This Is the Stock Warren Buffett Should Have Been Buying

Last month, U.S. Securities and Exchange Commission (SEC) filings revealed that Warren Buffett had made large purchases of Verizon and Chevron stock in the third and fourth quarter of 2020. Illumina (NASDAQ: ILMN), maker of genome sequencing machines, may not be the type of secure, stable company Buffett likes, but it is at the forefront of a revolution in medicine and has several traits that the magnate covets. In his 1995 shareholder letter, Buffett said that he looks for "economic castles protected by unbreachable moats."