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Fed's Overnight Reverse Repo (ON RRP) Balance Bottoms Out at Onl

2025-12-28

Core Overview: Liquidity Buffer Officially Hits Bottom

According to the latest data released by the Federal Reserve (January 19, 2026), the usage scale of the Overnight Reverse Repurchase Agreement (ON RRP) was only $3.506 billion. Although slightly rebounding from the previous value of $1.222 billion, the overall trend has confirmed "bottoming out." Compared to the brief surge to $105.9 billion on December 30, 2025, due to the quarter-end "window dressing" effect, funds quickly returned to the market after the new year, causing the data to fall below the $5 billion threshold multiple times in mid-January. This means the ON RRP's function as a reservoir for absorbing excess market funds has effectively exited the stage.

Key Details: The Massive Shift from $2.5 Trillion to Single Digits

Reviewing historical data, the ON RRP hit a record high of $2.553 trillion on December 29, 2022, serving as the main parking spot for Money Market Funds (MMFs) at the time. However, with the Fed's continued quantitative tightening (QT) and the US Treasury's massive issuance of Treasury bills (T-bills), the balance has shrunk drastically over the past two years. The current level of $3.5 billion indicates that the market no longer has excess funds willing to park at the overnight rate provided by the Fed, as funds have fully shifted to the private market or the government bond market.

In-Depth Attribution: Money Fund Abandonment and Bond Supply Effects

Commentaries from analytical institutions and Wolf Street point out that the exhaustion of the ON RRP stems mainly from the asset allocation shift of Money Market Funds (MMFs). Since the yields on short-term Treasury bills (T-bills) continue to be higher than the fixed rate of the ON RRP, coupled with the Treasury expanding debt issuance to fill the deficit, funds originally parked at the Fed were attracted to purchase T-bills. Furthermore, as the Fed's balance sheet shrinks, excess liquidity within the financial system was already being drained; the ON RRP reaching zero is viewed as an inevitable milestone in the QT process.

Outlook and Risks: Repo Rate Volatility and the Endgame of QT

Short-term (1-2 months): As the ON RRP buffer disappears, any sudden liquidity demand (such as tax season or month-end settlements) will directly impact bank reserves. Investors need to closely monitor whether the Secured Overnight Financing Rate (SOFR) breaches the upper limit of the Fed's interest rate corridor, which will be the primary signal of liquidity pressure. Medium-term (3-6 months): The exhaustion of the ON RRP is typically seen as a precursor indicating that the Fed's quantitative tightening (QT) policy must be adjusted. If signs of a shortage in bank reserves begin to appear, the Fed is highly likely to announce a halt to balance sheet reduction in the first half of this year, or even restart some form of liquidity injection, to avoid a repeat of the 2019 Repo crisis.

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