HomeNewsBusinessMarketsTraders search for clues behind biggest S&P reversal since April

Traders search for clues behind biggest S&P reversal since April

The S&P 500 has now declined more than 5% from its October record and has fallen below its 100-day moving average for the first time since February.

November 21, 2025 / 03:46 IST
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 The VIX Index, an options-based measure of expected volatility in stocks, closed above 26 for the first time since April.
The VIX Index, an options-based measure of expected volatility in stocks, closed above 26 for the first time since April.

The most dramatic intraday reversal in the US stock market since April dragged benchmark indexes to their lowest levels in more than two months — all while leaving bewildered Wall Street traders scratching their heads about what exactly caused it all.

While there was no obvious catalyst to blame for a plunge of almost 5% in the Nasdaq-100 Index from its high of the day, theories for the selloff were piling up.

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Some traders pointed to resurfacing concern around whether artificial-intelligence projects are generating enough revenue or profits to justify the massive spending on the technology. To others, a strong delayed jobs report for September was the latest sign that the Federal Reserve is done cutting interest rates this year. Others said a risk-off signal sent by the drop in Bitcoin to a six-month low was partly to blame for the rout in equities. Worries about lofty stock valuations and an uptick in volatility heading into Friday’s options expiration were also cited.

Whatever the reason, the intraday slide wiped out an early feeling of optimism that US equities would continue a rebound from a selloff that followed the market’s last record highs near the end of October. What at first appeared to be a blowout earnings report from Nvidia Corp., the chipmaker at the epicenter of the AI race, and a quarterly update from Walmart Inc. that showed consumers are still spending were quickly overshadowed by a sudden, relentless bout of selling.