Quantitative Models and Construction Methods 1. Model Name: GAN_GRU - **Model Construction Idea**: The GAN_GRU model combines Generative Adversarial Networks (GAN) for feature generation and Gated Recurrent Unit (GRU) for time-series feature encoding to construct a stock selection factor[4][13][14] - **Model Construction Process**: 1. **GAN Component**: - The generator (G) learns the real data distribution and generates realistic samples from random noise \( z \) (Gaussian or uniform distribution). The generator's loss function is: $$ L_{G} = -\mathbb{E}_{z\sim P_{z}(z)}[\log(D(G(z)))] $$ where \( D(G(z)) \) represents the discriminator's probability of classifying generated data as real[24][25][26] - The discriminator (D) distinguishes real data from generated data. Its loss function is: $$ L_{D} = -\mathbb{E}_{x\sim P_{data}(x)}[\log D(x)] - \mathbb{E}_{z\sim P_{z}(z)}[\log(1-D(G(z)))] $$ where \( D(x) \) is the probability of real data being classified as real, and \( D(G(z)) \) is the probability of generated data being classified as real[27][29][30] - GAN training alternates between optimizing \( G \) and \( D \) until convergence[30] 2. **GRU Component**: - Two GRU layers (GRU(128, 128)) are used to encode time-series features, followed by a Multi-Layer Perceptron (MLP) with layers (256, 64, 64) to predict returns. The final output \( pRet \) is used as the stock selection factor[22] 3. **Feature Input and Processing**: - Input features include 18 price-volume characteristics (e.g., closing price, turnover, etc.) sampled over the past 400 days, with a shape of \( 40 \times 18 \) (40 days of features)[18][19][37] - Features undergo outlier removal, standardization, and cross-sectional normalization[18] 4. **Training Details**: - Training-validation split: 80%-20% - Semi-annual rolling training (June 30 and December 31 each year) - Hyperparameters: batch size equals the number of stocks, Adam optimizer, learning rate \( 1e-4 \), IC loss function, early stopping (10 rounds), max training rounds (50)[18] 5. **Stock Selection**: - Stocks are filtered to exclude ST stocks and those listed for less than six months[18] - **Model Evaluation**: The GAN_GRU model effectively captures price-volume time-series features and demonstrates strong predictive power for stock returns[4][13][22] --- Model Backtesting Results 1. GAN_GRU Model - **IC Mean**: 0.1119*** (2019-2025)[4][41] - **ICIR (non-annualized)**: 0.89[42] - **Turnover Rate**: 0.83X[42] - **Recent IC**: 0.0331*** (December 2025)[4][41] - **1-Year IC Mean**: 0.0669***[4][41] - **Annualized Return**: 37.40%[42] - **Annualized Volatility**: 23.39%[42] - **IR**: 1.60[42] - **Maximum Drawdown**: 27.29%[42] - **Annualized Excess Return**: 22.42%[4][42] --- Quantitative Factors and Construction Methods 1. Factor Name: GAN_GRU Factor - **Factor Construction Idea**: The GAN_GRU factor is derived from the GAN_GRU model, leveraging GAN for price-volume feature generation and GRU for time-series encoding[4][13][14] - **Factor Construction Process**: - The GAN generator processes raw price-volume time-series features (\( Input\_Shape = 40 \times 18 \)) and outputs transformed features with the same shape (\( Input\_Shape = 40 \times 18 \))[37] - The GRU component encodes these features into a predictive factor for stock selection[22] - The factor undergoes industry and market capitalization neutralization and standardization[22] - **Factor Evaluation**: The GAN_GRU factor demonstrates robust performance across various industries and time periods, with significant IC values and excess returns[4][41] --- Factor Backtesting Results 1. GAN_GRU Factor - **IC Mean**: 0.1119*** (2019-2025)[4][41] - **ICIR (non-annualized)**: 0.89[42] - **Turnover Rate**: 0.83X[42] - **Recent IC**: 0.0331*** (December 2025)[4][41] - **1-Year IC Mean**: 0.0669***[4][41] - **Annualized Return**: 37.40%[42] - **Annualized Volatility**: 23.39%[42] - **IR**: 1.60[42] - **Maximum Drawdown**: 27.29%[42] - **Annualized Excess Return**: 22.42%[4][42] 2. Industry-Specific Performance - **Top 5 Industries by Recent IC (October 2025)**: - Social Services: 0.4243*** - Coal: 0.2643*** - Environmental Protection: 0.2262*** - Retail: 0.1888*** - Steel: 0.1812***[4][41][42] - **Top 5 Industries by 1-Year IC Mean**: - Social Services: 0.1303*** - Steel: 0.1154*** - Non-Bank Financials: 0.1157*** - Retail: 0.1067*** - Building Materials: 0.1017***[4][41][42] 3. Industry-Specific Excess Returns - **Top 5 Industries by December 2025 Excess Returns**: - Banking: 4.30% - Real Estate: 3.51% - Environmental Protection: 2.18% - Retail: 1.76% - Machinery: 1.71%[2][45] - **Top 5 Industries by 1-Year Average Excess Returns**: - Banking: 2.12% - Real Estate: 1.93% - Environmental Protection: 1.50% - Retail: 1.46% - Machinery: 1.23%[2][46]

