When do you plan on using the money? The answer will be different if you need to spend it in 2 years or if this is saving for your retirement in 30 years.

What is your risk tolerance?

What other sorts of investments do you already have?

If it was me, and it was a long term investment, I'd put it in a S&P 500 Index fund.

https://personal.vanguard.com/us/FundsSnapshot?FundId=0540&#... (this fund has a 0.07% expense ratio)