Most U.S. stock indexes closed lower Tuesday, with the Standard & Poor’s 500 Index posting its longest streak of declines since May amid concerns over corporate profits. The euro hit a two-year low. The Dow Jones industrials closed at 12,653.28, down 84.01 points, or .66 percent as the share price of component Alcoa fell more than 4 percent on tepid earnings. Nasdaq stock indexes slipped as well. Earlier in the session, European shares rallied, although the euro weakened against all 16 major peers.