US Treasuries, the Fed, and DXY: The market enters a dangerous phase
The US bond market continues to demonstrate that the main problem now lies not only in the current Fed rate but also in the cost of long-term US financing.
On Wednesday, the US Treasury announced an increase in the maximum volume of long-term Treasury buybacks from $2 billion to $6 billion. Theoretically, this should have supported long bond prices and curbed yield growth. In practice, the reaction was the opposite: the 10-year yield rose to its highest level since November 2023, and 20- and 30-year yields also increased.
This is an important signal.
$6 billion is a very small volume relative to the approximately $32 trillion Treasury market. Therefore, the buyback itself cannot change the fundamental supply and demand balance. The market effectively received confirmation that the Treasury sees the problem at the long end of the curve and is trying to curb it, but the proposed instrument is not yet sufficient to change investor expectations.
The 10-year yield is already above 4.9%, and a move to 5% looks increasingly less hypothetical. The real yield is around 2.5%, and breakeven inflation is around 2.4%, with both components rising in recent days.
This is where the main risk lies.
If the increase in long-term yields is explained by a higher real rate due to strong economic growth and increased productivity, for example, thanks to AI, this is not necessarily a negative signal for risk assets.
But if the main reason is increasing Treasury supply, a large fiscal deficit, debt burden, and renewed inflationary expectations, then the situation is much more complex. In this case, rising yields mean not a stronger economy but an increase in the risk premium for holding US debt.
And this is precisely what the market is trying to assess now.
It is also important to separate the short and long ends of the curve. Treasury buybacks can affect the relative cost of long bonds and improve liquidity, but they cannot change the trajectory of the Fed's rate.
The SOFR rate reflects expectations for the Fed Funds Rate. Therefore, if the market starts to price in higher Fed rates over a longer horizon, the Treasury cannot simply force the entire yield level back down by buying back bonds.
That is why the synchronous rise in long SOFR and Treasury yields after the buyback announcement is an important signal: the problem is not only in the technical supply of bonds but also in changing rate expectations.
Pressure is also increasing across the curve. The 2-year carry spread is approaching 90 basis points, which is already significantly above the 75 basis points level traditionally perceived as a signal of increased risk of further monetary policy tightening. The compression of the 2/5/10-year butterfly has practically disappeared.
In fact, the market is starting to behave as if the risk of a higher Fed rate is returning to the system.
This creates an interesting configuration for the DXY.
In the first stage, rising Treasury yields and more hawkish Fed expectations should support the dollar. Higher returns on US assets increase the relative attractiveness of the USD and support dollar carry.
However, if the increase in long yields shifts from a story about a strong economy to a story about fiscal risk, inflation risk, and term premium, the DXY's reaction may become less straightforward.
Then we get two different forces:
Higher yields because of stronger growth / higher real rates → USD positive.
Higher yields because of fiscal stress / inflation risk / Treasury supply → initially USD positive, but potentially USD negative if confidence in US assets deteriorates.
Therefore, it is now important not just to look at the direction of the 10Y but at why it is moving.
If the 10Y goes to 5% along with real rates, strong economic data, and rising rate expectations, this is primarily a story about a stronger USD and tighter financial conditions.
If the 10Y continues to rise due to term premium, fiscal supply, and inflationary expectations, and the Fed cannot convincingly control the long end of the curve, then this is already a problem for the entire system of risk assets.
A particularly dangerous point will be the consolidation of the 10Y above 5%. The 5% level itself does not mean a crisis, but after it, the market may start to test significantly higher levels. A scenario of moving to 6% would already mean a completely different configuration of financial conditions.
Against this background, corporate credit does not yet show panic – spreads are widening, but without dramatic movement. However, the longer real yields remain high, the more difficult it is for companies that need refinancing.
Oil also adds to inflation risk: WTI approached $100 per barrel, while Brent had already traded near that level. If the energy component continues to push inflation expectations, this could further complicate the Fed's task.
Therefore, the current market configuration should be read through one main chain:
Fiscal deficits → Treasury supply → Term premium / inflation expectations → Long-term yields → Financial conditions → Fed expectations → USD → Risk assets
The Treasury can currently support demand for long bonds, but it cannot change the fundamental trajectory of the Fed's rate or the problem of the fiscal deficit through buybacks.
That is why the market's reaction to the increase in buyback to $6 billion was more important than the volume itself. Investors saw that the Treasury is already actively reacting to the level of long yields, but they have not yet seen an instrument capable of changing the fundamental balance.
For FX, this means that the DXY needs to be assessed together with the Treasury curve, real yields, and Fed expectations, and not in isolation, each factor separately.
For now, rising yields remain a bullish factor for the USD if accompanied by a hawkish repricing of the Fed. But the more the rise in long rates is explained by fiscal/term-premium risk, the higher the probability that Treasury yields and DXY will begin to move less synchronously than in a classic risk-off scenario.
The rest of 2026 for the bond market could be a test of precisely this: is 5% on the 10Y the upper limit due to a strong economy, or is it just an intermediate point in the process of re-evaluating the cost of US debt.