The Federal Reserve is the majority holder of US Treasury bonds maturing in the 10-to-15-year window. That means the central bank, which is supposed to be a backstop for markets rather than the market itself, effectively controls the supply of one of the most important segments of the government debt curve.
How we got here
This concentration traces directly back to the Fed’s pandemic-era quantitative easing campaign, when the central bank hoovered up Treasuries at an unprecedented pace to keep borrowing costs low and financial markets functioning. At the peak, the Fed was buying roughly $80B in Treasuries per month, with a deliberate tilt toward longer-duration securities to push down long-term interest rates.
As of mid-August 2026, the Fed holds approximately $4.54 trillion in total US Treasury securities. Of that, roughly $1.62 trillion sits in securities maturing beyond 10 years. The overall balance sheet clocks in at about $6.75 trillion, with Treasuries representing the bulk of assets.
Quantitative tightening, the process of letting bonds roll off the balance sheet without replacement, has largely wound down. The Fed has been conducting limited reserve-management purchases since 2022, but the runoff has only modestly changed the composition of what the central bank holds.
Why this matters for the bond market
When one entity owns more than half of a particular maturity bucket, it changes how that market behaves in subtle but important ways.
First, there’s the liquidity question. Private investors, pension funds, insurance companies, and foreign central banks all need to trade these securities. When the Fed is sitting on the majority of available supply and not actively selling, the pool of bonds available for trading shrinks. Thinner markets tend to be more volatile, with prices swinging more sharply on relatively small trades.
Second, there’s the pricing signal problem. Treasury yields in the 10-to-15-year range are supposed to reflect the market’s collective assessment of future interest rates, inflation, and creditworthiness. When the biggest holder is a non-economic buyer, meaning it purchased bonds for policy reasons rather than return expectations, the signal gets muddied. Yields in this segment may be lower than they would be in a truly free market, which distorts borrowing costs for corporations, mortgage rates, and a host of other financial instruments benchmarked to Treasury yields.
The composition of who owns US government debt has shifted meaningfully over the past decade. Foreign investors now hold approximately 30% of publicly held Treasuries, a notable drop from nearly 50% roughly ten years ago. As international buyers have pulled back, domestic holders, led by the Fed itself, have become increasingly central to the functioning of the Treasury market.
What comes next
The Fed faces a genuine dilemma. Holding these bonds to maturity is the path of least disruption, but it means the central bank remains a dominant force in the long-end of the Treasury market for years to come. Actively selling would accelerate the normalization of its balance sheet but could spike yields and roil markets, exactly the kind of financial instability the Fed is mandated to prevent.
There’s also a fiscal dimension. The US government continues to run substantial deficits, which means new Treasury issuance keeps flowing. If the Fed isn’t buying at anything close to its former pace, and foreign demand has structurally declined, someone else needs to absorb the supply. That someone is likely domestic banks, money market funds, and retail investors, all of whom tend to demand higher yields as compensation.