Buffett invested in Heinz in 2013 and two years later, Heinz merged with Kraft Foods. He bought 326 million shares during this merger at a cost of around $24.6 billion. He has held on to that stake, which is now worth $11.4 billion.

Warren Buffett-led Berkshire Hathaway's (NYSE: BRK.A)(NYSE: BRK.B) had a substantial investment in General Motors (NYSE: GM). According to Berkshire's SEC filings, the conglomerate owned 50 million shares of GM at the beginning of that year,

Berkshire sold 20.7 million of those shares in the third quarter of 2024, but its 86.4 million remaining shares are still worth $949 million and give it a 1.8% stake in the company. Berkshire's stake in Nu only accounts for 0.3% of its entire portfolio, but the Latin American bank is still growing much faster than its brick-and-mortar competitors.

Warren Buffett is widely considered one of the greatest investors ever because he has delivered excellent returns for a long time. With that as a backdrop, let's consider two stocks in the equity portfolio of Buffett's Berkshire Hathaway that are particularly worth investing in today and holding onto for a while: Apple (NASDAQ: AAPL) and Amazon (NASDAQ: AMZN).

Some of the Oracle of Omaha's most-popular buys -- as well as Berkshire's largest holding -- offer robust upside potential in 2025.

Warren Buffett is one of the better-known and successful investors. His Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B) portfolio has consistently outperformed the S&P 500 (SNPINDEX: ^GSPC) since its inception in the mid-1960s.