On Monday (21 September) there was a general fall in the three major United States equity indices, a fall in the NASDAQ composite index, a continued upturn of 5.2 per cent in the annual United States Treasury debt, and the risk-averse sentiment of a warmer Middle East situation combined with rising borrowing costs to pressure risk assets. Semiconductor plate pressure, with double-digit percentage drops in the British and ultra-micro shares, was stabilized. At the same time, Brent's crude oil futures were again approaching $91 per barrel, with partial reports of $106 per barrel on a site where energy supply concerns intersected with inflation expectations, further exacerbating the push over high-value technology units. The NASDAQ-100 index had previously entered the technical retreat zone, the global chip and memory stock had weakened, the benchmark indices of Taiwan and Japan recorded a decline of about 6.5 per cent and 4 per cent, respectively, and the Korean stock market was unable to synchronize because of holidays. Markets are sceptical about the sustainability of artificial intelligence spending to sustain high industry valuations, with declining equity prices in parts of British Weeda, ultra-micro, applied materials, and Konning, and downward pressure on Mavell and Hewlett-Packard enterprises. The fragmentation of the cyber-security blocks and the support of the Claude Strake and Palo Alto networks in connection with the coverage of security incidents by the financial tech firm Ravirut show that funds are rotating from mere growth narratives to defence and security assets.
After the opening of the market that day, the NASDAQ composite index once fell by almost 2 per cent, and then fell by about 0.7 per cent, near 26,142 points; the S&P 500 index fell by about 0.5 per cent, reporting 7,620 points; and the Dow Jones industry average fell by only about 0.2 per cent, reporting 52,471 points. Another snapshot shows a drop of 0.87 per cent in NASDAQ 26,834.34 points, 7,684.53 points in Standard & Poor ' s 500 reports, 0.76 per cent, 51,470.47 points in Dow Jones, 0.69 per cent. The NASDAQ-100 index, which had previously slipped into the back-to-back zone, was reported in part to have receded the following day in fear of the conflict in the Middle East as a result of the rise in the rate of return on United States debt, following a record harvest on the previous trading day. The Science and Technology Unit and the Communications Unit were the main force of the decline, with the PHLX index having fallen by 5 per cent at individual points. Inverted by some 3 per cent in part, the company previously announced the authorization of an additional $150 billion in repurchases, bringing the cumulative repurchases to $235 billion, with a value of approximately $5.61 trillion, at a value of approximately $231.74. Super-micro-equity prices fell by about 4.7 per cent, in Weida, by about 3.2 per cent, and in Mavell and Hewlett-Packard enterprises. Netflix stock prices fell by about 11 per cent, as the newsstream company warned that growth would slow in the third quarter. The Scholastic stock price fell by about 7 per cent, owing to poor performance. Some reports mention that Tesla fell by about 15 per cent, becoming one of the leaders of the fall of the technology unit at that time, but that the business was market fluctuations at different points in time and had to be distinguished by specific dates.
Increased borrowing costs are one of the core variables of the fall of the current round. 10 The annual US Treasury debt rate went further on Monday, breaking 5.2 per cent, with reports that the US debt rate has continued to rise to more than 5 per cent, pushing up corporate and individual financing costs and placing pressure on high-growth shares that depend on future cash flow valuation. Energy prices were rising simultaneously, Brent crude oil futures were approaching $91 per barrel at one time, and there was data in the disk that Brent crude oil remained above $106 per barrel, and the market was concerned that the stagnation of diplomatic progress in the Strait of Hormuz would continue to pose a supply risk. The rise in crude oil coincided with an upward trend in the return on US debt, and the combination of market concerns about inflation and borrowing costs prompted investors to withdraw from some AI and semiconductors. At the same time, some reports point to a period of decline in crude oil for the fifth consecutive day, negotiations between Iran and the Trump-Xenping talks expected to cool down, and to the fact that NASDAQ had reached a record draw in the context of a decline in oil prices and the rise in AI's bets, but that the direction of energy and yield in this round has reversed and is an important backdrop for the fall in the index.
