U.S. markets managed to make small gains across the board ahead of Friday's jobs report. Crude oil fell 1.49% to settle at $50.76 a barrel. Kroger bagged 7% gains after beating earnings estimates. The grocer also posted same-store sales grew for a 45th straight quarter. McDonald's (MCD) was one of the blue chips' worst performers. Shares fell after Piper Jaffray downgraded the stock to NEUTRAL from OVERWEIGHT. The firm thinks efforts to boost sales may take longer than expected. But an upgrade from Goldman Sachs gave Dunkin Brands (DB) a lift. The firm likes its 'Perks' loyalty program and is now rating the stock a BUY.