Berkshire Hathaway Inc. (BRK-B) vs Tesla, Inc. (TSLA)

Berkshire Hathaway Inc. is a publicly traded diversified holding company with major businesses and investments across insurance, freight rail, energy, manufacturing, retail, and financial assets. Its shares give investors exposure to the operating performance of its subsidiaries as well as the value of its large public-equity portfolio. The company's performance is influenced by insurance underwriting results, investment returns, economic activity, interest rates, capital allocation, and broader market conditions.

Tesla, Inc. is a vertically integrated battery electric vehicle manufacturer and developer of real-world artificial intelligence software, including autonomous driving technology and humanoid robots. Its vehicle lineup includes luxury and midsize sedans, crossover SUVs, a light truck, and a semi truck. Tesla also plans to launch a sports car and introduce a robotaxi service. In 2025, the company delivered nearly 1.64 million vehicles globally. Beyond automotive operations, Tesla sells batteries for stationary energy storage across residential, commercial, and utility applications, along with solar panels and solar roofs for power generation. The company also operates a fast-charging network and an auto insurance business.