- 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]

Core Viewpoint - The Huawei HiSilicon concept stocks experienced a rise of 1.87% as of the market close on August 19, with significant contributions from several stocks within the sector [1]. Group 1: Stock Performance - Among the Huawei HiSilicon concept stocks, 29 stocks increased in value, with Chengmai Technology reaching a 20% limit up, Sichuan Changhong also hitting the limit up, and other notable gainers including Saiwei Electronics, Qiangrui Technology, and Jing Sheng Co., which rose by 11.69%, 9.73%, and 8.74% respectively [1]. - The concept sector's performance was varied, with the top gainers including the reducer concept at 2.62% and animal vaccine at 2.47%, while the military equipment restructuring concept saw a decline of 1.86% [1]. Group 2: Capital Flow - The Huawei HiSilicon concept sector saw a net inflow of 727 million yuan from main funds, with 20 stocks receiving net inflows, and 7 stocks exceeding 100 million yuan in net inflows [1]. - Sichuan Changhong led the net inflow with 1.506 billion yuan, followed by Chengmai Technology, Runhe Software, and Yihua Co., which received net inflows of 398 million yuan, 273 million yuan, and 238 million yuan respectively [1][2]. - The net inflow ratios for Sichuan Changhong, Chengmai Technology, and Yihua Co. were 25.98%, 21.65%, and 15.91% respectively, indicating strong investor interest in these stocks [2].

Strong Stocks - As of August 18, the Shanghai Composite Index rose by 0.85% to 3728.03 points, the Shenzhen Component Index increased by 1.73% to 11835.57 points, and the ChiNext Index climbed by 2.84% to 2606.2 points [1] - A total of 118 stocks in the A-share market hit the daily limit, with the top three strong stocks being: Great Wall Military Industry (601606), Da Zhi Hui (601519), and Founder Technology (600601) [1] - Great Wall Military Industry had 13 trading days with 8 limit-ups, a turnover rate of 17.6%, and a transaction amount of 7.799 billion yuan [1] - Da Zhi Hui achieved 2 consecutive limit-ups, with a turnover rate of 7.45% and a transaction amount of 2.458 billion yuan [1] - Founder Technology also had 2 consecutive limit-ups, with a turnover rate of 9.93% and a transaction amount of 3.031 billion yuan [1] Strong Concept Sectors - The top three concept sectors with the highest increase in A-shares are: Liquid Cooling Servers, Sci-Tech New Stocks, and Huawei HiSilicon Concept Stocks [2] - The Liquid Cooling Servers sector saw a decline of 6.31%, with 96.55% of its constituent stocks rising [2] - The Sci-Tech New Stocks sector experienced a decline of 5.51%, with 93.33% of its constituent stocks increasing [2] - The Huawei HiSilicon Concept Stocks sector had a decline of 4.93%, with 94.0% of its constituent stocks rising [2] - Other notable sectors include F5G Concept and Short Drama Games, both with declines of 4.61% but high percentages of rising constituent stocks [2]

Group 1 - The liquid cooling server concept has seen a significant increase of 6.31%, making it the top-performing sector on the market, with 115 stocks rising, including notable gains from Shuguang Technology at 30% and other companies like Gaolan Co., Guanzhong Energy, and Qiangrui Technology at 20% [1][2] - The liquid cooling server sector attracted a net inflow of 6.041 billion yuan from main funds, with 67 stocks receiving inflows, and 19 stocks exceeding 100 million yuan in net inflows, led by ZTE Corporation with 2.899 billion yuan [2][3] - The top stocks by net inflow ratio include Lingyun Co. at 32.75%, Liou Co. at 31.80%, and Yongtai Technology at 27.99% [3][4] Group 2 - The liquid cooling server sector's performance is contrasted by the decline in other sectors, such as metal lead and industrial companies, which saw minor decreases [2][9] - The overall market sentiment is reflected in the mixed performance of various sectors, with some experiencing significant gains while others face declines, indicating a selective investment environment [2][9] - The data indicates a strong interest in liquid cooling technology, suggesting potential growth opportunities in this niche market [1][2]

Group 1 - Huawei HiSilicon concept stocks rose by 4.93%, ranking second in the concept sector, with 47 stocks increasing in value [1] - Notable gainers include Jing Sai Technology with a 30% limit up, and Qiang Rui Technology with a 20% limit up, while De Long Laser and Hui Bo Yun Tong were among the biggest losers, down 6.91% and 2.36% respectively [1][4] - The liquid cooling server concept led the day's gains with a 6.31% increase, while the gold concept saw a slight decline of 0.24% [1] Group 2 - The Huawei HiSilicon concept sector attracted a net inflow of 1.721 billion yuan, with 31 stocks receiving net inflows, and 7 stocks exceeding 100 million yuan in net inflows [1] - Shenzhen Huaqiang topped the net inflow list with 499.7 million yuan, followed by Hao Shang Hao and Runhe Software with 415.25 million yuan and 355 million yuan respectively [1][2] - The net inflow ratios for leading stocks include Shenzhen Huaqiang at 44.92% and Hao Shang Hao at 39.45% [2]

