Federal Reserve reintroduces large-scale Treasury bill purchases to manage liquidity and market stability

The Federal Reserve has quietly returned to the playbook of large-scale market operations, announcing a programme of short-dated Treasury bill purchases that begins on 12 December and runs through 14 January. According to the original report from the New York Fed, the Open Market Trading Desk plans roughly $40 billion in “reserve management purchases” over that interval, together with about $14.4 billion of reinvestment purchases of agency principal into T‑bills , a combined operation of just over $54 billion aimed at managing liquidity and stabilising market conditions.

The central bank has sought to frame the action as technical “reserve management” rather than a reprise of quantitative easing, emphasising purchases of bills and not longer‑dated coupons. The New York Fed’s operating policy documentation and a published FAQ make clear the Federal Open Market Committee directed the Desk to increase System Open Market Account holdings to maintain an ample level of reserves, buying Treasury bills and, if necessary, other Treasury securities with remaining maturities of three years or less; and to reinvest all principal payments from agency securities into T‑bills. The Fed said the bill purchases will help manage liquidity and preserve effective control of interest rates.

Market commentators and major banks have treated the shift as a material expansion of the Fed’s footprint in short‑term debt. Barclays has revised its modelling and now estimates the Fed could buy as much as $525 billion of T‑bills in 2026, up from an earlier forecast of $345 billion, reducing net issuance to private investors materially. JPMorgan and TD Securities have also signalled the central bank may absorb a larger share of issuance, and Bank of America warned the Desk may need to sustain an elevated pace of purchases for longer to add sufficient reserves and steady money‑market rates.

Bank of America’s head of short‑rate strategy, Mark Cabana, warned of the risk that purchases will need to be larger and last longer than currently outlined. He said reserve management purchases will add only about $80 billion of cash above expected liability growth by mid‑April, while BofA estimates roughly $150 billion will be needed to achieve the “ideal outcome.” Cabana also noted the Desk could shift to purchasing U.S. Treasury coupons out to three years if bill investors appeared to be “being adversely affected,” a move that would further blur the line between these operations and prior large‑scale asset purchases.

Traders have already reacted. Short‑term rate futures and two‑year swap spreads moved as markets priced the prospect of added central‑bank demand for bills and a recalibration of liquidity. Industry analysts say the purchases are expected to alleviate strains that emerged while the Fed allowed its balance sheet to shrink, and to act as a tailwind for swap spreads and SOFR‑fed funds basis trades.

The Fed’s step follows earlier adjustments to its balance‑sheet policy: in late October the FOMC announced it would roll over Treasury principal and reinvest agency principal into bills, explicitly signalling a preference for short‑dated paper to address repo and money‑market pressures. Reuters reporting noted market participants expect the move to ease money‑market stress even as some futures continue to point to tight near‑term funding conditions.

The NY Fed’s published schedule lists the daily purchases that will begin on 12 December, including an initial $8.2 billion tranche on the first day, and shows the Desk operating in a manner reminiscent of prior purchase programmes. The central bank’s language emphasises technical objectives, but market participants and some banks characterise the actions as a form of balance‑sheet expansion with tangible effects on issuance, liquidity and rates. Industry data and dealer commentary suggest the revival of sizeable Treasury bill buying will be closely watched for signs of how aggressively the Fed will need to act to restore desired reserve levels and normal functioning in short‑dated funding markets.