Abel was named vice chairman of Berkshire Hathaway in 2018. Although he has been at the company for more than two decades, he is considered to be much more guarded and hands-on than Buffett.

Warren Buffett will step down as Berkshire Hathaway CEO at the end of 2025, paving the way for longtime successor, vice chairman Greg Abel, to take the reins.

Here's what to know about Greg Abel's business background and his investment strategy, and how it compares with Buffett's.