收评：沪指震荡小幅上涨0.27% 黄金、石油等资源周期股集体大涨

Market Overview - A-shares showed mixed performance on January 28, with the Shanghai Composite Index and Shenzhen Component Index slightly up, while the ChiNext Index experienced a small decline. The Shanghai Composite Index closed at 4151.24 points, up 0.27%, with a trading volume of 13,655 billion yuan [1] - Resource stocks led the market, particularly gold stocks, with Sichuan Gold achieving four consecutive trading limits, and China National Offshore Oil Corporation rising over 6% to a new high [1] - The total trading volume in the Shanghai and Shenzhen markets reached 29.7 trillion yuan, an increase of 70.4 billion yuan compared to the previous trading day [1] Sector Performance - Key sectors that performed well included precious metals, oil and gas extraction, steel, combustible ice, rare earth permanent magnets, and coal [2] - Conversely, sectors that saw declines included photovoltaic equipment, medical services, education, recombinant proteins, avian influenza, and Sora [2] Institutional Insights - According to Jifeng Investment Advisors, the A-share market is expected to continue a volatile consolidation pattern in February, with support from policies and valuations, while facing pressure from profit verification. They recommend focusing on cyclical sectors, technology growth, and defensive assets [3] - CITIC Construction highlighted the booming commercial aerospace industry, particularly the advancements in reusable rocket technology, which are expected to drive significant growth in the satellite communication market, projected to grow from $25.2 billion in 2025 to $83 billion by 2035, with a compound annual growth rate of approximately 13% [3] Company Updates - Amazon Web Services (AWS) announced a price increase of approximately 15% for its EC2 machine learning capacity blocks, marking the first price hike in about twenty years. This adjustment reflects the high demand for AI computing resources and the increasing scarcity of supply [4] - Haizhou Intelligent, a subsidiary of Suzhou Keda, announced a price adjustment for certain products, with increases ranging from 10% to 30%, effective March 1, 2026. This adjustment affects a range of products including storage series, front-end cameras, and servers [8]