free not-delayed E-mini S&P 500 quotes

The index future cfd is real time. I took this screen a couple of minutes ago 15:00uk time
Screenshot_20220726_150104_com.fusionmedia.investing.jpg
 
My understanding is that "US 500 Cash (US500)" is the index not the futures contract.
True, but if you only need it as a chart reference, it looks fine and it's free. Maybe a couple of points difference, steady. I think is derived from the futures, as it trade out of rth.

This is the 1min chart, investing cfd vs es future on IB. Taken within a few seconds between each other.
Screenshot_20220726_151642_com.fusionmedia.investing.jpg
Screenshot_20220726_151630_atws.app.jpg
 
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