When pursuing a buy-and-hold strategy investing in crytocurrencies, what are the best practices for diversifying among them?
Ie.
Own by market cap' weight?
Own 10% of top ten (by market cap')?
Own varying percentages of your top 5 favourite projects?
90% Bitcoin, 10% new ICOs?
The idea is to mitigate some risk (Bitcoin is least volatile), whilst having exposure to alt-coins as 'emerging currencies' with high potential.
Any theories?
I'm leaning to one of weighted by market cap', but I'd like to hear other suggestions.