The 10-year JGB futures rose 0.03 points to 152.68, with a trading volume of 23,229 lots by late afternoon trade.

The futures contract pared modest losses after the 20-year auction attracted ample investor demand.

The bid-to-cover ratio, a gauge of demand, at the 900 billion yen ($8.2 billion) 20-year auction rose to 5.47 from 5.10 at the previous sale in April.

The benchmark 10-year cash JGB yield fell half basis point to minus 0.055 percent.

The 20-year JGB yield dropped 1 basis point to 0.350 percent while 30-year and 40-year yields fell 1.5 basis point each 0.520 percent and 0.550 percent, respectively.