If you borrow (from your broker) some portion of the funds you use to buy stock, what does this do to the risk of your portfolio? It only increases your risk if you fail to properly research your purchases. It increases your risk by magnifying both your potential gains and losses. It reduces your risk because you now have more upside potential. It reduces your risk because you now have less downside potential. It has no impact on risk. The stock that you buy is still just as risky