What I mean is that, the investors should not concentrate on a particular investment, else the may experience a bankrupt in the future if their business is not functioning properly.
It's best you don't give a particular percentage since you're not a financial advisor because your sharing proportion can be used and it backfires on the investor.
Diversifying is a must as an investor because without it, you'll be forced to make some decisions that'll involve cashing out of your investments sooner than you would had loved to. I once had all my capital in a particular investment that made me to start selling my shares when I was low on cash and like play I sold all my shares in that investment.
Na from small small, I look my portfolio and nothing dey again but with diversifications, I for get other assets wey I for dun make profits on.