TOKYO, July 28 (Reuters) - Japanese government bond prices were narrowly mixed on Tuesday, with ample investor demand seen during the 40-year bond auction.
Benchmark 10-year JGB futures eased 0.01 point to 152.3, with a trading volume of 17,152 lots, while the 10-year JGB yield gained half a basis point to 0.020%.
The bid-to-cover ratio, a gauge of demand, at Tuesday’s 500 billion yen 40-year JGB sale rose to 3.11 from 3.06 at the previous auction in May.
The 40-year JGB yield eased 1 basis point to 0.585%.
In the super-long zone, the 20-year JGB yield and the 30-year JGB yield inched down half a basis point each to 0.405% and 0.565%, respectively.
At the shorter end of the curve, the two-year JGB yield stood flat at minus 0.135%, while the five-year yield added half a basis point to minus 0.115%. (Reporting by Tokyo Markets Team; Editing by Rashmi Aich)