Options Brief - Twin Shock, Tech Tumbles - 24 July 2026

Author: Koen Hoorelbeke, Investment and Options Strategist

Summary

On July 24, 2026, the S&P 500 experienced a significant drop of 1.21%, marking its worst session in a month. This decline was driven by two major shocks: doubts regarding the return on AI investments by major tech companies and Brent crude oil prices surpassing $100 for the first time since May. The VIX, a measure of market volatility, rose by 12.4% to 18.70, indicating increased market anxiety.

Key Findings

• Correlation Increase: Implied correlation among S&P 500 stocks surged by 22.8% to 9.26, indicating that stocks moved together rather than independently.
• Volatility Spike: The VIX and its short-term measures (VIX1D and VIX9D) saw significant increases, suggesting that traders are anticipating more volatility in the near term.
• Broad Market Stress: The simultaneous rise in oil volatility and Treasury volatility, alongside equity volatility, indicated a widespread market reaction to the shocks.

Market Snapshot

On July 23, 2026, the major indices closed as follows:

• S&P 500: 7,408.30, down 1.21%
• Nasdaq 100: 28,454.81, down 1.87%
• Dow Jones: 51,717.16, down 0.97%

Notably, major tech stocks fell sharply, with Tesla down 14.52% following a profit miss and increased AI spending guidance.

Market Drivers

The twin shocks that reset market sentiment included:

• Concerns over the profitability of AI investments, highlighted by Alphabet's increased capital expenditure guidance.
• Brent crude oil prices rising above $100, exacerbated by geopolitical tensions in the US-Iran conflict.

Options Flow Sentiment

Options trading showed a defensive posture, particularly in the semiconductor sector, with increased buying of out-of-the-money puts. This suggests that traders are hedging against further declines in the market.

Conclusion

The market's reaction on July 24 was significant not just for the magnitude of the drop but for the underlying drivers. The increase in correlation among stocks indicates a shift from individual stock narratives to a broader macroeconomic focus. As the market heads into a week filled with major events, including the FOMC meeting and earnings reports from key tech companies, traders should remain vigilant about potential volatility and market movements.