Bank of America (BAC) lead the way Friday, as the Dow Jones Industrial Average closed out a fourth week of gains. The benchmark index of 30 selected stocks finished the week at 12,231.11, up 22.56 points from Thursday's close. The nation's largest mortgage lenders rose Friday, with Bank of America leading the way, followed by Citigroup (C)Ally Financial (GJM), JPMorgan Chase (JPM) and Wells Fargo (WFC). The nation's big homebuilders saw their stocks vary with PulteGroup (PHM) rising and Toll Bros. (TOL) closing down Friday. Real estate investment trusts fared well with American Capital Mortgage Corp. (MTGE), Annaly Capital Management (NLY) and Redwood Trust Inc. (RWT) all up. Investment banks Goldman Sachs (GS) finished up, while Morgan Stanley (MS) finished down on the day. Write to Justin T. Hilley. Follow him on Twitter @JustinHilley.