How much money do I need to invest with Custom Portfolio?

Acorns allows you to start investing with as little as $5. Acorns Custom Portfolio lets you invest in fractional shares of companies. With fractional shares investing, you don’t need to have enough money to buy a full share of a stock you’re interested in. For example, even if a stock is $100 dollars per share, you can still own a piece of that stock in your Custom Portfolio.