Liquidity • Central Bank

1. The Foundation of Central Bank Accounting

The Federal Reserve's balance sheet (reported weekly in the H.4.1 Statistical Release) is the master ledger of the U.S. monetary system. Under double-entry central bank accounting, every asset acquired by the Fed creates an equal and offsetting liability in the financial plumbing:

2. Key Assets on the Fed Balance Sheet

Asset Category	Description	Market Significance
SOMA U.S. Treasuries	Nominal notes, bonds, TIPS, and T-bills held in the System Open Market Account.	Influences term premium and long-duration Treasury yields.
SOMA Agency MBS	Fannie Mae, Freddie Mac, and Ginnie Mae mortgage-backed securities.	Directly tightens or eases residential mortgage rates and mortgage spreads.
Central Bank Liquidity Facilities	Discount Window loans, Standing Repo Facility (SRF), and emergency credit programs.	Emergency backstops that spike during banking panics (e.g. SVB crisis 2023).

3. Key Liabilities: The Three-Bucket Liquidity Model

To understand net financial liquidity available to risk assets, institutional analysts decompose the liability side of the Fed balance sheet into three fluctuating buckets:

1. Bank Reserves (High-Powered Money): Commercial bank cash deposits at the Fed. Highly stimulative to lending and risk asset multiples.
2. Treasury General Account (TGA): The U.S. government's checking account. When TGA rises, cash is locked away from the financial system.
3. Overnight Reverse Repo Facility (ON RRP): Cash parked overnight by money market funds. Inactive liquidity that does not circulate in commercial banking.

4. Calculating Net Fed Liquidity

The mathematical formula tracked by quantitative macro funds to measure net domestic liquidity is:

Expansions in Net Fed Liquidity consistently correlate with rising equity multiples, compressed credit spreads, and looser Financial Conditions.

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