21世纪经济报道·2025-09-30 04:00Market Overview - As of September 30, the Shanghai Composite Index rose by 0.40%, the Shenzhen Component Index increased by 0.31%, and the ChiNext Index saw a slight rise of 0.06%. The STAR Market 50 Index surged by 2% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 1.37 trillion yuan, an increase of 761 billion yuan compared to the previous trading day, with nearly 3,000 stocks rising [1] Storage Chip Sector - The storage chip sector experienced significant growth, with stocks like Jiangbolong rising by 20% and several others increasing by over 10% [2] - Major storage manufacturers, including SanDisk, Micron, Samsung, and Western Digital, have announced price increases since September, leading to a ripple effect in the downstream market [4] - Adata, a major storage module manufacturer, has stopped quoting DDR4 prices and prioritized the supply of DDR5 and NAND flash to key clients. Additionally, Phison has resumed some pricing with a price increase of approximately 10% [4] - The price surge is attributed to a restructuring of supply and demand in the storage industry, with significant inventory reduction and increased demand driven by AI investments from major companies [4] AI Sector - AI-related stocks saw a collective surge, with companies like Dahong Technology hitting the daily limit of 20% increase, and others like Kaipu Cloud and Tuolisi rising over 5% [5] - The launch of DeepSeek's new model, which significantly reduces service costs, has led to a 50% decrease in API costs for developers [6][7] - Domestic chip manufacturers have completed adaptations for DeepSeek's latest model, indicating a breakthrough in the domestic AI industry chain [7] Market Sentiment and Predictions - Optimistic sentiment prevails as multiple brokerages recommend holding stocks through the National Day holiday, with a 60% probability of the A-share market rising in the five trading days post-holiday [9][11] - Historical data shows that in 10 out of the last 15 years, the Shanghai Composite Index has risen in the five trading days following the National Day holiday [11] Gold Market - On September 30, spot gold prices reached a new high of $3,860 per ounce, marking a 0.72% increase [13] - Domestic gold jewelry prices have also risen, with brands like Chow Sang Sang and Luk Fook reporting prices of 1,125 yuan per gram, an increase of 14-15 yuan per gram [15] - Long-term trends for gold prices are influenced by the strength of the US dollar and inflation expectations, with current geopolitical events and monetary policy changes also playing significant roles [15]