Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B) is hard to describe. On a very basic level, it partially or wholly owns a vast and varied collection of businesses (or the stock of those businesses). But that description misses a lot of the complexities of how it operates.

Berkshire Hathaway stock continued its strong 2025 advance Monday, hitting a record high and putting it way ahead of the S&P 500 index so far this year. Berkshire’s Class A stock rose 1.8% to $784,957 while the Class B shares ended at $523.

Shares of Warren Buffett's Berkshire Hathaway ended the day at another record. The company's Class B shares are up nearly 17% this year, compared with a 3.7% decline in the S&P 500. It was their fifth consecutive record close,