Earnings superweek — when several mega-cap giants report in the same week — is a recurring high-volatility stretch. Because these companies make up an outsized share of the index, their after-hours moves can gap SPY repeatedly and reshape its dealer map on consecutive nights, making for an unusually catalyst-dense few days.
Why superweek moves the index
Thanks to extreme concentration, a single mega-cap's earnings surprise can move the whole index — and superweek stacks several of them back-to-back. Each big report (usually after the close) can gap SPY overnight, so the map you trade Wednesday morning may be built on Tuesday night's earnings reaction, and Thursday's on Wednesday's. The cumulative effect is a week where the dealer map keeps getting rebuilt on fresh single-stock news.
The volatility rhythm
Superweek has a characteristic rhythm: IV ramps into the big reports (the market pricing potential moves), then crushes after each name reports and its uncertainty resolves. Intraday sessions can be choppy as the market digests the prior night's earnings and positions for the next. A blockbuster or disaster from the biggest names (especially NVDA) can dominate the entire week's tone.
In a concentrated index, earnings superweek is the market's earnings, delivered a giant at a time. Each night rewrites tomorrow's map.
Trading it
Know the schedule — which mega-caps report which nights — so overnight gaps don't blindside you, and be cautious about holding 0DTE positions into a major after-hours report (gap risk). Trade each morning's fresh map on its own terms, respect the elevated volatility, and size for the gaps. NoVo redraws the dealer map on live data each session, so the post-earnings structure is current — but the judgment to respect a catalyst-dense week is yours.