The 30-year Treasury yield has breached a psychologically critical level, sending ripple effects through mortgage markets, equities, and the broader economy. The 30-year US Treasury yield has crossed above 5%, a threshold that Wall Street treats less like a number and more like a fire alarm. The 10-year yield, meanwhile, is hovering near 4.5%, compounding a bond market selloff that is starting to feel less like a correction and more like a structural shift [...]