U.S. stocks dipped on Friday after a record profit at Wells Fargo failed to attract buyers and Boeing shares were pressured by two further problems with its new Dreamliner aircraft, Reuters reported. The benchmark S&P 500 index fell slightly but was still up on the week and just a few points shy of a five-year high set Thursday. Wells Fargo, the first major U.S. bank to post earnings this season, reported a record fourth-quarter profit as it set aside less money to cover bad loans and made more fees from mortgages. Its shares fell 2 percent to $34.70, erasing Thursday's gains but up 1.6 percent on the month. Shares of Dow component Boeing fell 2 percent to $75.49 after a cracked cockpit window and an oil leak on separate flights in Japan added to other mishaps earlier in the week and to safety concerns about its new 787 Dreamliner. The US Department of Transportation said the jet would be subject to a review of its critical systems by regulators. -- SPA