The Bank of Japan is expected to hike interest rates Friday for the first time since January, pushing them to their highest level in 30 years and potentially exacerbating turmoil in debt markets. Yields on 30-year bond yields reached a record high in early December, and 10-year yields last week hittheir highest level in 19 years.

The Bank of Japan is expected to hike interest rates Friday for the first time since January, pushing them to their highest level in 30 years and potentially exacerbating turmoil in debt markets. Yields on 30-year bond yields reached a record high in early December, and 10-year yields last week hittheir highest level in 19 years.