A big new U.S.-U.K. nuclear investment deal got Nano Nuclear investors excited today -- but they shouldn't be.Nano Nuclear Energy (NNE 20.39%), the tiny nuclear power company developing even tinier "micro" nuclear power plants, saw its stock soar 19.8% through 1:15 p.m. ET Friday. The U.S. and U.K. governments agreed Thursday to cooperate in developing the two countries' artificial intelligence, quantum computing, and nuclear energy sectors, and to spend $350 billion doing so.$350 billion in total investme ...