S&P 500 Falls 1.2% Yet Gainers Outnumber Losers by 173, a Rare Signal Last Seen in 1999

The S&P 500 dropped about 1.2% Thursday even as advancing stocks outnumbered decliners by 173, a divergence Citi says has occurred only twice since 1999. The bank cautioned that the pullback does not yet constitute a buying opportunity. Citi U.S. equity trading strategy head Stuart Kaiser said the selloff was driven by large-cap technology losses, with capital rotating into commercial services, regional banks and transports — lower-weight sectors that left most constituents higher while the market-cap-weighted index fell. He said investors are exiting growth, earnings-revision and price-momentum themes, with the AI trade hardest hit. Kaiser attributed the selling to accumulated risks rather than a single event, citing doubts over Meta's (META) AI strategy, rising French bond yields and higher oil prices. The prior instance, on January 27, 2025, saw the index rebound 0.9% the next day before falling in three of the following five sessions. Citi still favors large-cap and growth stocks with strong balance sheets, but Kaiser said adding equity exposure now remains risky. He pointed to Invesco QQQ Trust (QQQ) for hedging positioning risk and iShares Russell 2000 ETF (IWM) for credit, rate and policy concerns.