Using General Index (GX) Assessments in Sparta Curves

Overview
Sparta now includes GX Assessments — trusted daily physical price benchmarks — directly within the Live Curves interface. These assessments are useful for validating market activity and comparing forward views with spot indicators.


Where You'll See GX Assessments

  • In Live Curves table (below Market Activity)

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  • GX row appears only if at least one product has a GX quote

  • Click a cell to open Live Curves Dashboard with GX data preloaded

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  • Also available via product selector/date picker


What GX Covers

  • 80+ mapped products

  • Strongest alignment with Argus in Gasoline and LPG

  • Reliable signal in broader oil markets, even where Platts dominates


Limitations

  • No GX in Combo, Forwards, or Futures charts

  • No GX on iOS

  • Excel Add-in support coming soon


FAQ
Q: What if a product doesn’t have GX data?
A: It will show a dash (‘–’). If any product in your portfolio has a GX value, the row still appears.

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Q: Do I need to activate it?
A: No, GX assessments are automatically available for supported products.