Buffett is a long-term value investor who often holds stocks for decades, so you won't find him chasing the latest market trends, not even those as powerful as artificial intelligence (AI). However, at least three existing holdings in Berkshire's portfolio are using AI to enhance their legacy businesses.

The last time Berkshire aggressively bought stocks was in early 2022 when the S&P 500 was 20% below current levels.

Warren Buffett’s Berkshire Hathaway sold more stocks than it bought in 2024. The company sold $134 billion worth of stocks and only bought $9 billion. This resulted in net sales of $134 billion, a record high for Berkshire.