美国灰矿建材股价承压，行业并购与政策变动引关注

Group 1 - The industry is experiencing active mergers and acquisitions, with KPS Capital Partners planning to acquire The Wells Companies, a precast concrete firm, expected to complete in Q1 2026, potentially reshaping competition in the segment and indirectly affecting the supply chain for lime and other building materials [1] - The U.S. Environmental Protection Agency (EPA) is considering revoking the 2009 greenhouse gas hazard designation, which could ease regulatory constraints on high-emission sectors like transportation, thereby reducing compliance pressure for building material companies [1] - There has been significant volatility in the OTC building materials sector, with increased turnover and amplitude, indicating that small-cap stocks like gray mineral building materials are susceptible to short-term liquidity risks [1] Group 2 - As of February 11, 2026, the stock price of U.S. gray mineral building materials closed at $107.76, showing a slight increase of 0.22% for the day, but a cumulative decline of 5.69% over the past five days and an 18.16% drop over the last 20 days, underperforming the building materials sector which fell by 3.09% on the same day [1] - The trading volume was $19.19 million, with a volume ratio of 1.51 and a turnover rate of 0.62%, indicating active short-term trading but an overall downward trend [1]