That being said, there is at least one significant argument for limiting bitcoins to a small portion of your portfolio at the most. Bitcoin is known for a stark jumps in price, high peaks and deep valleys that would make it difficult to have confidence in the asset as a long-term money maker that can be depended on. tying every dime you have to such a volatile asset would be imprudent. A good rule to follow is never to invest more than what you would be willing to lose.