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Ask Bid Pulling & Stacking Study

The Ask Bid Pulling Stacking study monitors the market liquidity / available orders over up to 15 Ask and Bid price levels in the DOM. The recorded values are displayed using upto 3 subgraphs, depending on the configuration of the study.

The study is summarised in the following update post – Ask Bid Pulling & Stacking.


  • For this study to function, a trading DOM with a symbol corresponding to the main price graph must be open and have the Bid/Ask Market Depth Pulling/Stacking column added, as described in the Sierra Chart documentation – Customize Chart/Trade DOM Columns.
  • Data is recorded by the study each time the chart is updated (according to the Chart Update Interval) and remains persistent in the memory until the the chart symbol is changed, or the application (or chart) is closed, the data is not permanently saved. In addition, the chart update interval should be set to a value lower than the Bar Duration.
  • This study can only be used on charts with a chart data type of ‘Intraday Chart
  • It is recommended to use ‘Intraday Data Storage Time Unit‘ setting ‘1 Tick’
Ask Bid Difference Mode (In:1)

Select how the difference between the Ask Pulling & Stacking sum and the Bid Pulling & Stacking sum is calculated / displayed:

  • Ask – Bid
  • Bid – Ask
  • Absolute Difference (i.e. only magnitude, sign is ignored)
  • Bull/Bear Difference ([Stacked Bid + Pulled Ask] – [Stacked Ask + Pulled Bid], also affects the sum subgraphs SG2 and SG3)

Number of Levels to Calculate (In:7)

Select how many price levels to include in the pulling & stacking sums

  • Min: 1
  • Max: 15
Enable Asynchronous Mode (In:2)
When Asynchronous mode is enabled, the study subgraph time period is in independant of main price graph, and instead determined by the ‘Bar Duration (Seconds)’ input.
Bar Duration (Seconds) (In:4)

Select the time period for the study subgraph display, applies to Asynchronous mode only:

  • Min: 1 Second
  • Max: 15 seconds
Bars to Display (In:3)

Select how many bars to display in the subgraph output, applies to Asynchronous mode only:

  • Min: 60
  • Max: 1800
Enable ACS Button Reset (In:5)
When this setting is enabled the ACS Control bar button corresponding to that set by the ‘ACS Control Bar Button’ input can be used to clear the stored Pulling & Stacking data.
ACS Control Bar Button (In:6)
Select the desired ACS Control Bar Button, details of how to add the corresponding button to a control bar can be found on the Sierra Chart website – Advanced Custom Study Control Bar Buttons.
Zero Line (SG1)
Default: Line Extend to Edge
Displays horizontal axis at zero to suit zero centered subgraph display
Ask Pulling Stacking (SG2)

Default: Line
Displays the sum of the Ask Pulling and Stacking values (in Bull/Bear mode displays Bid Stacked + Ask Pulled)

Bid Pulling Stacking (SG3)

Default: Line
Displays the sum of the Bid Pulling and Stacking values (in Bull/Bear mode displays Stacked Ask + Pulled Bid)

Ask Bid Pulling Stacking Difference (SG4)

Default: Line
Displays Ask Bid Difference as defined by the ‘Ask Bid Difference Mode’ input.

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