What if a crypto index ETF rebalance sparks a selloff?
A quarterly crypto index-ETF rebalance mechanically dumps a lagging constituent into a fixed window, producing a liquidity-driven air-pocket in that token that bleeds into ETH/SOL/BTC beta. Rhymes with equity index-reconstitution dislocations (Russell rebalance) and the Oct-2025 forced-liquidation cascade. Forward angle: thin alt order books make crypto rebalances far more price-impactful than their equity analogues, so front-running the known rebalance date is the edge.
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 0–6 months 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 mixed shock. A large multi-asset crypto index ETF's quarterly rebalance dumps a lagging constituent, triggering a sharp, liquidity-driven drop in that token. The trigger decomposes into signed root‑shocks — Crypto confidence ▼ · Crypto liquidity ▼ — which propagate through our causal graph to the markets below.