- Model name: Broad-based index rotation strategy; Model construction idea: Using the weekly change rate of the total heat of different broad-based indices to construct a rotation strategy; Model construction process: Calculate the weekly heat change rate of different groups of stocks and smooth it using MA2. On the last trading day of each week, buy the broad-based index with the highest total heat change rate MA2. If the highest change rate is in the "other" group, stay in cash. The strategy's net value is shown in the report. The formula is: $ \text{Heat Change Rate MA2} = \frac{\sum_{i=1}^{n} \text{Heat Change Rate}_i}{n} $ where $ n $ is the number of weeks. The strategy's annualized return since 2017 is 8.74%, with a maximum drawdown of 23.5%. The return since 2025 is 8.13%[14][16][17] - Model name: Broad-based index heat; Model construction idea: Aggregate the total heat of component stocks in broad-based indices; Model construction process: Group the entire A-share sample according to the component stocks of the CSI 300, CSI 500, CSI 1000, CSI 2000, and "other" groups. Sum the total heat indicators of the component stocks in each group to obtain the heat of the four mainstream broad-based indices and the heat of stocks not included in these indices ("other" group). The formula is: $ \text{Total Heat} = \sum_{i=1}^{n} (\text{Browse Count}_i + \text{Self-selection Count}_i + \text{Click Count}_i) $ where $ n $ is the number of stocks in the group. The heat is normalized by dividing by the total market heat and multiplying by 10000, with a range of [0,10000][9][12] - Factor name: Total heat indicator; Factor construction idea: Aggregate the browsing, self-selection, and click counts of stocks; Factor construction process: Define the total heat indicator as the sum of the browsing, self-selection, and click counts of a stock, normalized by its proportion in the entire market on the same day, and multiplied by 10000. The formula is: $ \text{Total Heat} = \frac{(\text{Browse Count} + \text{Self-selection Count} + \text{Click Count})}{\text{Total Market Heat}} \times 10000 $ with a range of [0,10000][8] - Factor name: Concept heat; Factor construction idea: Aggregate the total heat of component stocks in different concepts; Factor construction process: Calculate the weekly heat change rate of each concept and smooth it using MA2. Construct two simple portfolios: select the top 5 concepts with the highest heat change rate each week, exclude the smallest 20% of stocks by market cap, and equally hold the top 10 stocks with the highest total heat in each concept to form the heat TOP portfolio. Similarly, select the bottom 10 stocks with the lowest total heat in each concept to form the BOTTOM portfolio. The formula is: $ \text{Heat Change Rate MA2} = \frac{\sum_{i=1}^{n} \text{Heat Change Rate}_i}{n} $ where $ n $ is the number of weeks. The BOTTOM portfolio's annualized return is 15.71%, with a maximum drawdown of 28.89%. The return since 2025 is 18.35%[28][30][32][33] Model backtest results - Broad-based index rotation strategy, annualized return 8.74%, maximum drawdown 23.5%, return since 2025 8.13%[17] - Broad-based index heat, CSI 300 heat change rate increased by 5.25%, CSI 500 heat change rate decreased by 13.72%[17] Factor backtest results - Total heat indicator, normalized range [0,10000][8] - Concept heat, BOTTOM portfolio annualized return 15.71%, maximum drawdown 28.89%, return since 2025 18.35%[33]

Group 1 - The titanium dioxide concept sector rose by 2.29%, ranking 10th among concept sectors, with 12 stocks increasing in value, including Anada which hit the daily limit, and Guocheng Mining, Zhenhua Co., and Huiyun Titanium Industry showing gains of 6.19%, 3.46%, and 3.41% respectively [1] - The main capital inflow into the titanium dioxide concept sector was 106 million yuan, with Anada receiving the highest net inflow of 55.23 million yuan, followed by Zhenhua Co., Guocheng Mining, and Jinpu Titanium Industry with net inflows of 36.96 million yuan, 14.95 million yuan, and 8.70 million yuan respectively [2][3] Group 2 - The leading stocks in terms of net capital inflow ratio were Anada, Guocheng Mining, and Zhenhua Co., with net inflow ratios of 11.18%, 8.37%, and 8.13% respectively [3] - The trading performance of key stocks in the titanium dioxide sector included Anada with a daily increase of 10.04% and a turnover rate of 19.49%, while Zhenhua Co. and Guocheng Mining had increases of 3.46% and 6.19% respectively [3][4]

Group 1 - The Hengqin New Area concept index rose by 2.44%, ranking 8th among concept sectors, with 37 stocks increasing in value [1][2] - Notable gainers included Palm Holdings, Zhuhai Port, and *ST Jianyi, which hit the daily limit, while ST Xiangxue, *ST Diwei, and Huajin Capital also saw significant increases of 9.73%, 7.92%, and 5.01% respectively [1][2] - The sector experienced a net inflow of 373 million yuan, with 22 stocks receiving net inflows, and 6 stocks attracting over 30 million yuan each, led by Zhuhai Port with a net inflow of 143 million yuan [2][3] Group 2 - The top stocks by net inflow ratio included *ST Jianyi, Zhuhai Port, and ST Lingnan, with net inflow ratios of 81.21%, 50.47%, and 29.49% respectively [3][4] - The trading volume and turnover rates for key stocks were highlighted, with Zhuhai Port showing a turnover rate of 5.16% and a significant net inflow of 142.76 million yuan [3][4] - Decliners in the sector included Zhuhai Mian Group, Shenguang Group, and Letong Co., which saw declines of 2.85%, 1.30%, and 1.24% respectively [1][5]

暗盘资金一眼洞悉庄家意图>> 钛白粉概念板块短线拉升，安纳达（002136）涨停，惠云钛业（300891）、金浦钛业（000545）、中核 钛白（002145）、国城矿业（000688）、天原股份（002386）等纷纷走高。 ...

Group 1 - The titanium dioxide concept sector rose by 1.62%, ranking third among concept sectors, with 11 stocks increasing in value, including Tianyuan Co., which hit the daily limit, and Zhenhua Co., Kuncai Technology, and Guocheng Mining, which rose by 7.31%, 4.03%, and 3.62% respectively [1] - The main capital inflow into the titanium dioxide concept sector was 144 million yuan, with Zhenhua Co. leading the inflow at 122 million yuan, followed by Tianyuan Co., Kuncai Technology, and Guocheng Mining with inflows of 51.42 million yuan, 21.03 million yuan, and 6.29 million yuan respectively [2][3] - The top three stocks by net capital inflow ratio were Kuncai Technology, Zhenhua Co., and Tianyuan Co., with net inflow ratios of 17.37%, 16.29%, and 9.97% respectively [3] Group 2 - The stocks with the largest declines included Daon Co., Luban Chemical, and Donghua Technology, which fell by 2.97%, 2.80%, and 1.76% respectively [1][4] - The trading volume and turnover rates for the leading stocks in the titanium dioxide sector showed significant activity, with Zhenhua Co. having a turnover rate of 6.65% and Tianyuan Co. at 8.44% [3]