Warren Buffett has officially stepped down as CEO of Berkshire Hathaway, marking the end of an era for the conglomerate he built over more than half a century. The December quarter marked Buffett's final period as chief executive, with his longtime deputy Greg Abel now occupying the role. This transition represents one of the most closely watched leadership changes in corporate America.

The handover from Buffett to Abel has been years in the making, with the 92-year-old investor gradually preparing for succession. Abel, who previously oversaw Berkshire's non-insurance operations, was named Buffett's successor in 2021. The transition comes as Berkshire Hathaway navigates a complex economic environment with significant investments across insurance, energy, manufacturing, and retail sectors.

Investors and analysts will be watching closely to see how Abel maintains Berkshire's distinctive investment philosophy while potentially charting his own course. The company's market value exceeds $700 billion, making it one of America's most valuable corporations. Abel has pledged to follow Buffett's 'framework,' suggesting continuity in the conglomerate's decentralized management approach and long-term investment strategy.