The best way to build such a portfolio is to invest in a wide mix of assets, including stocks, bonds, index funds — and cryptocurrencies, if you’re interested in buying them. By mixing some higher-risk assets with the potential for higher returns (such as Bitcoin) and others with lower risk that limit the returns you can earn (such as S&P 500 ETFs), you can maximize your chances that your retirement nest egg will be large enough to live on.
Aside from these issues, there are some other practical considerations. Most 401(k)s won’t allow you to buy Bitcoin. And you likely want to put at least some money into your 401(k) so you can earn your company match.
If you’ve done your research, you believe in the future of Bitcoin, and you want to add some of it to your savings, there’s nothing wrong with that. Just don’t make it your sole investment to provide for your future. You could end up seriously regretting it if the virtual currency can’t stand the test of time.
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