New studies from Wells Fargo and Fidelity show that younger investors are indifferent about their investment portfolios, and are actively avoiding the stock market to meet their long-term savings goals. This, of course, is a nightmare coming for millennials, who need to be more engaged with their money and investment portfolios. In this article, we’re asking investment professionals what Wall Street (and finance processionals) can do to better engage younger investors with smart investment vehicles, and savvier investment choices? What are your favorite millennial portfolio “engagement” tips, and why? Why are so many younger investors indifferent about the stock market and their own portfolios?