Bogdan Cristel/Reuters Way more crypto investors than many outsiders would think actually have confidence in crypto's long-term fundamentals. Still, there are concerns in the market. Security in crypto exchanges looms as a big risk. How Long Do Investors Plan to Hold Onto Bitcoin? Did investors buy bitcoin because it was trendy, or are they committed to cryptocurrency for the long haul? As in any new and rapidly-growing market, this kind of investor intent and the overall feeling of market sentiment matters a lot.