Maxwell again put all his energy into business, successively buying the British Printing Corporation, Mirror Group Newspapers and Macmillan Publishers, among other publishing companies.

https://en.wikipedia.org/wiki/Robert_Maxwell

On October 31, 2006, Condé Nast acquired the content aggregation site Reddit,[16] which was later spun off as a wholly owned subsidiary in September 2011.

https://en.wikipedia.org/wiki/Cond%C3%A9_Nast

Although I can't find that Macmillan publishing owned conde nast, I had previously read that somewhere but I guess it was incorrect. However the CEO is a Vanderbilt: https://en.wikipedia.org/wiki/Cond%C3%A9_Nast

Although it appears Maxwell/McGraw-Hill, who makes probably 70% of US textbooks, was owned by maxwell as well:

Macmillan's school publishing operations were merged into a joint operation with McGraw-Hill in 1989. McGraw-Hill acquired full ownership of Macmillan/McGraw-Hill in 1993 after Maxwell's death.[30]

https://en.wikipedia.org/wiki/Macmillan_Inc.