Shock Inference Lab

BoJ widens YCC band

2022-12-20 · Japan · monetary · severity 4/5

Surprise YCC tweak; JGB yields jump; yen rallies; global duration repriced.

Pre/post market reaction

WindowJP 10Y ΔUS 10Y ΔSpread Δ
1d0.00pp0.00pp0.00pp
1w0.00pp0.00pp0.00pp
1m+0.03pp+0.03pp0.00pp
3m+0.11pp+0.13pp-0.02pp

Yields at monthly resolution; sub-month windows interpolated. pp = percentage points.

Central-bank-led duration shock

Monetary surprise drives global duration.

Inference scores

no-signal
confidence: high

No abnormal yield movement detected after factor-model controls.

Early warning31/100

Abnormal yield move before the event (90d proxy).

Reaction33/100

Abnormal yield move after the event (1m / 3m).

Constraint19/100

Lead/lag band: no-signal.

Amplification1/100

Post-event move beyond pre, on a crisis backdrop.

Confidence90/100

Severity × benchmark coverage × data coverage.

v1 scores use a simple factor model on monthly yields. See docs/METHODOLOGY.md.

AI Inference

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