Bond Yields Resume Rise Despite Treasury Buyback Expansion, Nikkei Rallies 890 Points — US 30-year Treasury yields climb back to 5.247% after a brief retreat, while the 10-year yield rises to 4.685% as bond market selling resumes. Treasury’s expanded buyback program to $4B per operation provided only temporary relief. Japan’s Nikkei 225 surges 890 points…