Hastings entertainment has a beta of 0.64. if the market return is expected to be 13.80 percent and the risk-free rate is 7.80 percent, what is Hastings required return? Hastings required return () % . . . you have a portfolio with a beta of 1.66 what will be the new portfolio beta if you keep 90 percent of your money in the old portfolio and 10 percent in a stock with a beta of 0.81? new portfolio beta ()