- The report introduces a "Total Heat Indicator" as a proxy for market sentiment, which aggregates the browsing, watchlist, and click counts of individual stocks, normalized as a percentage of the total market activity and scaled by 10,000, with a range of [0, 10,000][7] - A "Broad-based Index Heat Rotation Strategy" is constructed based on the weekly moving average (MA2) of heat change rates for major indices (CSI 300, CSI 500, CSI 1000, CSI 2000, and "Others"). The strategy involves buying the index with the highest heat change rate at the end of each week, or staying in cash if "Others" has the highest rate[13][15] - The backtest results of the "Broad-based Index Heat Rotation Strategy" show an annualized return of 8.74% since 2017, with a maximum drawdown of 23.5%. The strategy achieved a return of 28.5% in 2025[15] - A "Concept Heat Strategy" is developed by selecting the top 5 concepts with the highest weekly heat change rates. Two portfolios are constructed: a "TOP" portfolio holding the top 10 stocks with the highest total heat within these concepts, and a "BOTTOM" portfolio holding the bottom 10 stocks with the lowest total heat[30] - The backtest results of the "BOTTOM" portfolio in the "Concept Heat Strategy" indicate an annualized return of 15.71% with a maximum drawdown of 28.89%. The portfolio achieved a return of 37% in 2025[32]

| 概念 | 今日涨跌幅（%） | 概念 | 今日涨跌幅（%） | | --- | --- | --- | --- | | 减速器 | 2.62 | 兵装重组概念 | -1.86 | | 动物疫苗 | 2.47 | PEEK材料 | -1.35 | | 禽流感 | 2.45 | 中船系 | -1.32 | | F5G概念 | 1.88 | 互联网保险 | -1.11 | | 华为海思概念股 | 1.87 | 中芯国际概念 | -0.82 | | 乳业 | 1.85 | 光刻胶 | -0.74 | | 铜缆高速连接 | 1.84 | 国家大基金持股 | -0.70 | | 智能音箱 | 1.82 | 脑机接口 | -0.64 | | 华为欧拉 | 1.82 | BC电池 | -0.63 | | 共封装光学(CPO) | 1.80 | 页岩气 | -0.58 | 截至8月19日收盘，华为海思股概念上涨1.87%，位居概念板块涨幅第5，板块内，29股上涨，诚迈科技 20%涨停，四川长虹涨停，赛微电子、强瑞技术、晶升股份等涨幅居前，分别上涨11.69%、9.73%、 8.74%。跌幅居前的有芯源微、和而泰、通富微电等 ...

Group 1 - The China AI 50 concept index rose by 4.15%, ranking 6th among concept sectors, with 47 stocks increasing in value, including Ruijie Networks which hit a 20% limit up [1] - Notable gainers included Yingwei Technology, Zhiwei Intelligent, and Zhongheng Electric, which also reached their daily limit up, while Haiguang Information, Green Harmonics, and China Mobile experienced declines [1] Group 2 - The top-performing concept sectors included Liquid Cooling Servers with a 6.31% increase, Huawei HiSilicon concept stocks up by 4.93%, and F5G concept rising by 4.61% [2] - The China AI 50 sector saw a net inflow of 5.401 billion yuan, with 31 stocks receiving net inflows, and 13 stocks exceeding 100 million yuan in net inflow, led by ZTE Corporation with 2.899 billion yuan [2] Group 3 - The net inflow ratios were highest for ZTE Corporation at 19.72%, Zhiwei Intelligent at 19.70%, and Yonyou Network at 16.13% [3] - The top stocks by net inflow included ZTE Corporation, China Unicom, and Yonyou Network, with respective net inflows of 2.899 billion yuan, 512 million yuan, and 495 million yuan [3][4] Group 4 - Other notable gainers included Hengxuan Technology with a 9.89% increase, and Maigemeite with a 9.04% rise, while China Mobile saw a slight decline of 0.13% [4][5] - The overall market sentiment was positive for the AI sector, with significant capital inflows indicating strong investor interest [2][6]

Group 1 - Huawei HiSilicon concept stocks rose by 4.36%, ranking 8th in the concept sector, with 49 stocks increasing in value [1][2] - Shenzhen Huaqiang hit the daily limit, while Runhe Software, Youbo Xun, and Jinsai Technology saw significant gains of 9.55%, 8.27%, and 7.85% respectively [1][2] - The Huawei HiSilicon concept sector experienced a net inflow of 1.712 billion yuan, with 32 stocks receiving net inflows, and 6 stocks exceeding 50 million yuan in net inflow [2][3] Group 2 - The top net inflow stocks included Shenzhen Huaqiang with 449 million yuan, Sichuan Changhong and Runhe Software both with 385 million yuan, and Beifang Huachuang with 91.72 million yuan [2][3] - The net inflow ratios for Shenzhen Huaqiang, Sichuan Changhong, and Runhe Software were 25.92%, 8.64%, and 7.93% respectively [3][4] - The trading volume and turnover rates for leading stocks in the Huawei HiSilicon concept were highlighted, with Shenzhen Huaqiang showing a turnover rate of 6.17% [3][4]