Long-term US Treasuries with maturities of 15 years or more have experienced an unprecedented decline, averaging a negative 2% annual return over the previous decade. This performance marks the most significant downturn for the asset class in recorded history.
Current market conditions represent only the second instance in data dating back to 1936 where Treasuries have yielded negative returns over a 10-year timeframe. The ongoing slump highlights a historic shift in the bond market's long-term performance metrics.