Strategy's stock is highly correlated to Bitcoin, although its returns are often at more extreme levels.Despite being one of the biggest Bitcoin bulls out there, Strategy (MSTR 7.56%) hasn't been a great buy of late. Last year was disappointing for the leading cryptocurrency, as its value fell by about 5%, but it was a much worse one for Strategy, whose share price plummeted a whopping 48%.As the largest corporate holder of Bitcoin, digital assets play a big role in the company's financials and in determini ...