202[Table_ReportInfo] 6 年 02 月 25 日 证券研究报告•金融工程专题报告 资产配置研究系列三 基于 BLACK-LITTERMAN 模型 融合资产择时与风格轮动的资产配置研究 在全球经济周期缩短、地缘政治冲突与技术革命叠加的背景下，市场"不确定性" 已成为投资管理的核心挑战，构建抗脆弱的组合是资本稳健增值的关键。传统均 值-方差模型（MVO）虽为资产配置基石，却因输入参数敏感性高、难以系统融合 主观观点而受限。Black-Litterman（BL）模型通过贝叶斯方法将市场均衡收益与 投资者观点结合，在量化严谨性中兼容主观判断，为机构资产配置提供新范式。 本文基于 BL模型原理，构建"战略+战术"双轮驱动的资产配置模型。战略端以 资产择时与回归分析生成资产收益后验分布，提升配置决策的前瞻性；战术端设 计 A股风格轮动策略，动态跟踪市场风格切换优化投资组合，增强 A股资产收益 表现。模型实现了长期战略配置与短期战术调整的有机结合，为大类资产配置提 供了系统性解决方案。 资产择时层 债券端立足经济基本面（经济增长、地产周期）与市场利率（质押回购、国债利 率）择时中债国债；商品端围绕黄金 ...

Investment Rating - The report maintains an "Outperform" rating for the engineering machinery sector [1]. Core Insights - January 2026 saw strong sales growth in excavators and loaders, driven by a combination of replacement cycles and external demand. The outlook for 2026 is positive, supported by proactive fiscal policies, stabilization in the European construction sector, and sustained high demand in emerging markets. The report emphasizes the importance of focusing on domestic demand renewal and overseas expansion strategies [5][11]. - The engineering machinery index rose approximately 0.15% in January 2026, underperforming the Shanghai Composite Index by 3.61 percentage points [11]. - Excavator sales in January 2026 reached 18,708 units, a year-on-year increase of 49.5%, with domestic sales at 8,723 units (up 61.4%) and exports at 9,985 units (up 40.5%) [16]. - Loader sales for the same month totaled 11,759 units, reflecting a 48.5% year-on-year increase, with domestic sales of 5,293 units (up 42.8%) and exports of 6,466 units (up 53.4%) [16]. Summary by Sections Market Review - The engineering machinery index in January 2026 increased by about 0.15%, lagging behind major indices such as the Shanghai Composite and CSI 300 [11]. - The performance of different segments showed mixed results, with the average price-to-earnings (PE) ratios for complete machine manufacturing and components being 29 and 39, respectively [11]. Industry Tracking - The report highlights significant growth in excavator and loader sales, with excavators showing a 49.5% increase and loaders a 48.5% increase in January 2026 [16][18]. - The report notes that electric excavators and loaders are gaining traction, with electric loader sales reaching 2,990 units and a penetration rate of 25.43% [16]. Macro Dynamics - The manufacturing PMI for January 2026 was reported at 49.3%, indicating a slight contraction in manufacturing activity. However, production levels remain above the critical point, suggesting ongoing expansion in manufacturing [44]. - Infrastructure investment is supported by the issuance of special bonds amounting to approximately 367.7 billion yuan, a year-on-year increase of 79.5% [5]. Key Targets - Recommended key players in the sector include leading manufacturers such as Zoomlion (000157), Sany Heavy Industry (600031), and XCMG (000425), as well as core component suppliers like Hengli Hydraulic (601100) and Aidi Precision (603638) [5][54].

