 Shares of Houston-based robotics company Nauticus Robotics NASDAQ: KITT stock, which came public through a special purpose acquisition company SPAC in September, jumped nearly 70 on Oct. 5 after it won a Defense Department contract for amphibious robot software. Nauticus is the brainchild of roboticist Nic Radford, who previously spent 14 years at NASA developing robots for Mars missions. 