Summary of U.S. Stock Investment News for February 28, 2026

Part 1: Top 10 Most Important and Hottest News Summaries (Focusing on hot stock announcements, earnings highlights, and major events)

1. Wholesale Inflation Data Exceeds Expectations: PPI rose 0.5% month-over-month and 2.9% year-over-year, higher than market expectations, raising concerns about the Fed's interest rate cut path and increasing corporate cost pressures.
2. AI Concerns Intensify, Tech Stocks Under Pressure: Nvidia continued its decline, falling over 4%. OpenAI's massive $110 billion funding round raised doubts about the sustainability of AI capital expenditures, sparking market fears of an AI bubble.
3. Block (formerly Square) Major Layoffs: The company announced significant job cuts, emphasizing that AI efficiency improvements led to reduced positions. However, its stock price soared against the trend by nearly 17%-23%, highlighting AI's impact on employment.
4. Financial Sector Plummets: Bank stocks plunged, with the KBW Bank Index down nearly 5%. Goldman Sachs fell over 7% and American Express fell nearly 8%, affected by spillover from private credit panic triggered by the collapse of UK mortgage lender MFS.
5. CoreWeave's Performance Guidance Falls Short of Expectations: Shares of AI data center company CoreWeave plummeted over 10%-18% due to investor concerns over its massive $3.25 billion capital expenditure.
6. Dell AI Server Demand Strong: Dell's stock surged over 13%-21% after-hours, driven by booming AI server orders, performance guidance far exceeding expectations, and the announcement of a large-scale share repurchase.
7. Paramount Wins Warner Bros. Bidding: Paramount defeated Netflix and others to acquire Warner Bros. Studios and its streaming business. Netflix's stock rose after it withdrew its bid.
8. Airlines Stocks Plunge Across the Board: United Airlines, Delta Air Lines, etc., fell over 6%-8%, impacted by rising oil prices and market panic.
9. Energy Stocks Rise: Against the backdrop of rising oil prices, ExxonMobil, Chevron, etc., rose over 1%-3%, as geopolitical risks boosted expectations for crude oil demand.
10. Chinese ADRs Diverge: Baidu's AI business surged, lifting its stock price; others like Cango and 21Vianet saw significant declines.

Part 2: Indicators and Related Data for Over Ten Major International Market and Economic Dynamics Today's and recent key indicators (based on the latest available data):

1. Dow Jones Industrial Average: 48,977.92, down 521.28 points (-1.05%).
2. S&P 500 Index: 6,878.88, down 29.98 points (-0.43%).
3. Nasdaq Composite Index: 22,668.21, down 210.17 points (-0.92%).
4. February PPI Inflation: Month-over-month +0.5% (expected +0.3%), year-over-year +2.9%.
5. 2025 Q4 GDP Growth Rate (preliminary): Annualized +1.4% (previous +4.4%).
6. Unemployment Rate: 4.3% (previous 4.4%).
7. Nonfarm Payrolls: +130,000 (previous +48,000).
8. Core Inflation Rate (PCE-related): Recently around 2.4%-2.7%.
9. Personal Income: December +0.3%.
10. Personal Consumption Expenditures: December +0.4%.
11. Personal Savings Rate: December 3.6%.
12. Philadelphia Semiconductor Index: Led the decline, with semiconductor stocks collectively falling.
13. KBW Bank Index: Down 4.85%, marking its largest single-day drop since last April.

Part 3: Summary of Reports and Views from Renowned Investment Banks

• Morgan Stanley: Bullish on the continuation of the bull market in its 2026 stock market outlook, expecting the S&P 500 to reach 7800 by year-end with 17% EPS growth. It is optimistic about bank stocks benefiting from deregulation and M&A recovery. The AI bull market is entering "Act II," with broader diffusion.
• Goldman Sachs: Its 2026 global equity outlook emphasizes a shift from tech dominance to a broader bull market. It is cautious on AI stocks, favors asset-intensive companies (resistant to AI disruption), and warns that private credit default risks could rise to 15%.
• UBS: Downgraded its rating on U.S. stocks, citing market risk concerns.
• Other Views: Several investment banks believe AI disruption risks are spreading to financial stability, increasing short-term volatility, but remain optimistic about long-term support from AI capital expenditures and corporate buybacks.

Part 4: Short-term and Long-term Investment Recommendations Based on today's market: Stubborn inflation, AI concerns, geopolitical risks, and financial pressure have led to a cautious short-term market sentiment.

• Short-term Recommendations (Today/Near-term): Avoid chasing high-tech/AI-related stocks (e.g., Nvidia, CoreWeave). Consider reducing holdings in financial stocks (Goldman Sachs, American Express, etc.). Focus on strong performers against the trend, such as Dell (strong AI server demand) and Block (AI efficiency theme). Energy stocks benefit short-term from rising oil prices and can be watched with small positions. Overall, it's advisable to wait and see or buy on dips for defensive assets today, avoiding aggressive trading.
• Long-term Recommendations: Bullish on the continuation of the bull market in 2026 (multiple investment banks have higher S&P 500 targets). Focus on allocating to beneficiaries of AI infrastructure (e.g., Dell and other hardware), bank stocks benefiting from deregulation, and asset-intensive companies resistant to AI disruption. Record corporate buyback scale provides support. If inflation gradually eases, the Fed still has policy room. Recommend diversified allocation, monitoring macroeconomic data and geopolitical dynamics, and holding a long-term portfolio of quality growth and value stocks.