What if Moody's cuts Italy to junk and forces BTP selling?
An Italy junk cut forces index ejection from IG benchmarks, so the cleanest trade is short BTPs / long Bund: the BTP-Bund spread gaps wider and EU bank credit (which warehouses sovereign paper) leads equities down. Rhymes with the 2011-12 euro crisis when 10y BTP yields blew past 7% and Italian banks cratered. Transmission runs through French and German banks holding peripheral debt; the forward twist is the ECB's TPI backstop, which can cap fragmentation far faster than 2012 — fade the most extreme spread widening.
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The butterfly cascade
How this trigger trickles across markets, left → right — the root shock, its first‑order moves, then the ripple effects. Drag any node; tap a market for its real price history.
Resolution timeline — how this probability is moving
Our model's odds (electric blue) over time vs the market's (Polymarket, amber), from the past toward the 1–3 years horizon. Each dot is a real macro event that nudged the probability — green pushed it up, red pushed it down. Tap a dot for the source. Loading the probability audit trail…
What it would mean
If this plays out, it is a risk-off shock. Moody's downgrades Italy below investment grade, forcing index-driven forced selling of BTPs. The trigger decomposes into signed root‑shocks — Credit spreads ▲ · Financial conditions ▲ — which propagate through our causal graph to the markets below.