Operation Twist (2011-2012)
The Fed sold short-term Treasuries and bought long-term ones, aiming to push down long yields without printing money. It repeated the program in 2012.
Long yields dipped modestly, then resumed their drift higher within months.
Studies found the effect on yields small and temporary, cementing a verdict that duration-based interventions barely move markets against fundamentals.
Bessent's buybacks are a duration-based intervention, and the 2011 experience predicts the muted, temporary effect investors are pricing in.
