Cryptocurrency markets are highly volatile and relatively young, which creates both larger upside potential and greater downside risk. Past high returns do not guarantee future performance, and many crypto assets have also lost significant value.

Yes. For an accurate ROI, add transaction fees, gas fees, and exchange commissions to your initial investment amount. These costs reduce your effective return and should not be overlooked.

Sum the total amount you invested across all assets as your initial investment, and use the combined current or sale value as the final value. This gives you an aggregate portfolio ROI rather than per-asset performance.