Top Stock Movers – May 7, 2026
U.S. stocks closed lower Thursday after early gains pushed the S&P 500 and Nasdaq Composite to fresh intraday record highs before investors pulled back amid renewed strength in oil prices and a wave of sharp post-earnings stock moves.The Dow Jones Industrial Average fell 0.6%, while the S&P 500 lost 0.4% and the Nasdaq Composite edged down 0.1%. The retreat followed Wednesday’s powerful rally, when the Dow surged more than 600 points.
Oil markets reversed earlier declines as traders weighed the possibility of a U.S.-Iran agreement against lingering supply concerns. West Texas Intermediate crude settled near $95.90 per barrel, while Brent crude climbed back above $100.
Top Stock Winners
Datadog Surges 30% on Strong AI-Fueled Outlook
Shares of DDOG soared 30% after the cloud monitoring and cybersecurity company posted stronger-than-expected quarterly results and raised guidance.
Revenue jumped 32% year over year to $1.01 billion, beating Wall Street expectations, while management cited accelerating demand for AI-enabled cloud infrastructure tools.
Fortinet Jumps 19% After Earnings Beat
Cybersecurity firm FTNT rallied 19% following better-than-expected earnings and upbeat forecasts tied to enterprise security spending and AI infrastructure demand.
Top Stock Losers
Planet Fitness Crashes 31% on Weak Membership Growth
PLNT plunged 31% after the gym operator sharply lowered its full-year outlook, citing weaker-than-expected member signups during its peak enrollment season.
Despite topping quarterly earnings estimates, investors focused on slowing subscriber momentum and softer revenue expectations.
Shake Shack Slides 28% After Disappointing Results
Burger chain SHAK tumbled 28% after reporting weaker-than-expected revenue and issuing cautious full-year guidance.
The company posted an unexpected operating loss as consumer spending pressures weighed on restaurant traffic.
Zoetis Drops 21% After Cutting Guidance
Animal healthcare company ZTS sank 21% after lowering its full-year forecast and warning about softer veterinary visits and increased competition in pet-care products.
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