Bitcoin skyrocketed 750% since Warren Buffett called it 'rat poison' in 2018. Why was he cautious?

Bitcoin has surged around 750% since Warren Buffett called it “rat poison squared” in 2018, despite his longstanding concerns about cryptocurrencies. The digital asset has since hit record highs above $126,000, driven by growing institutional and investor interest, before correcting sharply. Here’s why Buffett remained cautious about Bitcoin.