They must needs funds for something.

https://www.bloomberg.com/news/articles/2019-01-25/rothschilds-sell-last-piece-of-austrian-empire-after-200-years
https://www.crushthestreet.com/articles/the-rothschild-dynasty-is-dumping-shares-what-does-this-mean
https://steemit.com/money/@crowe/rothschild-family-is-selling-u-s-assets-in-preparation-for