regression model of portfolio return negative what is january annual return why is portfolio return smaller than expected what is the value of the january return average return of a portfolio why does portfolio return have a negative r square why is portfolio return negative what model will return be positive in a portfolio with a dummy variable why does my portfolio return get negative why is adjusted jan return negative what is the value of $r why does the portfolio return get negative why do portfolio returns go negative why is the january return of portfolio a dummy variable in excel why is portfolio return negative? why is the r square of a portfolio negative why is january's r square larger than expected which variable is a dummy variable in a portfolio regression model? average daily return what is the value of $r