Causal implications · Liquidity Central Banks · 2026-09-09

    Central bank neutrality transitions toward reserve stability as term premia rebuild.

    HA·C:M
    Regime read

    The neutral liquidity regime, characterized by a 3.63% Fed Funds Rate and positive 0.41 2s10s slope, signifies a transition from active stimulus to balance sheet stability. Transmission occurs through the portfolio rebalancing channel, where tight 2.67% HY spreads face pressure as reserve levels normalize. Higher 10Y yields at 4.78% reflect the waning impact of central bank duration suppression.

    Transmission channels (asset · direction · mechanism)
    UST 10Y
    ▲higher
    Stock effect of central bank holdings reduces available float, depressing term premia.
    -0.08 bp per 10bn reserves3m
    S&P 500
    ▼lower
    Reserve scarcity increases search costs in repo markets, raising the effective discount rate for risky assets.
    magnitude uncertain6m
    HY OAS
    ▶◀widens
    Portfolio rebalancing channel: lower excess liquidity pushes investors toward higher-quality substitutes.
    +2.50 ±0.80 bp per 100bn drain3m
    USD broad
    ▲higher
    Contraction in global dollar liquidity increases the convenience yield on US dollars.
    +0.40 pct appreciation per 1sd liquidity shock1m
    Exposed sectors / factors
    FinancialsReal EstateEmerging Markets Equity
    What confirms it
    • ▲SOFR-FFR Spread Widening
    • ▲Rising Reverse Repo Usage
    What would invalidate it
    • ▼Yield Curve Inversion Deepening

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