One day after U.S. authorities warned they have extraordinarily detailed information about a planned al-Qaida attack, major financial institutions in New York City, Newark, N.J., and Washington, were under heavy security as they opened for business today. The New York Stock Exchange is one of five financial institutions under heavy security after authorities discovered detailed information about al-Qaida plans. In Washington, law enforcement agencies are maintaining citywide patrols and inspecting vehicles for explosives around the International Monetary Fund, World Bank buildings and on Capitol Hill. In Manhattan, some streets were barricaded, and trucks were banned from bridges and tunnels leading...