Technical Studies Reference
The Open Interest study displays the Open Interest for futures and options charts.
Open Interest is only available for Historical Daily data type of charts. Not Intraday charts. Therefore, the study only makes sense on Historical Daily data type of charts.
When used on an Intraday chart, it will give the same values as the Number of Trades study.
A Historical Daily data type of chart can be opened through File >> Find Symbol >> [select symbol] >> Open Historical Chart.
Open Interest is the number of outstanding contracts which currently exist for a particular symbol.
When using this study, you may find that for some bars in the chart, there is no Open Interest data. The solution to this is to right-click on the chart with your Pointer before those bars and select Delete and Download Data to re-download the data.
Usually for the current day, Open Interest is not available. It becomes available after the close of the next trading day.
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*Last modified Friday, 21st April, 2017.