When I saw this thread I thought it would be another one of those "you need to buy altcoins to diversify your bitcoin" threads. This is an improvement OP! Buying stocks is, contrary to buying altcoins, a real diversification.
That said, I don't have a diversification strategy, I'm all in bitcoin.
My chart would look like this:
80% bitcoin
5% money in the bank in various currencies
15% cash.
I don't need to buy other things. Change my mind!

Wow! You are a true believer of bitcoin as the large chunk of your money is in bitcoin. Anyway, everyone is free to do what they want with their funds. In my case, I am slowly accumulating gold in the form of jewelries. At least for me, it is not hard to keep it and the amount is not that much if you buy small items of gold jewelry. I am also observing my spending habits and not buying unnecessary things.