两只ETF，涨超4%！

Core Viewpoint - The A-share market experienced a slight decline overall, with the construction materials sector standing out as a significant performer, showing a notable increase in the morning session [1][4]. Group 1: A-share Market Performance - The A-share market saw major indices decline moderately, with the construction materials sector leading the gains, rising over 3% [4]. - Key stocks in the construction materials sector included Keshun Co., which surged by 13.62%, and several others like Wanli Stone and Jiuding New Materials hitting the daily limit [4]. - Other sectors such as defense, oil and petrochemicals also saw gains exceeding 2% [5]. Group 2: ETF Market Highlights - Two Brazil-themed ETFs gained significant attention in the ETF market, both rising over 4% during the session [2][10]. - The strong performance of these ETFs is attributed to the robust performance of the Brazilian stock market, with the IBOVESPA index increasing by over 3% on January 21, 2026, and accumulating a rise of over 6% since the beginning of the year [10]. Group 3: New Stock Listing - A new stock, Guoliang New Materials, debuted in the A-share market, with its price soaring by as much as 219.14% during the morning session before retracting [14][15]. - Guoliang New Materials specializes in high-temperature industrial refractory materials and has established partnerships with several well-known steel companies [15].