机器学习因子选股月报（2026 年 3 月） 截至 2026年 2月 25日，2月当期多头组合超额收益最高的五个行业（除综合） 分别为石油石化、通信、电子、有色金属、计算机，多头组合相对行业指数超 额收益分别为 7.91%、3.11%、3.06%、2.78%以及 2.78%。 近一年来看，多头组合月平均超额收益最高的五个行业（除综合）分别为房地 产、商贸零售、汽车、建筑、消费者服务，超额收益分别为 3.83%、2.04%、 1.93%、1.50%以及 1.49%。且 29个中信一级行业（除综合）中， GAN_GRU 因子多头组合近一年有 7个行业未跑赢对应中信一级行业指数（交通运输、建 材、煤炭、非银金融、传媒、有色、通信）。 摘要 西南证券研究院 [Table_Author] 分析师：郑琳琳 执业证号：S1250522110001 邮箱：zhengll@swsc.com.cn 分析师：祝晨宇 执业证号：S1250525100004 邮箱：zhcy@swsc.com.cn [Table_ReportInfo] 2026 年 02 月 26 日 证券研究报告•金融工程报告 机器学习金融工程月报 相关研究 请务必 ...

[Table_ReportInfo] 2026 年 02 月 26 日 证券研究报告•金融工程报告 机器学习金融工程月报 机器学习因子选股月报（2026 年 3 月） 截至 2026年 2月 25日，2月当期多头组合超额收益最高的五个行业（除综合） 分别为石油石化、通信、电子、有色金属、计算机，多头组合相对行业指数超 额收益分别为 7.91%、3.11%、3.06%、2.78%以及 2.78%。 [Table_Summary] GAN_GRU 因子：基于前期报告《量价时序特征挖掘模型在深度学习因子中 的应用》（2024年 7月 11日）中提到的 GAN_GRU模型，定期更新 GAN_GRU 因子自 2024年以来表现情况。其中 GAN_GRU因子为利用生成式对抗神经网 络 GAN 模型进行量价时序特征处理后再利用 GRU 模型进行时序特征编码得 到的选股因子。 表现跟踪：自 2019 年 2月至 2026 年 2月，月频调仓的基础上，GAN_GRU 因子在全 A 范围内 IC均值 0.1096***，多头组合年化超额收益率 22.32%；截 至 2026年 2月 25日，GAN_GRU 最新一期 IC为-0. ...

博汇纸业（600966） 白卡龙头迎周期拐点，整合预期打开成长空间 西南证券研究院 轻工研究团队 2026年2月 核心观点 1 推荐逻辑：1）白卡纸行业供给增长放缓，供应压力缩减，行业的供需格局有望边际改善，吨盈利或迎 来触底回升；2）需求端看，高端白卡及白卡出口的需求亮眼，同时在咖啡茶饮等增量需求支撑下，预 计需求端仍将保持平稳增长态势；3）博汇纸业作为国内白卡纸龙头，背靠全球浆纸龙头金光集团，成 为其唯一A股上市平台，在同业竞争资产整合完成后，公司的供应链实力进一步增强，有望带来盈利弹 性的充分释放。 行业盈利触底，供给增长放缓，供需格局有望改善。过去几年行业供给大幅释放，供需失衡导致白卡纸 价一度跌至近4000元/吨，纸厂盈利显著承压。进入25年下半年，"反内卷"倡议下龙头停机供给收缩 ，新产能投产速度明显放缓，纸价从25Q4起触底反弹，浆价目前仍在低位盘整，吨纸盈利有望逐步回 升。未来供给结构持续优化，集中度提升，龙头优势进一步夯实。 以纸代塑趋势不减，结构性机会带动消费量增长趋稳。虽然消费需求的暂时疲弱对白卡纸需求形成一定 压制，但考虑到以纸代塑的政策支持、茶饮放量带动食品级白卡需求增长、白卡出口保 ...

