That is actually, quite literally, inflation. It's money depreciating in value relative to stocks and financial products. Just like a burger at the golden arches shooting up in price is inflation, so is the price of a stock. It's probably not _only_ inflation, supply and demand will have caused the majority of this shift, since savers saw their money start evaporating. But that is of itself of course a second order effect of inflation, so I think the point stands.