重要内容提示： 甘肃酒钢集团宏兴钢铁股份有限公司 关于召开 2025 年半年度业绩说明会的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述或者 重大遗漏，并对其内容的真实性、准确性和完整性承担个别及连带责任。 http://roadshow.sseinfo.com/） 会议召开方式：上证路演中心网络互动 投资者可于 2025 年 10 月 22 日(星期三)16:00 前登录上证路演中心网站首页 点击"提问预征集"栏目或通过公司邮箱 irjg@jiugang.com 进行提问，公司将在说 明会上对投资者普遍关注的问题给予答复。 一、 业绩说明会类型 甘肃酒钢集团宏兴钢铁股份有限公司（以下简称"公司"）已于 2025 年 8 月 27 日披露了公司 2025 年半年度报告，为便于广大投资者更加全面深入地了解公司经营 成果、财务状况，公司拟定于 2025 年 10 月 23 日上午 10:00-11:00 召开 2025 年半年 度业绩说明会。 本次业绩说明会以网络互动形式召开，主要针对 2025 年半年度的经营成果及财 务指标的具体情况与投资者进行互动、沟通，在信息披露允许的范围内就投资 ...

甘肃酒钢集团宏兴钢铁股份有限公司（以下简称"公司"）董事会收到公司副董 事长、总经理杜昕先生递交的辞职报告，杜昕先生因职务调整申请辞去公司总经理职 务。根据《公司章程》及相关规定，杜昕先生的辞职报告自送达董事会之日起生效， 辞职后杜昕先生仍担任公司副董事长职务。 公司及董事会对杜昕先生在担任总经理期间为公司发展做出的贡献表示衷心的 感谢！ 截止本公告日，杜昕先生不持有与公司相关的股票及其他有价证券。 特此公告 甘肃酒钢集团宏兴钢铁股份有限公司董事会 2025 年 10 月 14 日 证券代码：600307 证券简称：酒钢宏兴 公告编号：2025-060 甘肃酒钢集团宏兴钢铁股份有限公司 关于总经理辞职的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述或者 重大遗漏，并对其内容的真实性、准确性和完整性承担个别及连带责任。 ...

格隆汇10月13日丨酒钢宏兴(600307.SH)公布，公司董事会收到公司副董事长、总经理杜昕先生递交的 辞职报告，杜昕先生因职务调整申请辞去公司总经理职务。根据《公司章程》及相关规定，杜昕先生的 辞职报告自送达董事会之日起生效，辞职后杜昕先生仍担任公司副董事长职务。截止本公告日，杜昕先 生不持有与公司相关的股票及其他有价证券。 ...

Core Viewpoint - The company announced the resignation of its General Manager, Du Xin, due to job adjustments, while he will continue to serve as the Vice Chairman [1] Group 1 - Du Xin submitted his resignation report to the board of directors on October 13 [1] - The resignation is effective immediately upon delivery to the board, according to the company's articles of association and relevant regulations [1] - Du Xin will retain his position as Vice Chairman after resigning as General Manager [1]

Core Viewpoint - The company announced the resignation of its Vice Chairman and General Manager, Du Xin, due to a job adjustment, while he will continue to serve as Vice Chairman without holding any company stocks or securities [1] Group 1 - Du Xin has submitted his resignation report, which has been approved by the company [1] - The company's board expressed gratitude for Du Xin's contributions during his tenure [1]

Market Overview - On October 10, the general steel sector rose by 1.09%, led by Wujin Stainless Steel, while the Shanghai Composite Index closed at 3897.03, down 0.94% [1] - The Shenzhen Component Index closed at 13355.42, down 2.7% [1] Individual Stock Performance - Wujin Stainless Steel (603878) closed at 10.81, up 9.97% with a trading volume of 594,000 shares and a turnover of 617 million yuan [1] - Nanjing Steel (600282) closed at 5.38, up 4.06% with a trading volume of 608,600 shares and a turnover of 322 million yuan [1] - Other notable performers include: - Sansteel Minguang (002110) at 4.39, up 4.03% [1] - Shandong Steel (600022) at 1.63, up 3.82% [1] - Shougang Group (000959) at 4.39, up 2.57% [1] Capital Flow Analysis - The steel sector experienced a net outflow of 767 million yuan from institutional investors, while retail investors saw a net inflow of 582 million yuan [2] - Notable capital flows include: - Wujin Stainless Steel had a net outflow of 38.74 million yuan from institutional investors [3] - Liugang (601003) saw a net inflow of 20.04 million yuan from institutional investors [3] - New Steel (600782) had a net inflow of 15.20 million yuan from institutional investors [3]

