Berkshire Hathaway may soon sell some or all of its stake in Kraft Heinz Co. The move comes just months after the packaged food giant announced plans to split into two separate companies. This potential exit would mark a major shift for one of Warren Buffett's longest-held investments, which has lost significant value since Berkshire's 2015 merger deal.

Kraft Heinz shares fell sharply after the split announcement, reflecting investor skepticism about the planned separation. Berkshire's stake, valued at billions, has been a drag on its portfolio performance. The potential sale raises questions about whether Buffett sees limited upside from the restructuring or is simply rebalancing his portfolio after years of underperformance.

The split aims to separate Kraft's grocery brands from Heinz's condiment and sauce businesses. Investors will watch for Berkshire's timing and whether it sells piecemeal or exits entirely. A full divestment would remove a major shareholder and could pressure the stock further. The move also signals Buffett's evolving stance on legacy food conglomerates facing stagnant growth.