Bubble fears rise as tech stocks tumble, global markets retreat, and investors question AI valuations amid shifting sentiment.
Bubble Watch: Wall Street’s Volatile Week
Tech stocks led a sharp retreat across U.S. markets, with the Nasdaq Composite falling 2.1 % this week and futures signaling further pressure. The S&P 500 slipped 0.7 %, while the Dow Jones Industrial Average dropped 0.3 %, or 143 points. Nvidia fell 2.5 %, Broadcom 2.1 %, and Caterpillar 2.5 %, weighing heavily on the Dow. Despite this, the Nasdaq remains 50 % higher since April’s lows, highlighting how elevated valuations remain at risk from even minor sentiment shifts.
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Corporate Earnings and U.S. Market Signals
Mixed earnings shaped the trading week. Block Inc. tumbled 10.9 % after weaker-than-expected results, while Expedia Group surged 17.5 % following a strong quarter. Treasury yields stayed stable, with the 10-year note at 4.10 % and the 2-year at 3.56 %. Analysts note that rising layoff data and a government shutdown delaying U.S. jobs figures could fuel speculation about upcoming Federal Reserve rate cuts.
Bubble Watch: Asian Equity Decline
In Asia, the Nikkei 225 and Kospi each fell more than 1 %, following U.S. tech weakness. SoftBank Group lost nearly 20 % in a week — its steepest drop since 2020 — as investors reassessed AI-related bets. China’s October exports declined 1.1 % year-on-year, with shipments to the United States plunging 25 %. The trade truce between Beijing and Washington is expected to stabilize exports over the coming quarter.
European Market and Trade Data
European shares also moved lower. Germany’s upcoming trade data are expected to confirm stagnation in exports, while the U.K.’s recent PMI reading hovered near the 50-point expansion line. Analysts note that high-tech valuations and rising bond yields across the Eurozone continue to restrain risk appetite.
Bubble Watch: Investor Sentiment and AI Valuations
A Bank of America survey found more than half of fund managers now believe global equities are in an AI bubble. HSBC strategist Herald van der Linde compared current conditions to the late-1990s dot-com era, warning that “when valuations hit blue-sky levels, even a small cloud can shift sentiment dramatically.”
Commodities and Safe-Haven Flow
Oil prices steadied as OPEC+ maintained planned output increases into December. Gold rose to $3,986 per ounce amid demand for safe assets, while the yen and Swiss franc strengthened modestly. Market participants now focus on how equities finish the week after one of the sharpest drawdowns since early-year tariff turbulence.
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