Listen, it ain't perfect but damn if it doesn't loosely follow. What I'm talking about is the price of Bitcoin and the flow of M2 money supply.
The trend has gotten way more attention in the past year as folks picked up on the price of bitcoin, when looked at on a 10 week lag, follows M2 money supply to an extent that is worth paying attention to.
M2 money supply is the amount of money available in the entire world if you were not familiar with it.
Look at this chart...
That is the past two years. Looks good for BTC in the near term.