BoJ published minutes of the December 19-20 meeting today, where the 10-year JGB yield cap was raised from 0.25% to 0.50%.
“Many members noted that there was a distortion in the price formation of 10-year bonds, and that the functioning of bond markets had deteriorated, particularly in terms of relative relationships among interest rates of bonds with different maturities and arbitrage relationships between spot and futures markets,” the minutes said.
“Members concurred that, with regard to the conduct of yield curve control, the measure to expand the range of 10-year JGB yield fluctuations to between around plus and minus 0.5 percentage points from the target level, while significantly increasing the amount of JGB purchases, was appropriate.”
Meanwhile, government representatives requested to adjourn the meeting after the discussions. They’re probably surprised by the agreed adjustment to YCC. The meeting was adjourned from 10:51 a.m. to 11:28 a.m. before concluding at 11:54 a.m.
