By Ben Eisen
NEW YORK (MarketWatch) -- Treasurys fell Wednesday before an auction of $21 billion in benchmark 10-year Treasury notes 10_YEAR +1.64% . The 10-year note yield, which moves inversely to price, was up 1.5 basis points on the day at 2.206%, while the 30-year bond 30_YEAR +1.15% yield was up 1.5 basis points at 3.335% and the 5-year note 5_YEAR +2.06% yield was up 1 basis point at 1.125%. After a weak auction of 3-year notes 3_YEAR +5.46% on Tuesday, market participants were worried about demand for the 10-year notes Wednesday as the market continues to fluctuate with increasing volatility. The Treasury Department will auction $13 billion in 30-year bonds on Thursday.