Who is behind the stock market rally since November?

As the chart explains, US people made a historic dash for cash in November.

Foreign investors didn't gobble up US assets.

US bond prices trended down too, tracking the declines in USD.

So, who is buying stocks, and when do they run out of money?

Thoughts?
Beyond Technical AnalysisbondsforeignexchangemoneySPX (S&P 500 Index)SPDR S&P 500 ETF (SPY)

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