# Show ETH or Extended Data

You may also need to right-click the chart again and select Clear Local Data, this will delete your local data cache and re-download the data from your connection. This may need to be done if you don't have any extended data stored in your local cache.In order to show ETH or pre/post market trading on your chart you need to right-click the chart background and make sure Show Extended Data is enabled.

<figure><img src="/files/9pMHeTMS1RW4rM2hPjTo" alt=""><figcaption></figcaption></figure>

If you are still unable to see ETH or pre/post market data then you will need to make sure the instrument has an exchange assigned to it's trading hours: <https://docs.motivewave.com/knowledge-base/charts/assign-trading-hours-to-an-instrument>


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