What is the best way to grow a lump sum of 20K for the next 5-10 years?

Investing in an exchange traded fund (ETF) that tracks the S&P 500 such as the SPDR S&P 500 Trust ETF (ticker: SPY).

Hi!

First, you should have an investment objective in mind. If you need the capital in 5-10 years, then taking too much equity exposure will not be advisable as they will be exposed to market risks. So you can take a conservative approach and have a higher percentage, say 70-80%, of your capital invested in debt, and the remaining in equity.
You can also try using a robo-advisor, which takes into account your investment objective and horizon to suggest an optimal portfolio for you. It is not too expensive to make use of their algorithm so a lot of your capital will not be eroded by any fee.
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