Leading cryptocurrencies surged alongside stock futures on Sunday as a government shutdown looms large. Bitcoin rallied overnight, following days of sideways movement. The leading cryptocurrency's trading volume surged 35.73%, suggesting trader interest and buying momentum. Ethereum also spiked, recouping some of its losses following a drop below $4,000 earlier in the week. The second-largest cryptocurrency remains down more than 16% from its all-time highs.