A股异动丨存储芯片股走强，澜起科技涨超6%

Group 1 - The A-share market for storage chip concept stocks has strengthened, with notable gains in companies such as Yingfangwei and Yiyaton reaching the daily limit, and Guanghe Technology increasing by 7% [1] - Major US storage companies, including Micron Technology, Western Digital, Seagate Technology, and SanDisk, have reached historical highs in the overnight market [1] - Long-term supply agreements (LTA) signed by major storage manufacturers, such as Winbond and Nanya Technology, have extended from one year to at least two years, with some clients discussing frameworks close to 2030 [1] Group 2 - The following companies have shown significant stock performance: - Yingfangwei (10.05% increase, market cap of 8.692 billion) with a year-to-date increase of 39.43% [2] - Yiyaton (10.02% increase, market cap of 14.5 billion) with a year-to-date increase of 17.65% [2] - Guanghe Technology (7.09% increase, market cap of 43.5 billion) with a year-to-date increase of 25.30% [2] - Lanke Technology (6.86% increase, market cap of 196 billion) with a year-to-date increase of 45.16% [2] - Other companies like Zhongjing Electronics, Guoxin Technology, and Huazhong Micro also reported increases above 5% [2] - The MACD golden cross signal has formed, indicating a positive trend for these stocks [2]