Investors love unprofitable nuclear power plant company NuScale Power. But I'd prefer to see it earn a profit before buying the stock.Last week was a great week to own nuclear fuel stocks like Cameco (CCJ 1.40%), as the Biden administration announced tenders to buy $3.4 billion worth of nuclear fuel for American atomic power plants.This week is starting off on a similarly hopeful note for another (potential) beneficiary of administration support for nuclear energy. Rising only modestly on Friday's bullish n ...