I Haven´t found a proper answer searching, so I´m asking here.
Say we want to buy and hold a bit of the top 20 coins by marketcap.
Here is the current list:
Bitcoin
Ripple
This proves you have no idea what you are doing. You want in same time invest in trully revolutionary technology, decentralized world first cryptocurrency Bitcoin and also invest in centralised, without limited supply sz*tcoin.
You should revise ur idea/priorities first, research more, then plan smth.
Holding one coin is security challenge, holding so many, is a recipy for disaster.