2026 年，美股 AI 泡沫会破裂吗？20251117 美股 AI 泡沫叙事持续至 2026 年，或引发市场风险。历史经验表明，货 币政策收紧是刺破泡沫的关键因素，估值虽能显示顶点，但政策变化加 速破裂。 当前美股科技状况处于狂热初期，类似 1998 年科网泡沫时期。标普 100 估值已达历史高位，但 IPO 活动和资本支出相对低迷，表明泡沫尚 未完全膨胀。 2026 年美股 AI 泡沫破裂风险主要来自宏观和政治周期。美联储降息政 策可能导致经济过热，引发通胀和加息预期，或小幅降息后停止，效果 类似变相加息。 市场对美联储 12 月降息预期存在分歧，从 10 月底的 98%降至 40%左 右，反映出美联储官员的鹰派立场和对进一步宽松的谨慎态度。 短期内，AI 相关科技股表现波动，但长期来看，英伟达等公司财报和消 费股业绩将提供更多信号，高频数据显示美国消费韧性强劲，政府重新 开门释放流动性也有助于缓解市场压力。 Q&A 2026 年美股 AI 泡沫的基本情况如何？ 我们认为，2026 年美股 AI 泡沫是一个非常重要的话题。从宏观角度来看，无 论是美国还是中国，都将 AI 科技视为经济发展的重要历程。然而， ...

Core Insights - The US services sector activity returned to expansion in October, with the ISM services PMI recorded at 52.4%, up from 50% in September, marking the eighth consecutive month above the threshold [1] - The business activity index rose significantly to 54.3%, a 4.4 percentage point increase from September's 49.9%, indicating a return to expansion [1] - The new orders index surged to 56.2%, a rise of 5.8 percentage points, reflecting improved demand in the services sector [1] Industry Performance - Eleven industries experienced growth in October, including accommodation and food services, retail, wholesale, real estate, healthcare, and transportation and warehousing [2] - Six industries faced contraction, including arts and entertainment, management services, finance and insurance, public administration, and construction [2] Employment and Inventory Trends - The employment index remained in contraction at 48.2%, indicating weak hiring intentions despite a slight improvement from September [1] - The inventory index recorded at 49.5%, still in contraction, as businesses generally reduced inventory levels to manage demand and cost uncertainties [2] Price and Supply Chain Dynamics - The prices index rose to 70%, the highest level since October 2022, indicating persistent inflationary pressures in the services sector, driven by tariffs affecting material and service costs [1] - The supplier deliveries index stood at 50.8%, indicating a continued slowdown in delivery speeds, which is typically associated with improved demand or supply chain constraints [1] Order Backlog and Economic Signals - The backlog of orders index dropped significantly to 40.8%, the second-lowest level since 2009, suggesting that businesses can manage current orders without significant delivery delays [2] - Feedback from industries indicated mixed economic signals, with some sectors experiencing seasonal demand improvements while others faced challenges from import restrictions and rising prices [2]

分组1 - The Federal Reserve is expected to stop quantitative tightening in a matter of months to maintain liquidity in money markets [2][3] - There is uncertainty regarding the number of rate cuts, with discussions leaning towards two quarter-point hikes this year and more potential changes next year depending on personnel [4][3] - Recent bankruptcies in the auto sector raise concerns about systemic risks, although the current economic expansion has not shown significant deterioration in balance sheets [5][7][8] 分组2 - The current economic environment is characterized by a long stretch of risk-taking by investors, which could lead to mistakes during hot market conditions [6][7] - The expansion phase is not expected to end simply due to age, and the economy is described as being more resilient than in previous cycles [10][8] - The macro economy is likely to absorb sector-specific shocks, such as those from government shutdowns, due to the larger size of the private sector [14][15]

