Kraft Heinz Kraft Heinz (NASDAQ: KHC), representing nearly 5% of Buffett's Berkshire Hathaway portfolio, is a multinational food and beverage company. The Nasdaq Composite has sunk 25% year to date in response to inflationary pressures, rising interest rates, and unsettled fear surrounding the war by Russia against Ukraine. Many tech companies continue to face growing pains as they try and navigate a high interest-rate environment and manage unfavorable comparable metrics from a year ago.