Content: --------- <doc id='1'>大额买入与资金流向跟踪（20250922-20250926） [Table_Authors] 郑雅斌(分析师) 本报告导读： 参考团队前期发布的专题报告选股因子系列研究（五十六、五十七），本报告旨在通 过交易明细数据构建相关指标，跟踪大额买入和净主动买入。</doc> <doc id='2'>投资要点：</doc> <doc id='3'>| | 021-23219395 | | --- | --- | | | zhengyabin@gtht.com | | 登记编号 | S0880525040105 | | | 张耿宇(分析师) | | | 021-23183109 | | | zhanggengyu@gtht.com | | 登记编号 | S0880525040078 |</doc> <doc id='4'>[Table_Report] 相关报告 量化择时和拥挤度预警周报（20250928） 2025.09.28 高频选股因子周报（20250922-20250926） 2025.09.28 低频选股因子周报（2025.09.19-2025.09.26） 2025.09.27 国内权益资产震荡，资产配置策略整体回调 2025.09.26 绝对收益产品及策略周报（250915-250919） 2025.09.24 金 融 工 程 金 融 工 程 周 报 金融工程 /[Table_Date] 2025.09.30 [Table_Summary] 个股大额买入跟踪与净主动买入跟踪。近 5 个交易日大额买入排名 前 5 的个股为：华泰股份、美凯龙、联美控股、启迪环境、酒钢宏 兴；近 5 个交易日净主动买入排名前 5 的个股为：鄂尔多斯、中信 特钢、桂冠电力、南钢股份、京泉华。（本周报中，近 5 个交易日特 指 20250922 至 20250926。） 行业大额买入与净主动买入跟踪。近 5 个交易日大额买入排名前 5 的中信一级行业为：银行、石油石化、非银行金融、钢铁、房地产； 近 5 个交易日净主动买入排名前 5 的中信一级行业为：银行、石油 石化、农林牧渔、房地产、电力及公用事业。 ETF 大额买入跟踪与 ETF 净主动买入跟踪。近 5 个交易日大额买 入排名前 5 的 ETF 为：嘉实中证 500ETF、南方标普中国 A 股大盘 红利低波 50ETF、易方达中证红利 ETF、嘉实中证稀土产业 ETF、 易方达沪深 300ETF；近 5 个交易日净主动买入排名前 5 的 ETF 为： 富国创业板 ETF、嘉实中证新能源 ETF、华夏中证内地低碳经济主 题 ETF、广发创业板 ETF、鹏华中证国防 ETF。 风险提示。因子失效风险，模型误设风险，市场系统性风险。</doc> <doc id='6'>| 1. | 跟踪指标计算说明 3 | | --- | --- | | 2. | 个股大额买入与资金流向跟踪 3 | | 3. | 宽基指数大额买入与资金流向跟踪 3 | | 4. | 行业大额买入与资金流向跟踪 4 | | 5. | ETF 大额买入与资金流向跟踪 5 | | 6. | 风险提示 5 |</doc> <doc id='7'>1. 跟踪指标计算说明 本文使用大买单成交金额占比和净主动买入金额占比，跟踪个股、宽 基指数、行业和 ETF 的大额买入与资金流向。 大买单成交金额占比刻画了大资金的买入行为。根据逐笔成交数据中 的叫买和叫卖序号，可将逐笔成交数据还原为买卖单数据，并按照每单的 成交量筛选得到大单，计算其中大买单的成交金额占当日总成交金额的比 例。 净主动买入金额占比刻画了投资者的主动买入行为。根据逐笔成交数 据中的买卖标志，可界定每笔成交属于主动买入还是主动卖出。将两者的 成交金额相减，可得净主动买入金额，并计算占当日总成交金额的比例。</doc> <doc id='8'>2. 个股大额买入与资金流向跟踪 下表为全市场大买单成交金额占比过去 5 日均值排名前 10 的股票。</doc> <doc id='9'>| | 表 1 大买单成交金额占比前 10 股票列表（20250922-20250926） | | | | | --- | --- | --- | --- | --- | | 排序 | WIND 代码 | 股票名称 | 指标值 | 时序分位数 | | 1 | 600308.SH | 华泰股份 | 89.1% | 100.0% | | 2 | 601828.SH | 美凯龙 | 88.9% | 99.2% | | 3 | 600167.SH | 联美控股 | 88.7% | 98.8% | | 4 | 000826.SZ | 启迪环境 | 88.6% | 99.6% | | 5 | 600307.SH | 酒钢宏兴 | 87.9% | 95.9% | | 6 | 601996.SH | 丰林集团 | 87.7% | 98.0% | | 7 | 601366.SH | 利群股份 | 87.7% | 99.2% | | 8 | 002453.SZ | 华软科技 | 87.7% | 99.6% | | 9 | 600935.SH | 华塑股份 | 87.5% | 97.6% | | 10 | 600606.SH | 绿地控股 | 87.3% | 99.2% | 资料来源: Wind，国泰海通证券研究 下表为部分全市场净主动买入金额占比过去 5 日均值排名前 10 的股票。</doc> <doc id='10'>| | 表 2 净主动买入金额占比前 10 股票列表（20250922-20250926） | | | | | --- | --- | --- | --- | --- | | 排序 | WIND 代码 | 股票名称 | 指标值 | 时序分位数 | | 1 | 600295.SH | 鄂尔多斯 | 17.9% | 98.4% | | 2 | 000708.SZ | 中信特钢 | 17.4% | 100.0% | | 3 | 600236.SH | 桂冠电力 | 15.2% | 98.4% | | 4 | 600282.SH | 南钢股份 | 12.7% | 95.1% | | 5 | 002885.SZ | 京泉华 | 11.6% | 100.0% | | 6 | 600323.SH | 瀚蓝环境 | 11.5% | 95.1% | | 7 | 600176.SH | 中国巨石 | 11.5% | 99.2% | | 9 | 603037.SH | 凯众股份 | 11.0% | 100.0% | | 10 | 603091.SH | 众鑫股份 | 10.9% | 99.2% | 资料来源: Wind，国泰海通证券研究</doc> <doc id='11'>3. 宽基指数大额买入与资金流向跟踪 本文使用整体法计算主要宽基指数的大买单成交金额占比和净主动买 入金额占比，列于下表。</doc> <doc id='12'>表 3 宽基指数大额买入与资金流向（20250922-20250926） | | | 大买单成交金额占比 | | 净主动买入金额占比 | | --- | --- | --- | --- | --- | | | 5 日均值 | 5 日均值分位数 | 5 日均值 | 5 日均值分位数 | | 上证指数 | 72.3% | 2.9% | -3.6% | 21.6% | | 上证 50 | 70.2% | 7.3% | 1.1% | 18.4%

