A spike is flagged when current ATM IV is at least +30%
above the symbol's recent baseline — the average ATM IV of the last 30 days from scan history,
falling back to 30-day realized vol when no history exists. Each scan saves a snapshot so the
baseline gets better the more you run it. The yellow BIG MOVE badge is a
separate flag for |today Δ| ≥ 3%.
Scanned
Spikes
Biggest mover
Highest IV/HV
Results
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