economy
Stock market calm hides the churn underneath
The AI trade explains why the S&P 500 barely budges even as companies within it swing like mad.

TL;DR
- Individual stock volatility in the S&P 500 spiked in July, reaching levels not seen since previous market panics, while the index itself remained relatively stable.
- This divergence between individual stock moves and index-level volatility is attributed to the AI boom, which is shifting market focus from broad economic developments to a company's perceived success or failure in AI.
- A 'dispersion trade' involving betting against index swings while betting on individual stock choppiness has been a strategy employed by hedge funds, though recent events have led to an unwind of these trades.
- Analysts believe that AI will continue to be the primary driver of the markets, suggesting that sharper swings in individual stocks relative to the index are likely to persist.