Behind the Chip Stock Rally: This 'Risk Indicator' Has Soared to a Ten-Year High!

The S&P 500 index appears calm on the surface, but stock dispersion is at elevated levels. When implied correlation falls to freezing point, risk may be repriced in an instant, with the leading chip stocks especially worth watching.

Michael Kramer, founder of Mott Capital Management, said that although the S&P 500 index continues to rise, the internal structure of the market is showing clear divergence, especially in the technology sector, where potential risks are accumulating.

A prominent feature of the current market is the severe divergence in individual stock movements. Taking technology stocks as an example, Meta Platforms' stock price is near a 52-week low, while Micron Technology (MU.O) and Advanced Micro Devices (AMD.O) have risen sharply. This phenomenon of 'some rising while others falling' is called 'dispersion,' meaning that the rise of a few stocks masks the volatility of the overall index, making the market appear more stable than it actually is.

Risk is manifesting through volatility indicators. The S&P 500 component dispersion index is currently at a high level, with historically higher levels only seen during the pandemic crash in March 2020 and the 'tariff shock' in April 2025.

Specifically, there is a significant divergence between individual stock implied volatility and overall index volatility. The Cboe Volatility Index (VIX) is currently around 17, in a relatively moderate range; but the measure of individual stock volatility (VIXEQ) is near 46, at historically high levels. The gap between them has widened to the most significant level since 2015.

This phenomenon means that market risk has not disappeared but has shifted from the index level to the individual stock level. As Kramer pointed out, investors are underestimating the accumulation of risk in individual stocks.

At the same time, market implied correlation is at a low level. The three-month implied correlation index is currently below 10, indicating weak linkage between individual stocks. Historically, similar levels were only seen in the summer of 2024, when the Bank of Japan's unexpected interest rate hike triggered a sharp appreciation of the yen, followed by a rapid expansion of market volatility.

In the current environment, once an unexpected event occurs, the market may quickly reprice risk, and the low-volatility state may rapidly turn into sharp fluctuations.

Kramer believes that the sectors with the highest implied volatility will bear the brunt, with the semiconductor industry being particularly worth watching. Since the end of March 2026, the stock prices of Micron and AMD have both more than doubled, expectations for AI-related spending have been continuously raised, valuations have expanded rapidly, and options trading activity is at market highs.

These factors driving the rally could also amplify downside risk when expectations change.

In terms of volatility levels, the Cboe Semiconductor ETF Volatility Index is about twice that of the Russell 2000 and Nasdaq 100 indexes, and more than three times that of the S&P 500, indicating that the sector's risk is significantly higher than the broader market.

Kramer said that although the S&P 500 is near all-time highs and the market appears calm on the surface, concentration and structural risks are rising, and investors should not judge market conditions based solely on index performance.