本周热度变化最大行业为石油石化、食品饮料：市场情绪监控周报（20260202-20260206）-20260208

• The report constructs a "total heat" indicator by aggregating the browsing, self-selection, and click counts of individual stocks, normalized as a percentage of the total market on the same day, and then multiplied by 10,000, with a value range of [0,10000][7] - The "total heat" indicator is used as a proxy for "sentiment heat" to track the attention levels of broad-based indices, industries, and concepts[7] - The broad-based indices are divided into groups: CSI 300, CSI 500, CSI 1000, CSI 2000, and "others," with the total heat indicators of the constituent stocks summed up to obtain the heat of these indices[8] - A simple rotation strategy is constructed based on the weekly heat change rate, buying the broad-based index with the highest heat change rate MA2 at the end of each week, and staying out of the market if the "others" group has the highest change rate[12] - The rotation strategy based on the broad-based heat change rate MA2 has an annualized return of 8.74% since 2017, with a maximum drawdown of 23.5%, and a return of 5.2% in 2026[15] - The weekly heat change rate MA2 for the main broad-based indices shows that the CSI 300 had the highest increase of 3.34% compared to the previous week, while the CSI 500 had the largest decrease of 5.98%[15] - The heat change rate MA2 for the Shenwan first-level industries shows that the oil and petrochemical industry had the highest increase of 58.0% compared to the previous week, while the electronics industry had the largest decrease of -14.1%[26] - The heat change rate MA2 for the Shenwan second-level industries shows that the top five industries with the highest positive change rates are jewelry, planting, liquor II, lighting equipment II, and oil service engineering[26] - The heat change rate for concepts shows that the top five concepts with the highest positive change rates are Huawei Digital Energy, horse racing concept, duty-free shops, Huawei Euler, and pumped storage[27] - Two simple portfolios are constructed: one selects the top 10 stocks with the highest total heat from the top five concepts with the highest heat change rates each week, and the other selects the bottom 10 stocks with the lowest total heat from the same concepts[30] - The historical performance of the portfolios shows that the bottom group can achieve an annualized return of 15.71% with a maximum drawdown of 28.89%[32]