The world's leading economy sees so far its treasury prices remain marginally lower throughout the present volatile trading after an average $24 billion sale of new 10-year government debt selling 10-year supply at a high of 2.02 percent although the bid-to-cover ratio or in other words an indicator of demand was 3.05 from a recent average of 3.11, having in mind that traders projected the new 10-year issue to sell at 2.021 percent.