- 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]

风险提示：市场有风险，投资需谨慎。 康希通信主营业务为半导体相关技术研发，涉及低空经济、星闪概念及车联网等领域。公司注册地位于 上海，总市值59.94亿元，流通市值43.84亿元。 截至2025年8月22日15时，康希通信股价报14.12元，较前一交易日上涨0.31元，涨幅2.24%。当日开盘 价为13.84元，最高触及14.22元，最低下探13.70元，成交额1.87亿元，换手率4.28%。 资金流向方面，8月22日主力资金净流出180.46万元，近五日累计净流出1605.98万元。 消息面上，康希通信公告称，公司2025年员工持股计划已完成股票非交易过户。此次过户涉及569，198 股，占公司总股本的0.1341%，过户价格为5.81元/股。 ...

Group 1 - The concept of China-South Korea Free Trade Zone has seen a rise of 2.30%, ranking second among concept sectors, with 8 stocks increasing in value, including Lianyungang which hit the daily limit, and Huaguang Yuanhai, Qingdao Jinwang, and Rizhao Port showing notable gains of 26.88%, 3.41%, and 1.87% respectively [1][2] - The main inflow of funds into the China-South Korea Free Trade Zone concept sector amounted to 147 million yuan, with Lianyungang leading the net inflow at 180 million yuan, followed by Qingdao Jinwang, Qingdao Shuangxing, and Langzi Co., which received net inflows of 68.51 million yuan, 15.67 million yuan, and 14.28 million yuan respectively [2][3] - In terms of fund inflow ratios, Lianyungang, Chunxue Food, and Liaogang Co. had the highest net inflow rates of 11.08%, 5.63%, and 3.36% respectively [3] Group 2 - The stocks with the largest declines included Xinhua Jin, Haicheng Bangda, and Haodangjia, which fell by 9.34%, 3.27%, and 0.85% respectively [1][4] - The trading volume and turnover rates for the stocks in the China-South Korea Free Trade Zone concept varied, with Lianyungang showing a turnover rate of 18.09% and Qingdao Jinwang at 35.94% [3]