Core Insights - As of September 29, a total of 100 stocks in the Shanghai and Shenzhen markets have experienced net buying from major funds for five consecutive days or more [1] - The stock with the longest streak of net buying is Guangming Meat Industry, which has seen net buying for 15 consecutive trading days [1] - Other notable stocks with significant net buying days include Shapais, Zhongnan Media, Xintian Green Energy, Xinhua Wenshu, Jiugang Hongxing, Liqun Co., Meikailong, and Fucheng Co. [1]

Group 1 - The core viewpoint of the article highlights the growth in China's cold-rolled sheet production, with a reported output of 4.11 million tons in May 2025, representing a year-on-year increase of 5.2% [1] - Cumulative production from January to May 2025 reached 20.057 million tons, showing a cumulative growth of 6.9% [1] - The data is sourced from the National Bureau of Statistics and compiled by Zhiyan Consulting, indicating a robust trend in the cold-rolled sheet industry [1] Group 2 - The article mentions several listed companies in the cold-rolled sheet sector, including Baosteel Co., Ltd. (600019), Maanshan Iron & Steel Co., Ltd. (600808), and Shougang Group Co., Ltd. (000959) among others [1] - Zhiyan Consulting is recognized as a leading industry consulting firm in China, providing comprehensive industry research reports and customized services [1]

Company Overview - Gansu Jiugang Group Hongxing Steel Co., Ltd. is located in Gansu Province, established on April 21, 1999, and listed on December 20, 2000. The company primarily engages in the production and sales of steel and iron smelting and its rolling products, with main products including high-speed wire rods, bars, medium and heavy plates, and some continuous casting billets [2]. Business Performance - For the first half of 2025, the company achieved operating revenue of 15.595 billion yuan, a year-on-year decrease of 10.96%. The net profit attributable to the parent company was -649 million yuan, representing a year-on-year increase of 33.04% [2]. - The company's main business revenue composition includes: bars 31.86%, coils 26.12%, stainless steel 14.22%, wire rods 11.69%, plates 6.28%, and others 10.83% [2]. Stock Performance - On September 19, the stock price of Jiugang Hongxing fell by 2.29%, trading at 1.71 yuan per share, with a total market capitalization of 10.71 billion yuan. The stock has increased by 7.55% year-to-date, with a recent decline of 0.58% over the last five trading days [1]. - The stock has appeared on the "Dragon and Tiger List" twice this year, with the most recent appearance on July 24, where it recorded a net buy of -639.037 million yuan [1]. Shareholder Information - As of June 30, 2025, the number of shareholders was 185,300, a decrease of 2.75% from the previous period. The average circulating shares per person increased by 2.83% to 33,798 shares [2]. - The top ten circulating shareholders include Hong Kong Central Clearing Limited as the second-largest shareholder, holding 36.1434 million shares, an increase of 8.8648 million shares from the previous period [3].