(4 points) Suppose the assumptions of the CAPM are satisfied. You are currently invested in the market portfolio, and you are considering "marginally" tilting your portfolio toward the stock of a company called JJQ. That is, you intend to sell a small fraction of your holdings of the market portfolio and will use the cash proceeds to buy JJQ's stock. The beta of JJQ's stock with respect to the market portfolio is 0.5, and JJQ's stock return volatility is 35%. The volatility of the market portfolio is 19%.

As a result of this change to your portfolio, do you expect your portfolio's volatility to go up, to go down, or to stay unchanged? Provide an explanation for your answer.