https://www.federalreserve.gov/releases/z1/dataviz/dfa/distr...

Boomers held significantly higher percentages of capital than millenials or genx holding age steady.

https://www.nber.org/papers/w27123

Studies have shown wealth declining for millenials while increasing for boomers.

https://www.self.inc/info/generational-wealth-gap/

And it's across multiple forms of wealth.