Get the list of EntityClass "Financial" at a specific point in time?

Questions
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1

Hi, certain entity classes like the SP500 change over time.
We can get the current constituents like this

EntityList[EntityClass["Financial", "SP500"]]

But is there a way to get the list at a specific point in time?

2

No. I don’t believe so.

Typically you can used Dated to refer to specific entity at a point in time. But this doesn’t work with an EntityClass.