The move aimed to defend the yield curve, following a bond sell-off after Trump's victory, with the 10-year JGB yield turning positive during the week.
On Thursday, no bonds were bought as the central bank offered to buy two-year bonds at a yield of -0.09 percent and five-year bonds at -0.04 percent, higher than Wednesday's market rates. However, the yield on the 10-year bond retreated slightly.
