation and display.

Bring spread back to the center

Click the centering icon to bring the spread back to the center. Use it when:
  • you manually scrolled away from the current price
  • the active spread is no longer visible in the middle of the widget
  • you want to quickly refocus on the live market

Price Step Control

Next to the centering button, you can adjust the price step directly from the widget header. This control includes:
  • minus (-) — decrease the step
  • current value (for example 0.01) — shows the active price increment
  • plus (+) — increase the step
This lets you control how detailed the ladder is:
  • smaller step → more detailed price levels
  • larger step → more aggregated view with less noise
Use a smaller step for precise short-term reading.
Use a larger step when you want a cleaner overview of liquidity distribution.

How to Read Market Depth

Use the Order Book to interpret short-term market structure:
  • Large bid walls can act as support
  • Large ask walls can act as resistance
  • Thin liquidity can lead to faster moves
  • Imbalance between bids and asks can indicate directional pressure
Keep in mind that the book is dynamic. Orders can appear, shift, or disappear quickly.

Practical Use Cases

Identify Liquidity Zones

Look for large concentrations of resting orders.
These often define short-term reaction levels.

Watch the Spread

A tight spread usually reflects better liquidity.
A wider spread may indicate thinner conditions or higher uncertainty.

Combine Liquidity and Executions

In Advanced mode, compare:
  • where liquidity is resting
  • where trades are actually executing
This can help confirm whether visible liquidity is being respected or absorbed.

Fine-Tune Entry Timing

Use the order book to improve execution around key price levels, especially in fast intraday conditions.