Sept. 30 $202B Treasury Coupon Settlement May Test Bitcoin

A $202 billion U.S. Treasury coupon settlement is scheduled for Sept. 30. The settlement includes reopenings of a 10-year Treasury inflation-protected security and two-, five- and seven-year notes with public face amounts of $19 billion, $69 billion, $70 billion and $44 billion, respectively. Treasury estimates $143.58 billion of publicly held coupon debt will mature that day, leaving $58.42 billion in net new face value. That net figure measures securities issued beyond maturities and is not a direct measure of cash taken from bank reserves; auction pricing, inflation adjustments on TIPS and Treasury spending can change the cash effect.

The New York Federal Reserve calendar shows roughly $15.6 billion of reinvestment purchases between Sept. 15 and Oct. 14 and no separate reserve-management purchases. The Fed is replacing principal from maturing mortgage securities with Treasury bills while its separate program for adding reserves remains paused. Roberto Perli commented on Sept. 22 that “reserves appeared ample and funding markets had remained orderly.”

SOFR, the Secured Overnight Financing Rate that tracks overnight borrowing costs secured by Treasury collateral, was 3.88% on Sept. 24, up from 3.85% on Sept. 18 and 21. The rate remained below the roughly 3.90% the Fed pays on bank reserves, which market participants use as a reference point for repo stress.

Market participants will watch whether SOFR moves around the quarter-end settlement and how long any change persists relative to the Fed’s reserve rate and other repo measures. Bills auctioned just before quarter-end are scheduled to settle on Oct. 1 and are not part of the Sept. 30 coupon figures.

Crypto traders will monitor several on-chain and derivatives indicators for potential spillovers. Measures include perpetual-futures funding rates, the futures premium over spot, market depth on spot order books, leverage and open interest in derivatives, and net spot flows. Perpetual-futures funding is a recurring payment between long and short positions that keeps perpetual contracts aligned with spot prices; shifts in that funding rate can reflect changes in leverage or demand for crypto financing.

A previous episode of lower derivatives exposure followed a Treasury-yield shock. Market participants intend to compare persistent, correlated changes across fixed-income funding metrics and crypto leverage measures to assess whether any link exists after the Sept. 30 settlement.