The Department of the Treasury made a surprise move after bond yields reached their highest levels in nearly two decades. The decision was made to double planned purchases of long-term bonds, easing pressure on the market. Following the announcement, bonds rebounded, causing a drop in yields and providing some relief.

This change comes after a massive sale earlier in the week that raised yields to their highest levels in years worldwide. Bond yields and prices move in opposite directions, and the yield influences interest rates across the economy. This year, yields have surged, increasing debt costs.

Further details on the Treasury's move and its impact on the market are available from the source, including the effects on the economy and interest rates.