US Treasury bonds with maturities of more than 15 years have the worst 10-year return in 90 years

On January 17th, according to a post by Matthew Sigel, the Director of Digital Asset Research at VanEck, on x, the 10-year rolling annualized yield of US 15-year and above government bonds has fallen into negative territory, marking the worst performance in 90 years. This is the lowest level in recorded history since 1936.