Warren Buffett's Berkshire Hathaway made a slew of changes to its equity portfolio last quarter. Most notably the legendary investor ramped up his Chevron position by over 30%. Berkshire owned over 38 million shares of Chevron at the end of 2021, about 33% more than what it held in the previous quarter, a regulatory filing revealed. Now the conglomerate's bet on the energy name, worth about $4.5 billion, is the ninth biggest holding in its equity portfolio, according to InsiderScore.com analysis. Buffett first bought Chevron at the end of 2020, which was largely viewed as a classic value play and a bet on the rebounding economy. The wager has paid off handsomely as the energy stock rallied 39% in 2021 and has gained another 16% year to date. Chevron also pays a 4.2% dividend. The conglomerate also scooped up a timely 14.7 million shares of Activision Blizzard in the fourth quarter, before the video game agreed to an acquisition by Microsoft. Activision enjoyed a big rally this year, up 22.5%, after the announcement of the $68.7 billion all-cash deal. Here's a look at Berkshire's top 10 holdings as of the end of 2021. The rest of Berkshire's top 10 holdings remained unchanged at the end of 2021 with Apple being the biggest stake by far — a $158 billion value. About 70% of Berkshire's equity portfolio was tied up in just four names, namely Apple, Bank of America , American Express and Coca-Cola. In other moves, Berkshire trimmed its holdings in two credit card companies. The conglomerate decreased its Mastercard stake by 7% to about 4 million shares, while cutting its Visa bet by 13% to 8.3 million shares. The Omaha-based conglomerate also disclosed a stake in Nu Holdings , the parent company of Brazilian digital bank Nubank. The fintech company attracted a $500 million pre-IPO investment from Berkshire in June 2021, and the firm went public in December.
Warren Buffett at Berkshire Hathaway's annual meeting in Los Angeles, California. May 1, 2021.
Gerard Miller | CNBC
Warren Buffett's Berkshire Hathaway made a slew of changes to its equity portfolio last quarter.