So, what did we learn about the stock market this week?

First, that Wall Street understands the Federal Reserve isn’t a medical research organization. The Fed isn’t going to come up with a cure for coronavirus, or any other disease for that matter.

So, stock prices fell sharply on Tuesday after Fed Chairman Jerome Powell panicked and pushed through a half-point interest rate cut, because the action didn’t matter in the current crisis.

The Fed’s move was not only predictable, but it made the Fed look scared, like it was so worried about the coronavirus (whether or not it should have been) that it would do just about anything.

But we learned something else on Wednesday when stock prices rose sharply. The financial markets were (and probably will be again) very worried about the strength of Democratic presidential candidate Bernie Sanders.

Sanders got routed in Super Tuesday primaries, and Wall Street was very happy. He now has 501 delegates for the Democratic convention while former Vice President Joe Biden tops that with 566.

I don’t think either Sanders or Biden is going to beat President Trump in November. But, I suppose, they could.

So if Sanders, whose proposals are hated by Wall Street, shows any strength in the upcoming primaries, Wall Street is going to have a fit, and the market will be as depressed as it was elated Wednesday.