In my opinion, the current bitcoin is likely the stock.
Because the COINS have many defects, such as block congestion and transfer speed is slow, so in reality it is difficult to use COINS as payment method, although there is a KFC and starbucks support using BTC to pay, but I will not use, because the fees are too expensive.
Bitcoin invests in the same way as a stock, but the stock is based on how the business is doing. Bitcoin relies on the user community and the community, so there is a difference in essence. The stock may go bankrupt at any time, but Bitcoin will not