Estimated gamma flip, call wall, put wall, and dealer regime for Apple Inc. (AAPL) — the largest US company by market cap, with one of the deepest options markets. Levels derived from previous session's closing data, updated daily.
AAPL carries one of the deepest, most stable options markets of any single stock, and as the largest weight in the major indices its gamma positioning has broad significance. Apple tends to run in positive-gamma regimes for extended stretches, which shows up as the orderly, low-volatility grind the stock is known for — dealers quietly buying dips and selling rips to stay hedged around heavily-owned strikes.
That stability makes AAPL's call wall and put wall reliable range markers in calm markets. The more interesting signal comes when Apple's gamma flips negative, usually around earnings or a broad-market risk-off move: the same options machinery that dampened volatility starts to amplify it, and AAPL's contribution to index moves grows. Because of its index weight, an AAPL regime change often confirms what SPY and QQQ are signaling.
The dashboard below estimates AAPL's gamma flip and walls from end-of-day data. Read it alongside SPY for a sense of how much of the broad-market regime the megacaps are setting.
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