What the Treasury is actually doing hereThe operation ran during a tight 20-minute window, from 1:40 to 2:00 p.m. Why the program exists in the first placeThe Treasury’s buyback program was significantly revitalized after 2023, following years of pandemic-era bond issuance that flooded the market with securities. When you issue trillions in new debt across dozens of separate auctions, you end up with a fragmented secondary market where many individual bond issues trade thinly. By purchasing older issues and retiring them, the Treasury reduces the number of distinct bonds floating around in the market. A $2 billion operation that draws $7 billion in offers leaves $5 billion worth of sellers without a match.