AnuchaCheechang/iStock via Getty Images About a year ago, I rated the preferred stock of Telephone and Data Systems (NYSE:TDS.PR.V) as a “hold”, as it was offering a 13.0% yield but it also had some risks. Since my article, the preferred stock has offered a massive total return of 70% and thus it has outperformed the S&P 500 (+27%) by an impressive margin. Due to the steep rally of the stock, its yield has decreased from 13.0% to 8.3%. The current yield may seem unattractive compared to the previous yie ...