Investment Rating - The report gives a "Buy" rating for Bohui Paper Industry [4]. Core Insights - The white card paper industry is expected to see a marginal improvement in supply-demand dynamics as supply growth slows down, potentially leading to a rebound in profitability per ton [4]. - Demand for high-end white card paper and exports remains strong, supported by incremental demand from coffee and tea beverages, indicating stable growth in the demand side [4]. - Bohui Paper, as a leading player in the domestic white card paper market, benefits from its backing by the global pulp and paper giant, Golding Group, enhancing its supply chain capabilities and profitability potential [4]. Company Overview - Bohui Paper Industry, established in 1994 and listed in 2004, is a leading white card paper manufacturer in China. The company was acquired by Golding Group in 2020, becoming its only A-share listed platform for domestic pulp and paper assets [10][12]. - The company focuses on various paper products, including white card paper, cultural paper, boxboard, and gypsum face paper, with white card paper being its core product [10][12]. - Bohui has production bases in Shandong and Jiangsu, continuously optimizing its product structure and expanding into high-value markets to increase market share [10][12]. Industry Analysis - The white card paper industry is currently experiencing a cyclical bottom, with expectations for marginal improvement in profitability as supply growth slows and demand stabilizes [4][36]. - The industry has faced significant supply-demand imbalances in recent years, leading to price declines, but recent initiatives to reduce supply and improve efficiency are expected to support price recovery [4][36]. - The trend of replacing plastic with paper continues to drive demand for white card paper, particularly in food packaging and environmentally friendly applications [39][42]. Profit Forecast and Valuation - The report forecasts net profits for Bohui Paper to be CNY 186 million, CNY 408 million, and CNY 551 million for the years 2025, 2026, and 2027, respectively, with corresponding price-to-earnings ratios of 54x, 25x, and 18x [4].

[Table_Report 2026 年 02 月 24 日 证券研究报告•固定收益定期报告 债券市场跟踪周报（2.9-2.14） 10 年国债突破阻力位，交易机构呈现分化 核心观点 西南证券研究院 [Table_Author] 分析师：杨杰峰 执业证号：S1250523060001 电话：18190773632 邮箱：yangjf@swsc.com.cn 分析师：叶昱宏 执业证号：S1250525070010 电话：18223492691 邮箱：yeyuh@swsc.com.cn 相关研究 请务必阅读正文后的重要声明部分 S 10年国债突破 1.8%关键点位，机构行为呈现显著分化。2月 9日，10年国债 活跃券（250016）中债估值收益率成功突破 1.800%阻力位并下行至 1.799%； 截至 2月 12日，250016持续突破并温和下行至 1.775%；但在 2月 13日， 10 年国债下行受阻反弹，显露出震荡行情迹象。在本轮长债行情的背后，不 同类型的机构扮演了截然不同的角色。券商是本轮收益率下行的核心推动力 量。2月 9日至 12日期间，券商对 7-10年国债的净买入规模高达 241.92亿 元， ...

[Table_ReportInfo] 2026 年 02 月 24 日 证券研究报告•固定收益定期报告 债券 ETF 周度跟踪（2.9-2.13） 春季配置需求回归，债券 ETF 有望扩张 摘要 西南证券研究院 [Table_Author] 分析师：杨杰峰 执业证号：S1250523060001 电话：18190773632 邮箱：yangjf@swsc.com.cn 分析师：叶昱宏 执业证号：S1250525070010 电话：18223492691 邮箱：yeyuh@swsc.com.cn 联系人：李茂怡 电话：15528164673 邮箱：limaoyi@swsc.com.cn 相关研究 请务必阅读正文后的重要声明部分 S 各类债券 ETF资金净流入情况：市场情绪偏多，债券 ETF净流入金额转正。 上周利率债类 ETF、信用债类 ETF、可转债类 ETF净流入资金分别+50.98亿 元、+142.12亿元、+5.87亿元，债券 ETF市场合计净流入金额 198.96亿元。 展望后市，债券 ETF 规模在经历年初季节性资金流出后，有望随机构春季配 置需求的回归以及"两会"定调的关键政策重回扩张通道。品种上 ...

