All three U.S. stock indexes closed down about 1 percent Monday, as investors sold out of stocks due to worries over the political and economic stability of the eurozone and the safety of U.S. banks. The Dow Jones industrial average declined 125.25, or 0.98 percent, to 12,695.35. The broader Standard and Poor's 500 index lost 15.04, or 1.11 percent, to 1,338.35. The technology-heavy Nasdaq composite index fell 31.24, or 1.06 percent, to 2,902.58.