Over the past decade, Bitcoin has evolved from a niche technology to a recognized financial instrument, attracting investors and businesses due to its decentralized nature and limited supply. Many companies are now holding Bitcoin as part of their financial reserves for reasons such as hedging against inflation, potential long-term growth, and brand positioning. While some businesses, like Tesla, use Bitcoin as a strategic diversification tool, others, such as MicroStrategy and Bitcoin ETFs, primarily exist to hold and manage Bitcoin. The risks and criticisms of Bitcoin treasuries should also be considered. In 2025, MicroStrategy leads in corporate Bitcoin holdings, followed by mining companies and Bitcoin-native firms.