The cryptocurrency market is insanely volatile in 2018. You can make a fortune in a moment and lose it in the next whether you trade Bitcoin, another coin, or the GBTC Bitcoin trust. Consider mitigating risks, hedging, and not “going long” with all your investable funds. TIP: If you trade only the top coins by market cap (that is coins like Bitcoin Ethereum), or GBTC, then the chances of losing everything overnight are slim (not impossible, but slim). Other cryptocurrencies are riskier (but can offer quick gains on a good day).