Group 1 - As of August 18, Foxconn concept stocks rose by 3.82%, ranking 9th in terms of sector gains, with 86 stocks increasing in value [1] - Among the top gainers, Qiangrui Technology hit the daily limit, while Kosen Technology, Baowu Magnesium, and Lingyi Zhi Zao also reached their daily limits, with respective increases of 20%, 19.02%, and 18.19% [1] - The stocks with the largest declines included Yaxiang Integration, Aoshikang, and Dazhu Laser, which fell by 2.40%, 2.04%, and 1.83% respectively [1] Group 2 - The Foxconn concept sector saw a net inflow of 323 million yuan from main funds today, with 42 stocks receiving net inflows, and 6 stocks exceeding 100 million yuan in net inflows [2] - Leading the net inflow was Lingyi Zhi Zao with 952 million yuan, followed by Goer Technology, Baowu Magnesium, and Shenglan Technology with net inflows of 617 million yuan, 181 million yuan, and 160 million yuan respectively [2] Group 3 - In terms of fund inflow ratios, Kosen Technology, Baowu Magnesium, and Lingyi Zhi Zao had the highest net inflow rates at 44.78%, 22.73%, and 20.39% respectively [3] - The Foxconn concept fund inflow rankings showed that Lingyi Zhi Zao had a daily increase of 9.98% with a turnover rate of 6.21% and a main fund flow of approximately 952.21 million yuan [3][4] - Other notable stocks included Goer Technology with an 8.34% increase and a turnover rate of 8.23%, and Baowu Magnesium also with a 9.98% increase and a turnover rate of 6.49% [4]

Group 1 - F5G concept stocks increased by 4.61%, ranking third among concept sectors, with 31 stocks rising, including Dekoli with a 20% limit up, and New Asia Electronics and Cambridge Technology also hitting the limit up [1][2] - The leading gainers in the F5G sector included Shijia Photon, Dongtian Micro, and Jinxin Nuo, which rose by 16.38%, 14.32%, and 11.89% respectively [1] - The top decliners in the sector were TeFa Information, Tiandi Technology, and Hengtong Optic-Electric, which fell by 0.84%, 0.80%, and 0.66% respectively [1] Group 2 - The F5G sector saw a net inflow of 1.451 billion yuan, with 22 stocks receiving net inflows, and 7 stocks exceeding 100 million yuan in net inflows [2] - The stock with the highest net inflow was Zhongji Xuchuang, with a net inflow of 425 million yuan, followed by Cambridge Technology, New Asia Electronics, and Guangxun Technology with net inflows of 386 million yuan, 300 million yuan, and 142 million yuan respectively [2][3] - New Asia Electronics, Cambridge Technology, and Dekoli had the highest net inflow ratios at 26.07%, 13.46%, and 10.56% respectively [3] Group 3 - The F5G concept stocks' performance was highlighted by the significant trading volumes and turnover rates, with New Asia Electronics and Cambridge Technology showing high turnover rates of 13.92% and 18.50% respectively [3] - The overall market sentiment for the F5G sector appears positive, as indicated by the substantial net inflows and the performance of key stocks within the sector [2][3]

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 - The copper cable high-speed connection concept increased by 3.85%, ranking 8th among concept sectors, with 34 stocks rising, including Yidong Electronics with a 20% limit up, and Jintian Co., New Asia Electronics also hitting the limit up [1] - The leading gainers in the copper cable high-speed connection sector included Shenglan Co., Jinxin Co., and Zhongfu Circuit, which rose by 15.76%, 11.89%, and 10.37% respectively [1] - The sector saw a net inflow of 534 million yuan from main funds, with 21 stocks receiving net inflows, and 7 stocks exceeding 50 million yuan in net inflow, led by New Asia Electronics with a net inflow of 300 million yuan [2][3] Group 2 - The top stocks by net inflow ratio included New Asia Electronics, Shenglan Co., and Wolong Materials, with net inflow ratios of 26.07%, 11.90%, and 6.63% respectively [3] - The trading volume and turnover rates for key stocks in the copper cable high-speed connection sector showed significant activity, with New Asia Electronics having a turnover rate of 13.92% and a trading volume of approximately 300 million yuan [3][4] - Stocks such as Jintian Co. and Yidong Electronics also demonstrated strong performance with respective increases of 10.01% and 19.99% [4][5]

Group 1 - The Co-Packaged Optics (CPO) concept has seen a rise of 4.55%, ranking fifth among concept sectors, with 91 stocks increasing in value [1][2] - Notable stocks that reached the daily limit include Qiangrui Technology, Ruijie Networks, and Dekeli, all achieving a 20% increase, while Guangku Technology, Shijia Optics, and Juguang Technology also showed significant gains of 18.29%, 16.38%, and 15.10% respectively [1][2] - The sector experienced a net inflow of 3.537 billion yuan, with 58 stocks receiving net inflows, and 18 stocks exceeding 100 million yuan in net inflow [2][3] Group 2 - Leading the net inflow is Lingyi Technology, which attracted 952 million yuan, followed by Zhongji Xuchuang, Jianqiao Technology, and Chongda Technology with net inflows of 425 million yuan, 386 million yuan, and 220 million yuan respectively [2][3] - The net inflow ratios for Lingyi Technology, Chongda Technology, and Jianqiao Technology are 20.39%, 16.51%, and 13.46% respectively, indicating strong investor interest [3] - The overall performance of the CPO sector reflects a positive trend, with significant participation from institutional investors [2][3]