US STOCKS-Wall Street ends down as AI worries slam tech stocks
US STOCKS-Wall Street ends down as AI worries slam tech stocksAdvanced Micro Devices tumbles on revenue forecastEli Lilly gains on forecasting 2026 profit above estimatesAlphabet falls ahead of quarterly reportUpdates with close of sessionBy Noel Randewich and Pranav Kashyap. Feb 4 - U.S. stocks ended lower on Wednesday, with losses in Advanced Micro Devices, Palantir and other technology companies, as investors worried about pricey valuations and whether Wall Street's AI rally has reached its peak.Alphabet GOOGL.O fell ahead of its quarterly results after the bell, which will give investors a fresh glimpse of how much the Google-owner's massive investments in AI are contributing to its top-line sales growth.Advanced Micro Devices AMD.O tumbled after the chipmaker forecast quarterly revenue that disappointed investors and suggested it is having a tough time competing against AI heavyweight Nvidia NVDA.O.Limiting losses in the S&P 500, shares of the drugmaker Eli Lilly LLY.N rallied af