Wall St ends lower as bank CEOs warn of possible pullback, fueling tech bubble jitters

Market Overview - The S&P 500 and Nasdaq experienced their largest one-day percentage drop since October 10, with the S&P 500 falling 80.42 points (1.17%) to 6,771.55 and the Nasdaq dropping 486.09 points (2.04%) to 23,348.64 [1][4][5] - The Dow Jones Industrial Average decreased by 251.44 points (0.53%) to 47,085.24 [4][5] - Tech shares significantly impacted the Nasdaq, with six of the "Magnificent Seven" AI-related stocks declining [1][5] Sector Performance - The Philadelphia SE Semiconductor index fell by 4.0% [1] - The technology sector was the worst performer among the 11 major sectors in the S&P 500, declining by 2.3% [5] - Financials were the leading gainers during this trading session [5] Company-Specific Movements - Palantir Technologies saw an 8.0% drop despite a better-than-expected fourth-quarter revenue forecast, although its stock has increased by over 152% this year [5] - Uber's stock fell by 5.1% following a quarterly profit miss [5] - Henry Schein's stock rose by 10.8% after raising its annual profit forecast [5] - Spotify and Shopify's U.S.-listed shares decreased by 2.3% and 6.9%, respectively, after their quarterly results [5] Market Sentiment - Concerns over stretched valuations have led to profit-taking, as indicated by comments from investment analysts [1][5] - The U.S. government shutdown is nearing a record duration, resulting in a lack of official economic data and increased reliance on private sources for economic indicators [1][5] - The market is closely monitoring comments from Federal Reserve officials for insights into future monetary policy amid the absence of crucial economic data [1][5] Trading Volume and Market Breadth - Trading volume on U.S. exchanges was 19.82 billion shares, below the 21.04 billion average over the last 20 trading days [5] - On the NYSE, declining issues outnumbered advancers by a ratio of 2.45-to-1, with 68 new highs and 178 new lows [4][5] - On the Nasdaq, 1,134 stocks rose while 3,578 fell, resulting in a declining issues to advancers ratio of 3.16-to-1 [4][5] - The S&P 500 recorded 13 new 52-week highs and 19 new lows, while the Nasdaq Composite had 54 new highs and 260 new lows [5]