The volatility of this semiconductor-AI-related stocks, in addition to macro-level factors, has added security and expenditure sustainability concerns within the industry. The CEO of Anthropic International, Dario Amoudi, published an article about 3,800 words advocating that artificial intelligence companies should slow down the iterative pace of models in order to address the security concerns of emerging; the related statements of the CEO of OpenAI, such as Sam Ortman, were seen as triggers for emotional change on weekends. Young Weida and ultra-micro had a double-digit percentage decline in front of the drive, which then stabilized at a lower level during the conventional trading period. The news that the new model published by Moonshot AI, China’s dark side, claims that performance can be compared to the top-class US system, further exacerbates the market’s anxiety about the sustainability of America’s high valuation of technology companies. At the same time, the United Kingdom announced an additional $150 billion in buy-back authorization and a cumulative $235 billion operation, which served to support the Unit for part of the time and allowed it to demonstrate some independence in the process of NASDAQ's fall. The half-conductor supply chain was under overall pressure, and Intel, apps, Conning, Super-micro-collar falls, and Mavell and Hewlett-Packard enterprises were under downward pressure. The relative robustness of the Cyber Security Unit reflects the rotation of funds from pure growth narratives to defence and security assets.
For holders of semiconductors and AI plates, fluctuations in the current round mean an increase in the short-term volatility of the high valuation lead stock, and an increase in the size of the buy-back, while supporting a single share to some extent, cannot fully offset the combined impact of the upturn in yields and industry sentiment. Investors holding NASDAQ components, particularly chips, memory and AI-related shares, need to focus on the continuing direction of the United States debt yield and the impact of the situation in the Middle East on energy supply, as both are directly related to valuation discounts and risk preferences. Market participants with energy-related assets or with interest in Brent crude oil prices need to be mindful of the evolution of diplomatic progress and supply risks in the Strait of Hormuz, as fluctuations in crude oil prices can be channelled to the broader stock market through inflation expectations and borrowing costs. For observers who are interested in America’s big-discretion index, Dow Jones’s rivalry and the split of NASDAQ’s fall suggest that the market is redistinguishing defensive and growth-oriented assets, and that simply relying on AI’s narrative of growth, the silo faces a greater emotional and valuation test. The additional buy-back authorization provided some sign of support for shareholders interested in buy-back and cash allocation policies, but the market remained sceptical about the sustainability of the valuation of the overall technology block. For cross-border market participants, the fall in the benchmark index between Taiwan and Japan, the closure of the Korean stock market on holidays and the possible ripple effect of the follow-up, indicate that the inter-regional relevance of science and technology and memory shares has increased significantly in the current round.
Next, market participants need to follow up on the evolution of the 10-year United States Treasury debt return and the evolution of Brent crude oil prices, both of which are directly related to borrowing costs, inflation expectations and risk asset valuation. If the rate of return on the United States debt remained at more than 5.2 per cent, the high-growth technology and semiconductor units, which would have relied on forward cash flows, might continue to face valuation pressures; and if crude oil prices were to rise further in response to the situation in the Middle East, inflation and supply concerns might continue to exacerbate the push over the broader index. For observers of semiconductor and AI plates, it is important to note the follow-up statements by industry leaders on the rhythm and safety of model development, and whether the performance comparison of China ' s AI model continues to influence the market ' s judgement of USSTECH ' s valuation. For investors holding a share, the scale and pace of buy-backs in Inverda are important observations, but buy-backs in themselves are not a substitute for matching fundamentals with valuations; Netflix, the warning of a slowdown in growth in the third quarter and Scholastic performance are also a reminder to the market that the modification of profit expectations remains an important source of stock volatility. For participants interested in global connectivity, the movement of chips and memory shares and holiday trading arrangements in areas such as Taiwan, Japan and the Republic of Korea may affect subsequent emotional transmission, which needs to be judged in the context of local transaction calendars and index performance. In general, the core of the current round ' s fluctuations is the convergence of yield gains, energy supply concerns and AI security and expenditure sustainability concerns, and the subsequent performance will depend on a steady return on US debt, a moderate energy supply risk, and an intra-industry consensus on the pace of AI development and security issues.