S&P 500 Implied Correlation Hits Record Low of 0.15

The S&P 500's 6-month implied correlation has fallen to 0.15, the lowest on record. This metric measures how closely stocks are expected to move together; a reading this low indicates individual stocks are becoming increasingly disconnected from the broader index.

The current level is less than half of the 0.35 reading seen just four months ago during the market selloff. By comparison, the long-term average stands at 0.43—nearly three times the current level—while the peak was 0.82 during the 2020 pandemic crash.

This historic divergence underscores a market increasingly driven by a handful of mega-cap stocks, with the rest trading more on their own fundamentals. Market concentration has rarely been this extreme.