证券研究报告 | 策略点评 2026 年 02 月 27 日 投资要点 分析师：孟之绪 执业编号：S0300524080001 电话： 邮箱：mengzhixu@ykzq.com 投资策略研究 指数涨跌情况：今日 A 股主要指数涨跌不一。截止收盘，沪指上涨 0.39%，收 报 4162.88 点；深证成指跌 0.06%，收报 14495.09 点；创业板指跌 1.04%， 收报 3310.3 点；科创 50 指数涨 0.15%，收报 1488.02 点。总体上，全天个股 涨多跌少，Wind 数据显示，全市场 3267 只个股上涨，2066 只个股下跌，146 只个股收平。沪深两市今日成交额合计 24880 亿元，较上个交易日缩量 504 亿元。 行业涨跌情况：今日申万一级行业涨多跌少，钢铁、煤炭、有色金属、公用 事业、农林牧渔等行业领涨，涨幅分别为 3.37%、3.20%、3.10%、2.27%、2.06%， 建筑材料、通信、电子、汽车、家用电器等行业领跌，跌幅分别为 1.45%、1.38%、 0.71%、0.41%、0.39%。 概念板块涨跌情况：今日涨幅居前的概念板块为稀有金属精选、稀土、培育 钻石、小金 ...

Market Overview - The A-share market showed a mixed performance today, with major indices mostly closing higher. The Shanghai Composite Index rose by 0.05% to close at 4085.77 points, while the Shenzhen Component increased by 0.06% to 14030.56 points. The ChiNext Index saw a gain of 0.31%, closing at 3329.69 points. Overall, there were 2164 stocks that rose, 3188 that fell, and 107 that remained unchanged. The total trading volume in the Shanghai and Shenzhen markets reached 285.41 billion yuan, an increase of 47.6 billion yuan compared to the previous trading day [1][10]. Industry Performance - Among the Shenwan first-level industries, the sectors that performed well included Comprehensive, Coal, Electronics, and Communications, with increases of 3.86%, 2.47%, 1.25%, and 1.24% respectively. Conversely, the sectors that experienced declines were Oil & Petrochemicals, Non-bank Financials, Beauty Care, Computers, and Banks, with decreases of 1.73%, 1.13%, 1.03%, 0.81%, and 0.72% respectively [1][10]. Concept Sector Performance - The concept sectors that saw the most significant gains today included Semiconductor Equipment, Lithography Machines, the SMIC International Supply Chain, Semiconductor Materials, Industrial Gases, Rare Earths, Semiconductor Wafers, CRO, Wafer Industry, Nuclear Fusion, Selected Coal Mining, Cobalt Mining, Optical Modules (CPO), National Big Fund, and Aquaculture [2].

Core Insights - The AI industry chain is experiencing an upward trend, with significant gains in upstream sectors such as semiconductor wafers and related concepts [1] - The CSI Artificial Intelligence Theme Index rose by 1.3%, and the Shanghai Stock Exchange Sci-Tech Innovation Board AI Index increased by 1.1%, marking five consecutive days of gains [1] - The Kweichow Moutai AI ETF (588730) saw a net inflow of 20 million yuan over the first two trading days, indicating strong investor interest [1] Industry Analysis - According to Huatai Securities, the artificial intelligence sector is in a rapid development phase, with continuous technological innovation and expansion of application scenarios [1] - Increased policy support and growing market demand are expected to create new development opportunities for the AI industry chain [1] - The focus for future investments will be on mid-to-upstream foundational technology areas such as chips and algorithm frameworks, highlighting the significant long-term investment value of artificial intelligence [1]

Market Overview - The A-share market showed a positive trend today, with major indices mostly rising. The Shanghai Composite Index increased by 0.71% to close at 3950.31 points, while the Shenzhen Component Index rose by 2.02% to 13289.18 points. The Sci-Tech 50 Index saw a significant increase of 4.35%, closing at 1462.22 points, and the ChiNext Index rose by 3.57% to 3171.57 points. Overall, 3025 stocks rose, 2273 fell, and 138 remained unchanged, with a total trading volume of 19742 billion yuan, an increase of 3303 billion yuan compared to the previous trading day [1][2]. Industry Performance - Among the primary industries, the telecommunications, electronics, defense, electric equipment, computer, and non-ferrous metals sectors experienced notable gains. Conversely, the petroleum and petrochemical, coal, food and beverage, real estate, transportation, and steel industries faced declines [1][2]. Sector Highlights - The leading sectors in terms of growth included memory storage, circuit boards, HBM, ASIC chips, optical modules (CPO), semiconductor silicon wafers, GPUs, national big fund, semiconductor selections, wafer industry, semiconductor industry, satellite internet, servers, chips, and optical communication [2].

