US treasury to sell $22 billion of 30 year bonds at the top of the hour.Today's USD 22bln 30-year bond auction will be watched closely after the prior sale stopped at a high yield of 4.871%, which was above the six-auction average of 4.745%. The last auction showed a tail of -0.7bps, better than the -0.3bps six-auction average, while the bid-to-cover came in at 2.45x, a touch above the 2.42x average, pointing to solid overall demand.