Core Insights - The chemical industry is at the beginning of a new prosperity cycle globally, with Chinese chemical companies showing stronger profit foundations and elasticity due to past expansions and capital expenditures [5][11][29] - Focus on cyclical chemical products, particularly those with resource attributes and potential in the real estate chain [4][5] - The demand from major economies like China and the US is expected to improve, with China's GDP projected to exceed 140 trillion yuan, growing at 5.0% year-on-year [5][22] Group 1: Global and Domestic Chemical Landscape - The global chemical landscape is improving, with China's chemical sector becoming more resilient [9][12] - China's share of the global chemical market has significantly increased from 13% in 2004 to 47% in 2024, indicating its growing importance in the global chemical industry [14][29] - The capital expenditure in the global chemical sector has paused, with many overseas chemical companies reducing production, which may benefit Chinese companies [14][16] Group 2: Resource Attributes in Chemical Products - Three main resource directions are emphasized: mineral resources (like phosphate and potash), indicator resources (such as pesticides and refrigerants), and channel resources (like compound fertilizers) [5][33] - China's phosphate reserves rank second globally, with a steady increase in demand driven by both traditional fertilizer needs and emerging sectors like lithium iron phosphate for batteries [33][36] - The supply of fertilizers is expected to contract in 2025, with production of monoammonium phosphate and diammonium phosphate projected to decrease by 6.73% and 6.86% respectively [39] Group 3: Real Estate Chain Chemical Products - The market currently has low expectations for the recovery of demand in the real estate chain, but there is potential for significant improvement due to government stimulus policies [5][22] - The supply concentration of chemical products related to the real estate chain is gradually increasing, which may lead to faster and easier supply-demand improvements [5] Group 4: New Materials and Domestic Substitution - The report highlights the importance of domestic substitution and the development of new materials in line with China's strategic plans for emerging industries [7][8] - Key areas of focus include lubricating oil additives, semiconductor materials, and bio-based materials [7] Group 5: Investment Recommendations - Suggested companies for investment include Hualu Chemical, Xin Fengming, Yuntianhua, and others, focusing on those with strong market positions and innovative capabilities [7][8]

Core Insights - The commercial aerospace sector has officially entered a construction phase, marking the beginning of a new "constellation-level Capex" cycle in the communication industry, which is identified as the most certain core theme for 2026. The transition from technology validation to large-scale constellation deployment is driven by national strategic priorities and the "14th Five-Year Plan" [4][6] - The investment logic in commercial aerospace has shifted from thematic drivers to a focus on network construction, emphasizing the need for faster, cheaper, and more frequent satellite launches. Key constraints such as rocket capabilities, launch facilities, and ground communication systems are being gradually lifted [4][6] - The demand for high-speed optical connections is increasing as a critical component of AI computing infrastructure upgrades, with optical module port rates evolving towards 800G and 1.6T, indicating strong visibility and early realization of orders [4][6] - Liquid cooling technology is becoming a key structural increment in AI computing infrastructure upgrades, as traditional air cooling solutions face efficiency and space constraints. The penetration rate of liquid cooling is expected to rise alongside capital expenditures in computing [4][6] Industry Review - The communication sector maintained a positive revenue growth of 2.9% year-on-year, reaching a total revenue of 19.5 trillion yuan in the first three quarters of 2025, supported by the 5G-A construction cycle and positive impacts from optical modules and liquid cooling [20][19] - Profit levels in the communication sector improved, with total profits reaching 193.76 billion yuan, a year-on-year increase of 9.1%, indicating a positive trend in profitability [21][19] - The overall expense control was effective, with a sales expense ratio of 6.5% and a management expense ratio of 5.1% in the first three quarters of 2025, both showing a decrease compared to the previous year [26][25] Key Strategies - The first main strategy focuses on the construction phase of commercial aerospace, which is expected to drive a new "constellation-level Capex" cycle in the communication industry [6][36] - The second main strategy emphasizes the ongoing demand for AI computing, which will continue to drive upgrades in communication infrastructure [6][36] Investment Focus - Key stocks to watch include Kunheng Shunwei (688283), Aofei Data (300738), and Guanghuan Xinwang (300383), which are positioned to benefit from the trends in commercial aerospace and AI computing [4][6]