A-share Pre-market Report | U.S. stocks in optical communication and storage collectively plummet! Yushu Technology (688836.SH) debuts on the STAR Market today.

Pre-Market News 1. AI stocks face collective plunges with significant drops in the optical communications and storage sectors. Type: Industry Sentiment Impact: Negative Influenced by the latest turmoil in the Middle East conflict and the "U.S. debt storm," the three major U.S. stock indices fell collectively, leading to heavy selling of AI stocks. The storage sector saw SK Hynix drop by 9.2% and SanDisk by 9.01%; in the optical communications sector, Coherent fell by 12.75% and Lumentum by 9.87%; Intel decreased by 6.58% and Marvell Technology dropped by 7.82%. 2. Siasun Robot & Automation welcomes multiple catalysts! Yush Technology lists today, could net 350,000 from one subscription? Type: Industry Sentiment Impact: Positive Humanoid Siasun Robot & Automation is encountering multiple catalysts, as Yush Technology officially lists on the STAR Market today. If we calculate based on this year's STAR Market new stocks' average first-day closing increase of 463.24%, one subscription could yield a paper profit of 349,300. Additionally, the 2026 World Siasun Robot & Automation Conference will open in Beijing on August 19, featuring four major theme days for the first time, along with the establishment of a collaborative innovation consortium by state-owned enterprises in the Siasun Robot & Automation sector. 3. Breaking News! Housing provident funds can now invest in policy-related financial bonds, activating 10.9 trillion "dormant funds." Type: Industry Sentiment Impact: Positive With 10.9 trillion yuan in housing provident funds, the system is undergoing its largest revision in nearly 20 years. This includes adjustments in extraction and usage scope, enhanced management service efficiency, expanded coverage, and strengthened risk prevention measures. Caitong indicates that if provident fund interest rates decline, the real estate sector could witness at least an index-level rally. Whether this evolves into a pivotal shift depends on the stabilization process in core cities. 4. U.S. Officials: Trump requests negotiation team to pause contacts with Iran. Type: Macro Sentiment Impact: Negative U.S. officials report that Trump has instructed his negotiation team to temporarily refrain from contact with Iran. This team includes U.S. Vice President Pence, Trump's envoy Hook, and Trump's son-in-law Kushner. Additionally, a source indicates that White House officials have recently communicated to political allies that the U.S. strategy towards Iran is shifting from striking Iran swiftly to a long-term goal of strangling Iran's throat. 5. Shanghai Stock Exchange intervenes, halting trading for some accounts! Involves the 12 surge stock Elegant Home-Tech. Type: Company Sentiment Impact: Negative On the evening of August 18, Elegant Home-Tech, which has seen its stock price hit the daily trading limit for 12 of the last 13 trading days, issued a risk warning. The company has accumulated significant trading risk, and if the stock price continues to rise abnormally, it will apply for a trading suspension to conduct investigations. Moreover, the Shanghai Stock Exchange has implemented self-regulatory measures, including the suspension of trading for related investors. Investment Calendar World Siasun Robot & Automation Conference Investment Insights People tend to look for simple reasons to justify their decisions, often basing their choices on whether these reasons exist. Aswath Damodaran, "Investment Philosophy" Institutional Perspectives 1. GF SEC: After a rotational rebound in various sectors, focus on mid-year reports and annual fundamental validations, as well as future economic outlooks. 2. Industrial: Hard technology remains the core of recovery, while more signs of economic prosperity beyond AI are gradually recognized and believed by the market. 3. Founder: The market is expected to continue fluctuating until trading volumes consistently increase, with opportunities sought in sectors with higher prosperity. Prospective Good and Bad News 1. Super El Nio is coming - What impact will it have on agricultural stocks? Type: Institutional Hot Commentary Kangyuan Securities: Historically during four strong El Nio periods, commodity prices have performed diversely. Planting and seed industries are directly impacted by weather disruptions, while livestock may benefit from improved feed costs in the short term. Planting enterprises face reduced output and quality risks due to extreme weather; the seed industry is expected to benefit from increased demand for resilient varieties in the medium to long term. 2. Windows 10 service cessation coinciding with countdown of State-owned Assets Supervision and Administration Commission Document No. 79 - A year of booming domestic operating system orders has arrived. Type: Market Discussion Cinda: The space for the government's, public institutions, and central state-owned enterprises IT innovation market is approximately 632.5 billion yuan. GF SEC's report on IT innovation states that reviewing the historical stages of IT innovation indicates that the PC and server markets exceed one trillion yuan. 3. Are power semiconductors about to increase prices again? Some companies may start price hikes in October. Type: Market Discussion Guosen: According to forecasts, the global power electronics market is expected to grow at a CAGR of 7.1% from 2025 to 2031, reaching $41.3 billion, with AI infrastructure/data centers as the main growth driver. The establishment of domestic super nodes is also likely to drive demand for supporting power devices, as demand in other markets for power devices is on the rise. Announcements Quick Dispatch Mostly Positive Announcements 1. Tianshan Aluminum Group: Net profit in the first half of 2026 reached 4.177 billion yuan, a year-on-year increase of 100.44%. 2. Puya Semiconductor (Shanghai) Co., Ltd.: Net profit in the first half reached 827 million yuan, a year-on-year increase of 1930%. 3. Suzhou TFC Optical Communication: Net profit in the first half increased by 34% year-on-year, with continued stable growth in demand for high-speed optical device products. Mostly Negative Announcements 1. Beijing Capital Development: Lawsuit filed due to contract disputes involving approximately 1.143 billion yuan. 2. Zhejiang Hisun Biomaterials: Wholly-owned subsidiary involved in construction contract disputes, with an amount in dispute of 67.6074 million yuan. 3. Shanghai Kelai Mechatronics Engineering: Controlling shareholder and one of the actual controllers, Chen Jiugang, plans to reduce holdings by no more than 3%. Overseas Markets Self-selected brother tips: The narrative of the "debt storm" has spread as the three major indices collectively close lower; storage, optical communications, AI cloud services, and other sectors experienced significant retreats, with SanDisk, SK Hynix, and Seagate Technology falling over 9%, and Micron Technology dropping over 7%. Coherent fell over 12%; the Nasdaq Golden Dragon China Index dropped over 1%, while Alibaba rose by 2.76%. This article is reprinted from "Tencent Self-Selected Stocks," edited by Jiang Yuanhua.