Group 1: Report Industry Investment Rating - No relevant content provided Group 2: Report's Core View - In September, due to the traditional peak season, corporate production and business activities accelerated. The manufacturing PMI, non - manufacturing business activity index, and composite PMI output index were 49.8%, 50%, and 50.6% respectively, showing an overall recovery and indicating that China's economic output remained in an expansion phase. However, there were still weaknesses in investment, and consumption growth slowed down. Exports maintained resilience but might slow down in the future. Overall, demand improved, production accelerated, and prices showed different trends [2] - The demand side saw short - term acceleration in external demand and short - term recovery but still weak internal demand. In production, industrial production accelerated significantly in September and was expected to slow down but continue to grow at a relatively high rate in the fourth quarter. Prices of domestic and foreign demand - type commodities showed different trends [2] Group 3: Summary by Related Catalogs Manufacturing - In September, the manufacturing PMI was 49.8%, better than the expected 49.7% and up 0.4 percentage points from the previous month. The manufacturing market demand improved, with the new order index rising 0.2 percentage points to 49.7%. Production expanded faster, with the production index rising 1.1 percentage points to 51.9%. Both external and internal demand in foreign trade increased, with the new export order index and import index rising 0.6% and 0.1% respectively [3] - Manufacturing market prices dropped slightly. The main raw material purchase price index and the ex - factory price index decreased by 0.1 and 0.9 percentage points respectively. Industrial production accelerated, but investment demand in infrastructure and real estate was weak. Domestic "anti - involution" policies supported domestic - demand commodities, and international commodity prices rebounded [3][4] - Both the finished - product inventory and raw material inventory increased. The finished - product inventory index rose 1.4 percentage points to 48.2%, and the raw material inventory index rose 0.5 percentage points to 48.5%. Enterprises actively replenished raw material inventory and passively replenished finished - product inventory [4] Non - manufacturing - In September, the non - manufacturing business activity index was 50.0%, down 0.3 percentage points from the previous month. The service industry remained in the expansion range, with some industries in a high - level boom range and others falling below the critical point due to the end of the summer vacation effect. The construction industry's business activity index rose 0.2 percentage points to 49.3%, and its market expectation improved [5] Composite - In September, the composite PMI output index was 50.6%, up 0.1 percentage points from the previous month, indicating that the overall expansion of Chinese enterprises' production and business activities continued to accelerate [5]

Group 1 - The core viewpoint is that the Federal Reserve's shift towards interest rate cuts could extend the U.S. bull market, but future stock returns may be weaker than historical averages [1] - BMO Capital Markets' analysis shows that since 1982, in 8 out of 10 interest rate cut cycles, the S&P 500 index achieved positive returns, with an average increase of approximately 10.4% in the following year [1] - The performance of the stock market is contingent on whether interest rate cuts can prolong economic expansion and maintain corporate profit growth; if monetary easing fails to prevent economic recession, stock markets may suffer losses [1] Group 2 - BMO's analysis indicates that most sectors have risen in the year following the first interest rate cut since 1982, with communication services, consumer discretionary, industrials, and information technology typically performing well [2] - The energy sector has historically lagged, but sectors like energy, healthcare, materials, and utilities, which have underperformed prior to the current rate cut, may rebound stronger than average in the coming year [2] - BMO maintains a target price of 6700 for the S&P 500 index by the end of 2025, corresponding to an earnings per share of $275 and a price-to-earnings ratio of 24.4 [2]

Group 1 - The Purchasing Managers' Index (PMI) for manufacturing, non-manufacturing business activity index, and comprehensive PMI output index all showed recovery in August, indicating that the Chinese economy maintains overall expansion despite complex external conditions [1] - Manufacturing PMI slightly increased, with production index remaining in the expansion zone for four consecutive months, reflecting a continuous acceleration in manufacturing activities [1] - The service sector's business activity index rose to 50.5%, the highest level this year, indicating a significant recovery in service sector sentiment, driven by increased consumer activity during the summer [2] Group 2 - The high-tech manufacturing PMI and equipment manufacturing PMI were reported at 51.9% and 50.5% respectively, significantly above the overall level, showcasing the potential of new growth drivers in the economy [3] - The recovery in manufacturing and service sectors is supported by effective policy measures, including tax incentives and R&D expense deductions, creating a favorable environment for high-tech manufacturing [3] - The construction sector's business activity index declined, reflecting both seasonal factors and the slow recovery in related industries such as real estate [3] Group 3 - Macro policies need to focus on precision and continuity to sustain economic stability, with an emphasis on tax reductions and financing support for small and medium-sized enterprises [4] - The release of the "Opinions on Promoting High-Quality Urban Development" by the Central Committee of the Communist Party and the State Council aims to activate existing resources and support the real estate sector, promoting a positive interaction between urban development and economic transformation [4]

Economic Performance - The ICHI Composite Economic Index shows continued expansion, indicating a strengthening economic momentum in China[1] - The Consumer Confidence Index has significantly risen, returning to the expansion zone and reaching a new high in nearly a month[1] - Retail sales of consumer goods increased by 4.8% year-on-year in the first seven months of 2025, supported by consumption policies[2] Investment and Production - Manufacturing investment grew by 6.2%, with high-tech industries seeing investment growth rates exceeding 15%[2] - The Production Index has improved significantly, with capacity utilization rates rising, contributing to economic growth[1] - Exports increased by 7.3% year-on-year, showcasing resilience in external trade despite a global slowdown[2] Employment and Inflation - The urban survey unemployment rate in July remained stable at 5.2%, consistent with the previous year[2] - In the UK, July CPI rose by 3.8%, the fastest increase in 18 months, driven by higher prices in travel and fuel[6] - The US labor market shows signs of cooling, with initial jobless claims rising to 235,000, the highest since June[6]

