Stocks opened comfortably higher Friday but ran out of steam as the session wore on. Still, an ongoing rally in several mega-cap stocks kept the Nasdaq Composite green into the close. The S&P 500 drifted into negative territory late in the session, and the blue chip Dow Jones Industrial Average finished in the red as McDonald's continued to struggle.
By the numbers, the Nasdaq added 0.6% to 18,518. The S&P 500 shed 0.03% to 5,808, and the Dow fell 0.6% to 42,114, as MCD slumped 3%. The fast-food giant ended with a weekly loss of 8% after the Centers for Disease Control and Prevention (CDC) said it's investigating an E. coli outbreak linked to McDonald's Quarter Pound burgers.
