U.S. Treasury rates double overnight on 1 month bill: Notes on Treasury rates from Oct.8, 2013

Really short (1 month) term T-bill rates double overnight. Rates increase 14 basis points to 0.27% for a 1 month t-bill. The increase in yield reflects lower demand (Bond prices and interest rates are inversely related.). See the article cite below for more details on the Treasury market movements.