By Stanley White
TOKYO, Oct 24 (Reuters) - Prices for longer-dated Japanese government bonds rose on Thursday after a successful auction of 20-year bonds eased concerns about supply and demand.
Bond prices at the middle and short end of the yield curve were largely unchanged, as investors paused to assess risks to global growth posed by the prolonged U.S.-China trade war and Britain's exit from the European Union.
Benchmark 10-year JGB futures 2JGBv1 fell 0.02 point to 154.12, with a trading volume of 11,693 lots.
The 10-year JGB yield JP10YTN=JBTC was flat at minus 0.140%.
The 20-year JGB yield JP20YTN=JBTC fell 0.5 basis point to 0.245%. The finance ministry auctioned 20-year debt earlier on Thursday that primary dealers welcomed with strong demand, which supported prices for cash bonds.
The 30-year JGB yield JP30YTN=JBTC fell 1 basis point to 0.400%.
The five-year yield JP5YTN=JBTC rose 0.5 basis point to minus 0.270%.
At the short end of the yield curve, the two-year JGB yield JP2YTN=JBTC was flat at minus 0.250%.
(Reporting by the Tokyo markets team; Editing by Shounak Dasgupta)
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