Treasury's $1.6T Cash Drawdown: Bill Issuance Slashed Mid-Quarter as RRP Hits Zero [Asymmetric Risk Analysis]

The $1.6 Trillion Question: Why Treasury Yields Are Falling at the Front End

Treasury yields are falling at the front end because the Treasury is draining its cash pile to pay bills, flooding the market with liquidity while simultaneously cutting bill supply. The Treasury General Account (TGA) has plunged from $1.6 trillion to $1.48 trillion in just two weeks, and the reverse repo facility (RRP)—the Fed’s overnight parking lot for excess cash—now sits at zero. In plain English: the government is emptying its checking account to pay its bills, and the banking system’s spare cash has already been lent out. This double drain leaves money market funds with fewer places to park cash, forcing them to bid up the price of short-term government debt and push yields lower. The 4-week bill yield has dropped 12 basis points to 3.95% since Monday, while the 3-month bill fell 8 basis points to 4.02%. The 10-year yield, meanwhile, ticked up to 5.07%, steepening the curve as investors flee the front end for duration.

The RRP at Zero: What Happens When the Parking Lot Is Full

The reverse repo facility hitting zero means the Fed’s overnight parking lot for excess cash is full—there’s no more room for money funds to stash cash. This is a seismic shift: for years, the RRP absorbed trillions in excess reserves, but now it’s empty. Money market funds, which manage over $6 trillion in assets, are scrambling for collateral to meet regulatory requirements. The result? A fierce bidding war for Treasury bills, driving their yields down and forcing funds to buy longer-dated paper or rotate into riskier assets. “This is the plumbing of the financial system, and it’s starting to rattle,” says a senior fixed-income strategist at a primary dealer. “The RRP going to zero is the canary in the coal mine for collateral scarcity.”

Why Treasury Yields Are Rising Today (Spoiler: It’s Not What You Think)

The 10-year yield is rising today because the front-end liquidity flood is pushing investors out of short-term bills and into longer-dated debt, steepening the curve. The 10-year yield climbed to 5.07% from 5.05% yesterday, while the 2-year yield fell 3 basis points to 4.85%. The 2s10s spread widened to 22 basis points, its steepest since August. This is not a signal of economic growth—it’s a mechanical reaction to collateral scarcity. As money funds dump bills, they’re forced to buy longer paper, pushing long-end yields up. The 30-year yield also rose to 5.32%, up 4 basis points. So next time someone asks why Treasury yields are rising, tell them: it’s the plumbing, not the economy.

Positioning & Liquidity Map: Who Is Trapped?

Money market funds are the most trapped—they’re sitting on massive cash piles with nowhere to park it, forced to buy bills at negative yields or extend duration. Hedge funds that are short the front end are getting squeezed as bill yields plummet. The marginal buyer right now is the Treasury itself, buying back bills and injecting liquidity. The marginal seller is the Fed, which is still running off its balance sheet (QT) but at a slower pace. Stop-loss clusters are likely around 3.90% on the 4-week bill—if yields break below that, expect a cascade of buying. On the flip side, if the 10-year breaks above 5.20%, a sell-off could accelerate.

Forward Scenarios & Probability Matrix