Warren Buffett hired Todd Combs to take over Berkshire's portfolio one day. Here's what close watchers say about his surprise exit.

Core Insights - Todd Combs, who was hired by Warren Buffett in 2010 to help manage Berkshire Hathaway's investment portfolio, has left to join JPMorgan, coinciding with Buffett's impending retirement as CEO after 60 years [1][9]. Group 1: Combs' Contributions and Departure - Combs was praised by Buffett for his integrity and contributions to Berkshire, including a significant role in the acquisition of Precision Castparts for over $30 billion [5]. - His leadership at Geico led to a successful turnaround, which Buffett acknowledged in his recent letter, highlighting Combs' hard work and the "spectacular improvement" at the company [6]. - The announcement of Combs' departure was formal, with Buffett referring to him in a more distant manner compared to other colleagues, indicating possible dissatisfaction with the exit [8][9]. Group 2: Implications of Combs' Exit - Combs' departure raises questions about his diminishing role in managing Berkshire's portfolio, as he had taken on various responsibilities outside of direct investment management [11]. - There are suggestions that Combs may have aspired to a larger role in managing the portfolio, which was unlikely given Buffett's recent comments about Abel taking over capital allocation responsibilities [12][13]. - The transition to JPMorgan may reflect Combs' desire for new opportunities, especially as he resigned from his position on JPMorgan's board prior to starting his new role [10].