Group 1: Manufacturing Sector - In July, the Manufacturing Purchasing Managers' Index (PMI) dropped to 49.3%, a decrease of 0.4 percentage points from the previous month, indicating a contraction in manufacturing activity [1] - The new orders index for manufacturing was at 49.4%, down 0.8 percentage points from last month, reflecting weakened market demand [1] - Despite the short-term slowdown, the production index remained at 50.5%, indicating expansion for three consecutive months [1] Group 2: Non-Manufacturing Sector - The Non-Manufacturing Business Activity Index was at 50.1%, down 0.4 percentage points from the previous month, but still above the critical point [4] - The construction sector experienced a slowdown, with the business activity index at 50.6%, a decrease of 2.2 percentage points [4] - Service sector activity remained stable, with the business activity index at 50%, a slight decline of 0.1 percentage points [4] Group 3: Price Trends - The main raw materials purchasing price index rose to 51.5%, an increase of 3.1 percentage points, marking the first rise above the critical point since March [2] - The ex-factory price index was at 48.3%, up 2.1 percentage points, indicating an overall improvement in manufacturing market prices [2] Group 4: Business Expectations - Manufacturing enterprises showed optimism for future market conditions, with the production and business activity expectation index at 52.6%, an increase of 0.6 percentage points from last month [3] - Non-manufacturing enterprises maintained a stable optimistic outlook, with the business activity expectation index at 55.8%, up 0.2 percentage points [4]

Economic Overview - The overall economic output in China continues to expand, despite fluctuations due to extreme weather conditions and a weak demand side [2][4]. Manufacturing Sector - In July, the Manufacturing Purchasing Managers' Index (PMI) dropped to 49.3%, a decrease of 0.4 percentage points from the previous month, indicating a contraction in manufacturing activity [2]. - The new orders index for manufacturing was at 49.4%, down 0.8 percentage points, while the production index remained at 50.5%, indicating continued expansion for three consecutive months [2]. - High-tech manufacturing and equipment manufacturing PMIs were 50.6% and 50.3%, respectively, both above the critical point, showing sustained growth in these sectors [2]. Price Trends - The purchasing price index for major raw materials rose to 51.5%, marking the first increase above the critical point since March, while the factory price index was at 48.3% [3]. - Industries such as petroleum, coal, and black metal processing saw significant improvements in their purchasing and factory price indices [3]. Business Activity in Non-Manufacturing Sector - The non-manufacturing business activity index was at 50.1%, down 0.4 percentage points, but still above the critical point [5]. - The construction sector experienced a slowdown, with its business activity index at 50.6%, a decrease of 2.2 percentage points [5]. - Service sector activity remained stable, with a business activity index of 50%, slightly down by 0.1 percentage points [5]. Future Outlook - Manufacturing enterprises maintain a positive outlook, with the production and business activity expectation index rising to 52.6%, an increase of 0.6 percentage points from the previous month [4]. - Non-manufacturing enterprises also show stable optimism, with a business activity expectation index of 55.8%, up 0.2 percentage points [5].

Economic Overview - In July, the manufacturing Purchasing Managers' Index (PMI) was reported at 49.3%, indicating a slight decline of 0.4 percentage points from June, reflecting a decrease in manufacturing activity due to seasonal factors and extreme weather conditions [2][3] - The non-manufacturing business activity index was at 50.1%, and the comprehensive PMI output index was at 50.2%, suggesting overall economic output remains in an expansion phase [1][4] Manufacturing Sector Insights - The production index and new orders index were recorded at 50.5% and 49.4%, respectively, both showing a decline from June, while the new export orders index fell to 47.1% [2] - Large enterprises had a PMI of 50.3%, with key sectors like equipment manufacturing and high-tech manufacturing maintaining PMIs of 50.3% and 50.6%, indicating ongoing expansion [2][3] Price Trends - The price index showed an upward trend, with the main raw material purchase price index at 51.5% and the factory price index at 48.3%, both increasing from June [3] - The rise in prices was attributed to the increase in prices of major commodities such as coal and steel, which significantly impacted the manufacturing PMI [3] Service Sector Performance - The non-manufacturing business activity index remained above 50%, indicating continued expansion despite a slight decline from June [4][5] - The service sector's business activity index was stable, with certain industries related to travel and consumption experiencing high activity levels, while construction activities slowed due to adverse weather [4][5] Future Outlook - Analysts suggest that macroeconomic policies should be adjusted to stimulate demand, particularly through increased government investment in public goods and infrastructure [4] - The upcoming summer consumption is expected to positively influence economic activity in August, supported by ongoing policies aimed at boosting domestic demand [5]