Suppose, you are typical risk-averse investor living in the CAPM world with risk-free borrowing-lending. With recent COVID-19 vaccine news, you have reasons to believe that things are now more likely to return to normal sooner than later. How would this affect the composition of your complete investment portfolio comprising investments in a portfolio of risky assets and a riskless asset?

Given that the impact of COVID-19 is not the same across industries, what kind of industry-wise adjustments (in terms of portfolio weights) do you predict will happen to the US market portfolio as a result