Overview
This series explains why a stable EFFR can coexist with tighter funding in the observed smaller-bank channel. It moves from EFFR’s volume-weighted market population and the ample-reserves framework to bankers’ banks, pooled reserves, and BFFR; compares September 2019 with March 2023; then contrasts bankers’ bank lending with FHLB advances. The practical conclusion is conditional: identify each rate’s lenders, borrowers, reserves, timing, and alternatives before inferring funding stress. BFFR is a segment signal, not a census or universal crisis threshold.
Learning outcomes
- A stable EFFR reflects control of a broad benchmark, not equal liquidity access for every bank.
- BFFR isolates bankers’ bank lending to domestic bank borrowers, so it is a segment signal rather than a census.
- September 2019 and March 2023 show that EFFR–BFFR divergence can reveal uneven funding conditions.
- FHLB advances and bankers’ bank loans have different collateral, capacity, timing, and governance constraints.
- A high BFFR supports a conditional funding-stress inference, not a universal banking-crisis diagnosis.
Keywords
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PlansFAQ
Why can EFFR stay calm when smaller-bank funding tightens?
EFFR can stay calm because its volume-weighted median is shaped mainly by high-volume transactions, especially lending by FHLBs, while a smaller-bank network may face tighter conditions through bankers’ banks.
What does BFFR measure?
BFFR is the daily volume-weighted median of identified overnight federal funds loans from bankers’ banks to domestic bank borrowers. It measures that defined channel, not every smaller bank or every liquidity route.
What did September 2019 and March 2023 show?
September 2019 showed a repo disturbance and EFFR briefly above the target range while BFFR moved little; March 2023 showed historic-high BFFR and declining bankers’ bank reserves while EFFR traded about 7 basis points below IORB. The episodes show uneven conditions, not a universal winner between the rates.
Are bankers’ bank loans and FHLB advances interchangeable?
No, they are separate liquidity routes. FHLB advances depend on collateral, haircuts, exposure limits, timing, and credit-risk controls, while bankers’ bank lending reflects pooled reserves and later-day channel conditions.
Does a high BFFR prove that all smaller banks face funding stress?
No, a high BFFR does not prove that all smaller banks face funding stress. It indicates more expensive or constrained overnight funding in the observed bankers’ bank channel, not universal distress or closed alternative routes.