The daily returns of a stock are modeled by a normal distribution with a mean of 0.8% and a standard deviation of 1.2%. An investor wants to construct a portfolio that consists of this stock and a risk-free asset. The risk-free rate is 0.3%. The investor wants the portfolio to have a standard deviation of 0.9% and expects a return of at least 1.2%. Determine the weight of the stock in the portfolio that the investor should hold.