U.S. stock indexes were mixed Monday morning. In midmorning trading, the Dow Jones industrial average lost 4.76 points, 0.04 percent, and closed at 12,810.63. The Nasdaq picked up 4.07 points, 0.13 percent, to 2,908.68. The Standard and Poor\'s 500 gained 0.66 points, 0.05 percent, to 1,380.51. The benchmark 10-year treasury was unchanged, yielding 1.611 percent. The euro rose to $1.2719 from Friday\'s $1.2711. Against the yen, the dollar was 79.38 from 79.40 yen. In Tokyo, the Nikkei 225 index lost 0.18 percent, 81.16 points, to 8,676.44.