After a turbulent month, the volatility of S&P 500 index options continues to show an upward trend. The benchmark index ended its three-week winning streak, with the CBOE Volatility Index (VIX) briefly surging above 20 on Friday, signaling mounting market stress. The recent pullback reversed the accelerated rally that had repeatedly set record highs, characterized by simultaneous increases in spot prices and volatility—a deviation from the typical inverse relationship.
Multiple factors contributed to heightened market volatility in mid-October and last week. Sharp swings in individual stocks following earnings reports underscored growing market fragility. Additionally, the absence of U.S. government economic data forced macro analysts to seek alternative sources. These developments suggest that the summer's market calm is unlikely to return, especially with the Federal Reserve's December rate decision looming, a potential government shutdown disrupting air travel, and rising layoffs pointing to economic weakness.
Maxwell Grinacoff, Head of U.S. Equity Derivatives Research at UBS, noted in a call, "Investors are acutely aware of increasing market fragility. Even if the S&P 500's moves remain relatively muted, it takes very little to trigger a 3% drop or a five-point spike in the VIX." The VIX's pullback has narrowed—it bottomed just below 16 in October. Earlier in the summer, the theoretical floor of the VIX was a key focus, with its risk premium exceeding realized volatility before Trump's tariff threats in early October.
Grinacoff added that investors have been puzzled by the VIX's persistence above 16 or 17 despite the S&P 500's record highs. One reason is traders' dual desire to chase gains while hedging downside risks. "As the market climbs, investors are definitely hedging, but they’ve also been aggressively buying call options, with unusually strong demand continuing into Q3," he said.
Others attribute rising stock volatility to the U.S. government shutdown and congressional gridlock, which could have ripple effects on Fed policy. Analysis shows the VIX remains higher than last year’s levels, with spot price rallies and volatility increases becoming more pronounced amid policy uncertainty and momentum-driven trading.
Bank of America derivatives strategists warn that heightened asset price volatility is one of the clearest signs of a bubble. They compare current conditions to the early-2000s tech bubble, where prices detached from fundamentals due to momentum. A 2024 study they cited also highlights how economic turbulence reduces earnings predictability, exacerbating market swings.
The combination of larger price swings and momentum chasing has flattened the call skew for some U.S. stocks, particularly in tech. The AI sector’s October surge bears similarities to the dot-com bubble, prompting investors to buy calls on companies that could benefit from a potential market crash—making "two-way risk" a buzzword among derivatives strategists.
The critical question is the bubble’s current stage, as its existence doesn’t guarantee an imminent burst. Option values may find support from broader market volatility, with the S&P 500’s 30-day realized volatility more than doubling over the past month to its highest since June. The VVIX Index ("volatility of volatility") is also rising as investors hedge with VIX options. Early last week, some traders unwound bearish VIX bets, further signaling expectations of sustained high volatility.
While single-stock volatility initially outpaced the broader index during earnings season—with the Cboe S&P 500 Constituent Volatility Index hitting record highs—this trend reversed as macroeconomic concerns intensified. With earnings season winding down, individual stock volatility may continue to narrow as company-specific news dwindles. Analysis suggests that extreme demand for upside exposure had widened the gap between single-stock and index volatility, but this is now reversing as earnings season concludes.