<prompt> Human: I am currently a 21 yr old student at a large private university. I funded my way through college with scholarships so I have no debt on my books.I recently opened a Vanguard Roth IRA and invested all of the money that Ive earned at my school job into a 2055 target fund only 1000. I also put 3000 into a Vanguard index fund. Through these investments, 90 of it is in stocks. I know 4000 is not very much, but I want to diversify to mitigate risk and have a healthy portfolio.As for my other assets, I have about 5000 in my bank account that I am saving for emergencies and daily use. I will be interning this summer and earning about 9-10k in net income. On top of that, I will earn some more money from my University because of my scholarship is more than the cost of attendance. That should give me about 10,000 untaxed!! additional next year. Anyway, I will have a lot of money to play with next year. What kinds of bonds or other assets would you all recommend that I begin to consider to maximize my portfolio?  <response>: If youre 21, you want to be mostly in stocks, unless youre extremely risk averse and can accept lower earnings. The diversification you do is invest in many many different stocks, which is exactly what the target date fund does. Plus the target date fund automatically gets more conservative as you age. 