
Legendary investor Warren Buffett is known for making outsized bets on companies once he becomes convinced of their growth prospects. Famously, Buffett owned zero shares of Apple (AAPL) before 2016. However, since then, the ace investor has not only purchased shares of the tech giant, but Apple has quickly become his company Berkshire Hathaway's (BRK.A) biggest holding. Currently, the iPhone maker accounts for roughly 45% of Berkshire's portfolio, with an eye-watering value of $164 billion.
It's been a similar story for oil major Chevron Corporation (CVX) and its journey to the upper echelons of Buffett's portfolio. Berkshire owned no shares in the company before late 2020, but Chevron now ranks among the portfolio's top five holdings.