U.S. stocks on Friday notched weekly gains that pushed the S&P 500 to its highest close since mid-2008 as economic reports mostly offset concern about rising oil costs. Most European stock markets ended higher Friday in choppy action as upbeat earnings boosted investor optimism. Asia stocks traded mixed this morning, with Japanese exporters helped by a weaker yen and Hong Kong also gaining, but with sentiment bruised by fears high oil prices would hurt the global economic recovery.