With
Alibaba (BABA)
watchlist
at $99.54 , it is $1.06 below the stated $100.60 zero-gamma level . If that level accurately marks the transition to net negative dealer gamma, dealer hedging can become volatility-amplifying :
On further declines: dealers who are short gamma generally need to sell stock as BABA falls to maintain hedges. That mechanical selling can reinforce downside momentum and make intraday swings larger.
On rebounds: the same dynamic can require dealers to buy as the price rises, potentially accelerating a rebound. In other words, moves in either direction can become less dampened.
Around $100.60: the level may act as an important regime boundary rather than a guaranteed resistance level. A sustained reclaim above it could shift hedging flows toward volatility suppression; rejection below it leaves the market more exposed to momentum-driven moves.
The effect is usually strongest when price is close to large, near-dated option strikes and trading volume is sufficient for hedge adjustments to matter. It can weaken rapidly as options decay, positions are closed or rolled, or fresh option flow changes the dealer gamma profile.
Information is for reference only and does not constitute investment advice.
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