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.

Greg Abel, 62, is going to be the next CEO of Berkshire Hathaway. Buffett said he would step down at the end of the year.

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