Markets open lower as Portugal debt stress fuels concern

• Dow -1.03% to 16,811.50. S&P -0.96% to 1,953.90. Nasdaq -1.44% to 4,354.38.
• Treasurys: 30-year +0.52%. 10-yr +0.34%. 5-yr +0.21%.
• Commodities: Crude -0.25% to $102.04. Gold +1.37% to $1,342.50.
• Currencies: Euro -0.25% vs. dollar. Yen -0.48%. Pound +0.24%.