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Not only when it comes to cryptocurrencies ;)

Cryptos are like any other speculation, gold stocks, options, position size is the key, don't put more than 5% of your portfolio in any one idea. Create a basket of of small positions, some will go to zero, but it only take a few winners to cover those losses and profit.

and even 5% is a huge allocation to a crypto, maybe 5% for the whole basket