I was planning to abandon Norgate data, since there is Wealth data, but after testing strategies on Wealth data I found that results are very different. I compared the charts of Wealth data with Norgate data -- they are completely different ..... although similar at first glance.

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It looks like WealthData had some issues with some ETFs during that period, can you right click on the chart and select Reload Chart Data from Provider? Also do this for QQQ if your QQQ looks off.
I confirm that I have the same issue as above. Checked Trading View and it's consistent with Norgate data. The difference on 4/8 is huge...
@Glitch reload worked for me. Thanks.
Does WealthData have some kind of validation process for its data? The errors for these ETFs were quite large so they were definitely abnormal, it would be great if such thing could be caught asap.
Does WealthData have some kind of validation process for its data? The errors for these ETFs were quite large so they were definitely abnormal, it would be great if such thing could be caught asap.
I recently retired the legacy WealthData so I'm not sure how much validation it had, but I'm working on such a validation suite for WealthData presently.
For the record, it was validated every day. The problem appeared after the transition to "new" Wealth-Data.
Glitch:
On MDY after "right click on the chart and select Reload Chart Data from Provider" the graph was corrected, although yesterday it did not work. But, on other graphs, for example IWM or XLE this does not correct the graph.
QUOTE:
can you right click on the chart and select Reload Chart Data from Provider?
On MDY after "right click on the chart and select Reload Chart Data from Provider" the graph was corrected, although yesterday it did not work. But, on other graphs, for example IWM or XLE this does not correct the graph.
Case in point... the differences are apparent in the data before approximately the middle of June 2025.

Yes, it's an issue that was the result of the new WealthData. I'm looking into it!
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