$Sea Ltd$ reached an all-time high at 366.90.A fifth and final company thatcould become one of the largest stocks by 2040is Singapore-based $Sea Ltd$. Sea sits just inside the top 50, at the moment, with a market cap of nearly $200 billion.Sea's secret weapon is that it has not one or two, but three rapidly growing operating segments. For the time being, the company's gaming division is the only one generating positive earnings before interest, taxes, depreciation, and amortization . The compan