以下文章来源于量化投资 ，作者十拳剑 量化投资 . 百万滚到千万的实盘分享与思考，不定期分享资产配置研究： 1.广度上通过爬虫定期对全市场所有公募基金进行自 动数据获取、存储； 2.深度上计算时间序列特征、协方差矩阵；3.分别锚定2%和10%波动率，求解最大回报率下的 配置方案。 风险提示：本文所提到的观点仅代表个人的意见，所涉及标的不作推荐，据此买卖，风险自负。 作者： 十拳剑灵 来源：雪球 现代资产配置理论中 ， " 固定整体波动率 ， 分配各类资产波动率暴露以最大化收益率和夏普率 "的底层逻 辑 ， 源自对组合效率的极致追求 。 其核心是通过三个步骤重构投资范式 。 这篇文章以雪球的 " 三分法 " 工具回测对比三种策略 ： | 全部 B | 子账户 | | + 创建 | | | --- | --- | --- | --- | --- | | 纯长债 | | 日收益(05-27) | | 累计收益 | | 0.00 | | 0.00 | | 0.00 | | 占总资产 0.00% | | | | | | 短债固收加 | | 日收益(05-27) | | 累计收益 | | 0.00 | | 0.00 | ...

Core Viewpoint - Kanghong Pharmaceutical has experienced a decline in stock price over four consecutive trading days, with a cumulative drop of 8.09% [1] Company Overview - Chengdu Kanghong Pharmaceutical Group Co., Ltd. was established in 1996 and focuses on the research, production, sales, and after-sales service of biological products, traditional Chinese medicine, chemical drugs, and medical devices [1] - The company possesses advanced research and development centers and standardized industrial production bases, with a marketing network that spans the entire country [1] Shareholder Activity - Three funds under Dacheng Fund have entered the top ten shareholders of Kanghong Pharmaceutical, including: - Dacheng Strategy Return Mixed A, which increased its holdings in Q1 of this year - Dacheng Competitive Advantage Mixed A, which also increased its holdings in Q1 - Dacheng Rui Xiang Mixed A, which entered as a new shareholder in Q1 [1] - The performance of these funds in 2023 is as follows: - Dacheng Strategy Return Mixed A: 1.46% return, ranking 2872 out of 4548 - Dacheng Competitive Advantage Mixed A: 4.62% return, ranking 1825 out of 4548 - Dacheng Rui Xiang Mixed A: 2.35% return, ranking 2545 out of 4548 [1] Fund Management - The fund manager for Dacheng Strategy Return Mixed A, Dacheng Competitive Advantage Mixed A, and Dacheng Rui Xiang Mixed A is Xu Yan [5][7] - Xu Yan holds a master's degree in management from Fudan University and has extensive experience in fund management, having worked at Dacheng Fund Management Co., Ltd. since 2007 [6]