Catenaa, Sunday, August 16, 2026- The S&P 500 Index’s volatility curve indicates traders are relatively sanguine about upcoming risks as the earnings season comes to a close and the events calendar winds down.
The market is pricing in daily S&P 500 swings of less than 0.8% for the rest of the month, with Nvidia results and the annual Jackson Hole symposium being the key events. Meanwhile, the Cboe Volatility Index ended Friday at its lowest level of the year.
Yet behind the bullish metrics lies the potential for instability.
The FOMO-fueled demand for upside calls that triggered a collapse in short-dated volatility skew recently came just after a broad bid for index volatility and skew in late July, when traders were buying put option hedges.
The sharp reversal highlights the fragility of a market at the mercy of investor sentiment that’s quickly shifting from fear of a selloff to fear of missing out.
“What we’re seeing right now is because momentum strategies have attracted so much investor money, so much investor attention,” said Steve Sosnick, chief strategist at Interactive Brokers Group. “We’ve become hypersensitive to shifts in momentum.”
There are some technical reasons that could contribute to making the market more prone to sudden changes in sentiment. These include the current short-gamma dealer positioning, driven by both trading in S&P 500 options and rebalancing activity from leveraged exchange-traded funds.
In negative gamma, market makers have to buy stocks to hedge themselves when they rip and sell when they fall, exacerbating moves.
Meanwhile, the so-called short-dated iron condor strategy that was popular earlier in the year and helped dampen intraday price action has resurfaced on a smaller scale, UBS Group strategists wrote in a recent note, which potentially opens the door to greater price swings.
Subdued trading activity during the summer could further exacerbate market moves.
“The S&P options positioning landscape flipped quite dramatically around the start of August, as the index rallied from a region where dealers were long gamma, up into a region where they were managing short gamma risk,” said UBS derivatives strategist Kieran Diamond.
“This was compounded by record call buying, as well as a retreat from one of the most material suppliers of upside options, as the market started to squeeze,” he added, referring to the popular condor strategy on S&P 500 options expiring daily.
Still, strategies that benefit from quick shifts in sentiment have become more popular, along with intraday momentum trades to profit from wilder swings, according to Ritik Katte, Co-Founder and Chief Investment Officer at London-based hedge fund MCD Capital. His firm is positioned to benefit “if on either side skew explodes.”
“On the surface, the equity market looks remarkably calm,” said Tanvir Sandhu, Chief Global Derivatives Strategist at Bloomberg Intelligence. “Underneath, it’s anything but static: skew, gamma and options positioning are flipping rapidly.”
