Wladimir Klitschko has been fighting in Ukraine after Russia launched a full-scale invasion.

Efrem Lukatsky/AP Photo

Heavyweight boxing legend Wladimir Klitschko returned to Ukraine to fight against Russia's invasion. Insider spoke to Kostya Kovalchuk, the investing chief of Klitschko's $100 million family office. Kovalchuk listed Warren Buffett, Ray Dalio, and Terry Smith as three of his biggest influences.

Ukraine's Wladimir Klitschko won more heavyweight title bouts than Muhammad Ali and...

Continue Reading Boxing legend Wladimir Klitschko is fighting on the front line to defend Ukraine – here's how investing legends Warren Buffett and Ray Dalio inspired the head of his $100 million family office