20%涨停潮，A股超级赛道突然逆转

Market Performance - A-shares rebounded today, with technology stocks leading the rally, as the Sci-Tech 50 index surged over 7%, reaching a 3.5-year high above 1300 points [1] - The ChiNext index also saw a significant increase of nearly 4%, breaking through 2800 points, marking a new 3-year high [1] - The Shanghai Composite Index and Shenzhen Component Index strengthened in the afternoon, with total trading volume exceeding 3 trillion yuan [1] Sector Performance - The communication equipment, chips, new energy vehicles, and aerospace equipment sectors experienced the largest gains, while agriculture, coal, assisted reproduction, and entertainment products sectors faced the most significant declines [2] - The electronic industry attracted over 31 billion yuan in net inflow from major funds, with communication and computer sectors receiving net inflows of over 13.5 billion yuan and 7.9 billion yuan, respectively [3] Investment Insights - The current price-to-earnings ratio (TTM) for the CSI 300 is 13.9 times, while the Hang Seng Index stands at 11.5 times, indicating over a 40% discount compared to U.S. stocks and lower than markets in Japan and Europe [3] - The domestic stock market is not yet in a bubble phase, and there remains room for asset revaluation, suggesting that any pullbacks could present buying opportunities [3] New Energy Vehicle Sector - The new energy vehicle sector saw a surge in stock prices, with several companies hitting the daily limit up, including Sunyu Precision and Longyang Electronics, which both saw a 30% increase [3] - The upcoming Chengdu International Auto Show is expected to highlight the rise of new energy brands and the absence of luxury brands, indicating a shift in market dynamics [6] Communication Technology Developments - The communication equipment sector experienced a strong rally, with the index rising nearly 8%, marking the largest single-day increase since October of the previous year [6] - Recent government initiatives, including guidelines to promote satellite communication and advancements in 6G technology, are expected to further boost the sector [8]