What if crowded equity dispersion trades blow up?
Crowded short-correlation dispersion books imploding when single-stock vol spikes against muted index vol guts exotic desks and forces index-vol buying — VIX and the risk-parity unwind lead, dragging high-beta and credit. Rhymes with the Aug 2024 vol spike and the 2018 Volmageddon short-vol blowup. The mechanism is dealer hedging of correlation exposure, not macro fundamentals. Forward angle: post-2024 the dispersion trade is more crowded than ever; the tell is index vol catching up to single-name vol — own index gamma into earnings-heavy windows.
Every number ships with its receipt — the odds, the range, the precedents, and a public grade at Reality Check. The statistical machinery that produces it is proprietary.
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 Tail risk 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. Crowded short-correlation dispersion trades implode when single-stock vol spikes against muted index vol, gutting exotic-derivative desks. The trigger decomposes into signed root‑shocks — Volatility (VIX) ▲ · Financial conditions ▲ · Risk appetite ▼ — which propagate through our causal graph to the markets below.