BoJ surprises the markets today by widening the band of 10-year JGB yield from 0.25% to 0.50% today. At the same time, short term policy rate is kept unchanged at -0.10% as expected.
Under the yield curve control framework, the central bank will still continue to purchases JGBs without an upper limit to keep 10-year yield at around 0%. But now, the bank will offer to purchase 10-year JGB yields at 0.50% every business day through fixed-rate operations, effectively allowing 10-year yield to rise towards 0.50% level.