Money Market Fund Recession Indicator?

So I was just looking around some charts and came across the money market fund chart history. It looks like since 1975 - every money market fund volume peak led to a recession (the vertical gray lines).

Has anybody ever talked about this before?

So I was just looking around some charts and came across the money market fund chart history. It looks like since 1975 - every money market fund volume peak led to a recession (the vertical gray lines).

Has anybody ever talked about this before?