The number of ‘negative-beta’ stocks in the S&P 500 just hit a new record high. What that means for investors.

“Stocks in the S&P 500 are increasingly moving in opposite directions on the same trading day, creating higher intra‑day volatility than the index’s overall performance suggests. This rise in “negative‑beta” stocks—those that tend to move counter to the market—has set a new record, signaling that diversification benefits within the index may be eroding. Investors may need to reassess risk models that assume a relatively uniform market move. Expert Analysis: The surge in negative‑beta stocks indicates that sector‑specific shocks and divergent earnings narratives are outweighing broad market momentum. As a result, traditional beta‑based allocation strategies could underperform, prompting portfolio managers to incorporate more granular factor analysis and hedging techniques.”