Shares in nuclear power company Oklo (OKLO -5.32%) rose by a whopping 28% in the week to Friday morning. The move comes in a busy week for the company, whereby events helped encapsulate the investment case for the stock.What does Oklo doThe company is developing what it describes as "next-generation fast fission power plants," known as Aurora. Its Aurora powerhouse has a few interesting qualities. First, it's based on a fast fission plant (Experimental Breeder Reactor-II) that the U.S. government operated f ...