Market Overview - The A-share market saw a majority of major indices decline today, with the Shanghai Composite Index down by 0.19% closing at 3889.50 points, the Shenzhen Component down by 0.93% at 13231.47 points, and the ChiNext Index down by 1.11% at 3078.76 points. The STAR 50 Index, however, increased by 1.40% to 1473.02 points. Overall, there were 1682 stocks that rose while 3628 stocks fell, with a total trading volume of 23547 billion yuan, a decrease of 1609 billion yuan from the previous trading day [1][2]. Industry Performance - Among the 31 first-level industries, only a few sectors such as non-ferrous metals, environmental protection, steel, national defense and military industry, banking, and computing saw gains, with respective increases of 3.35%, 1.65%, 1.49%, 0.86%, 0.74%, and 0.22%. Conversely, the automotive, home appliances, beauty care, media, and pharmaceutical industries experienced the largest declines, with decreases of 2.33%, 1.74%, 1.58%, 1.54%, and 1.47% respectively [1][2]. Concept Sectors - The leading concept sectors in terms of gains today included rare earths, rare earth permanent magnets, photoresists, semiconductor silicon wafers, rare metals, SMIC, lithium battery electrolytes, wafer industry, small metals, operating systems, semiconductor materials, gold and jewelry, continuous boards, pre-increase, and cobalt mines [2][11].

Market Overview - The A-share market showed a positive trend today, with major indices mostly rising. The Shanghai Composite Index increased by 0.83% to close at 3853.64 points, while the Shenzhen Component rose by 1.80% to 13356.14 points. The Sci-Tech 50 surged by 3.49% to 1456.47 points, and the ChiNext Index gained 2.28% to 3185.57 points. Overall, 4457 stocks rose, 852 fell, and 120 remained unchanged, with total trading volume in the Shanghai and Shenzhen markets amounting to 23268 billion yuan, a decrease of 1675.98 billion yuan compared to the previous trading day [1][2]. Industry Performance - Among the Shenwan first-level industries, all sectors except for banking, coal, and telecommunications experienced gains today. The leading sectors in terms of growth included power equipment, electronics, media, computers, real estate, and machinery equipment [1]. - The top-performing concept sectors included semiconductor silicon wafers, semiconductor equipment, wafer industry, semiconductor materials, the SMIC industry chain, BC batteries, semiconductor selections, advanced packaging, semiconductor industry, national big fund, memory, HBM, industrial gases, lithium battery electrolytes, and TOPcon batteries [2].

Market Overview - The A-share market showed a positive trend today, with major indices mostly rising. The Shanghai Composite Index increased by 1.14% to close at 3843.60 points, the Shenzhen Component Index rose by 2.25% to 12571.37 points, the ChiNext Index gained 3.82% to 2827.17 points, and the Sci-Tech 50 surged by 7.23% to 1364.60 points [1][10] - Overall, the market saw a mixed performance among individual stocks, with 2867 stocks rising and 2400 stocks falling. The total trading volume in the Shanghai and Shenzhen markets was 29,708 billion yuan, a decrease of 1,947 billion yuan compared to the previous trading day [1] Industry Performance - Among the Shenwan first-level industries, the leading sectors included telecommunications, electronics, defense and military industry, computers, and non-bank financials, with gains of 7.14%, 5.53%, 2.29%, 2.05%, and 1.49% respectively. Conversely, the coal, agriculture, forestry, animal husbandry and fishery, textile and apparel, food and beverage, and pharmaceutical and biological industries experienced declines, with losses of 0.81%, 0.73%, 0.47%, 0.38%, and 0.20% respectively [1][10] - The top-performing concept sectors included circuit boards, photoresists, wafer industry, SMIC, third-generation semiconductors, semiconductors, semiconductor equipment, continuous boards, 5G, integrated circuits, cameras, national big fund, semiconductor silicon wafers, satellite internet, and stock trading software [2][12]