I have about 6k in my bank account, Ill be graduating next year with about 20k in loans. I want to start investing now though, how much of my savings do you think I should invest in a stock portfolio.
You should invest a trivial (<500$USD) amount of money in a stock portfolio. If you aren't able to make more on the market than the interest rates of your loans, you are losing money. This question has discussed this topic as well.