Three surprises in three weeks
Three unscheduled interventions in three weeks have moved the currency instead of the yield, which is the expensive way for a fiscal problem to resolve.
On Wednesday, without warning, the US Treasury announced it would at least double the size of its buybacks of longer-dated debt, from $2bn to $4bn per operation, running from 9 September to 4 November. On Thursday Scott Bessent said the number could go higher still. On Friday the 30-year yield closed at 5.27%, the highest in nearly two decades, and the dollar hit a three-month low against the euro. Buybacks are ordinary housekeeping. Doing them unscheduled is not. As the FT puts it, predictability is the whole game in a $32tn market, and support measures get read as an admission that something has broken (FT). The mechanism matters. A buyback does not reduce the debt; it swaps the maturity profile, retiring long bonds and funding that with bills. It removes duration from the market without removing a dollar of borrowing. If the fiscal path is unchanged — and the debt crossed $40tn this week, with the $25bn 30-year auction clearing at 5.216%, the highest for that tenor since 2001 — then capping the yield does not remove the adjustment. It relocates it. "Bessent's efforts to suppress US yields haven't done much for US yields, but it's undermined the dollar," Marc Chandler of Bannockburn told Reuters. "The market is pushing back." The third surprise is the one fewest people noticed: three weeks ago Bessent bought yen, and said future interventions would use an unusual facility designed specifically to avoid selling Treasuries. Bond investors read that as an attempt to stop Japan funding yen support out of its stock of US debt. Warsh speaks at Jackson Hole on Friday.