Options market shows extreme positioning as dealer gamma surges

Goldman Sachs reported that dealer gammaThe rate of change of delta - the option's curvature. positioning has moved from historic lows to near record highs, a rare and consequential shift in options market structure. Concurrently, call skew is hitting all-time records while put skew has collapsed to near historic lows, indicating that market participants are aggressively long calls with minimal downside hedging. This extreme positioning is typical of late-stage rallies and often precedes sharp reversals.

The gammaThe rate of change of delta - the option's curvature. surge reflects rapid accumulation of call options by retail and momentumThe empirical fact that winners keep winning over the medium term. traders, who are now forced to chase the rally higher as their positions profit. Dealers, who are short gamma, are in a defensive posture and buying stock to hedge, which creates a self-reinforcing loop. However, once the flow reverses (either from profit-taking or from a shock like a hotter-than-expected CPI), dealers will have to sell aggressively, potentially triggering a cascade of losses for leveraged long traders.

Market technicians warn that S&P 500 call skew has reached record extremes and that SPY is testing all-time highs with minimal conviction. The Russell 2000 and Nasdaq are also overbought by traditional momentumThe empirical fact that winners keep winning over the medium term. metrics. While the bull case rests on record earnings beats and AI capex tailwinds, the options structure suggests that most bullish positioning is already baked in and is vulnerable to any disappointment or exogenous shock.

The Iran tension, oil spike, and Wednesday's CPI print are three near-term catalysts that could trigger a gammaThe rate of change of delta - the option's curvature. unwind. If volatility spikes, or if institutional hedging demand resurfaces, the unwind could be severe and sudden.