Hello Umbala,
You can use manual series mappings in a setup like this. More information on this is available in the following topic:
http://www.telerik.com/help/silverlight/radchart-populating-with-data-data-binding-with-manual-series-mapping.html
Essentially, you can map the field holding the company name, to the .XCategory member of the item mapping.
I hope this information helps.
Best wishes,
Yavor
the Telerik team
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