I mean the total cap of all crypto. Of course no one can know for sure, but it would be interesting to hear any ideas. Btw the global stock market is worth about 80 trillion
Do you mean in this year or in the entire history of cryptocurrencies? In theory the market cap of bitcoin can grow as big as the total money supply in the world and that is a lot bigger than the market cap of stocks, but if you are talking about this year in particular something between 1 to 3 trillion dollars seems about right to me.