Market Overview - The glass fiber sector experienced a decline of 1.83% on December 29, with Jiuding New Materials leading the drop [1] - The Shanghai Composite Index closed at 3965.28, up 0.04%, while the Shenzhen Component Index closed at 13537.1, down 0.49% [1] Stock Performance - Notable stock performances in the glass fiber sector include: - Honghe Technology: Closed at 38.02, up 1.12%, with a trading volume of 238,900 shares and a transaction value of 898 million [1] - Shandong Glass Fiber: Closed at 7.48, up 0.67%, with a trading volume of 65,300 shares and a transaction value of 48.48 million [1] - Jiuding New Materials: Closed at 11.21, down 9.96%, with a trading volume of 1,544,900 shares and a transaction value of 1.787 billion [2] Capital Flow - The glass fiber sector saw a net outflow of 1.142 billion from institutional investors, while retail investors had a net inflow of 850 million [2] - The capital flow for specific stocks indicates: - Jiuding New Materials had a significant net outflow of 4.216 million from institutional investors [3] - Shandong Glass Fiber experienced a net inflow of 535.81 thousand from institutional investors [3] Summary of Individual Stocks - Key stocks in the glass fiber sector and their respective capital flows include: - Jiuding New Materials: -4.216 million from institutions, -9.96% change [2][3] - Shandong Glass Fiber: +535.81 thousand from institutions, +0.67% change [2][3] - China Jushi: -3.01% change with a transaction value of 898 million [2]

Market Performance - The glass and fiberglass sector increased by 0.24% compared to the previous trading day, with Jiuding New Materials leading the gains [1] - The Shanghai Composite Index closed at 3963.68, up 0.1%, while the Shenzhen Component Index closed at 13603.89, up 0.54% [1] Stock Performance - Jiuding New Materials (002201) closed at 12.45, up 9.98% with a trading volume of 437,000 shares and a transaction value of 544 million [1] - Zais Technology (603601) also rose by 9.98% to close at 13.34, with a trading volume of 4.43 million shares and a transaction value of 5.795 billion [1] - Other notable performers include Sanxia New Materials (600293) up 5.66% and Jinjing Technology (600586) up 2.10% [1] Capital Flow - The glass and fiberglass sector experienced a net outflow of 1.389 billion from institutional investors, while retail investors saw a net inflow of 1.149 billion [2] - The overall capital flow indicates that retail investors are actively buying into the sector despite the institutional outflow [2] Individual Stock Capital Flow - Sanxia New Materials (600293) had a net inflow of 21.0753 million from institutional investors, while retail investors contributed a net inflow of 1.824 million [3] - Jiuding New Materials (002201) saw a net outflow of 17.2338 million from institutional investors but a net inflow of 12.6057 million from retail investors [3] - Other stocks like Yao Pi Glass (618009) and Changhai Co. (300196) faced significant net outflows from both institutional and retail investors [3]

Group 1 - The glass and fiberglass sector increased by 0.17% on December 25, with Jiuding New Materials leading the gains [1] - The Shanghai Composite Index closed at 3959.62, up 0.47%, while the Shenzhen Component Index closed at 13531.41, up 0.33% [1] - Jiuding New Materials saw a closing price of 11.32, with a significant increase of 10.01% and a trading volume of 65,200 shares, amounting to 73.80 million yuan [1] Group 2 - The glass and fiberglass sector experienced a net outflow of 294 million yuan from institutional investors, while retail investors saw a net inflow of 432 million yuan [2] - The trading data indicates that Jiuding New Materials had a net inflow of 30.28 million yuan from institutional investors, representing 41.03% of its trading volume [3] - In contrast, China Jushi experienced a decline of 1.19% in its stock price, closing at 16.59 with a trading volume of 439,900 shares, totaling 73.20 million yuan [2]

Core Viewpoint - The company is establishing a new subsidiary to capitalize on market opportunities in the industrial equipment manufacturing sector, focusing on green transformation and intelligent upgrades [1][2] Group 1: Investment Details - The company announced the establishment of a new subsidiary, Luoyang North Glass High-Temperature Electric Kiln Intelligent Equipment Co., Ltd., with a registered capital of 10 million yuan [1] - The company will contribute 7.5 million yuan, representing 75% of the registered capital, while the employee stockholding platform will contribute 2.5 million yuan, representing 25% [1] Group 2: Strategic Focus - The new subsidiary will focus on the industrial equipment manufacturing sector outside of the construction industry, particularly in ceramics [1] - The subsidiary aims to develop and manufacture high-temperature electric heating intelligent production equipment that converts fossil energy such as natural gas and coal gas into clean electric energy [1] Group 3: Strategic Rationale - The investment aligns with the company's future development strategy, enhancing the synergy of the industrial chain and improving core competitiveness and sustainable development capabilities [2] - The collaboration with the employee stockholding platform is intended to share risks and stimulate employee engagement, promoting stable and sustainable company growth [2]

证券代码：002613 证券简称：北玻股份 公告编号：2025092 洛阳北方玻璃技术股份有限公司 关于注销部分募集资金专户的公告 本公司及董事会全体成员保证信息披露内容的真实、准确和完整，没有虚假记载、误导性陈述或重大 遗漏。 公司第九届董事会第三次会议及 2025 年第一次临时股东会，分别审议通过了《关于调整 部分募集资金用途用于其他募投项目的议案》，批准公司终止使用募集资金投入"高端幕墙玻 璃生产基地建设项目"并将该项目剩余募集资金调整投入"研发中心建设项目"。具体内容详 1 洛阳北方玻璃技术股份有限公司（以下简称"公司"）于近期完成了部分募集资金专用账 户的销户工作，现将相关情况公告如下： 一、募集资金基本情况 经中国证券监督管理委员会《关于同意洛阳北方玻璃技术股份有限公司向特定对象发行股 票注册的批复》（证监许可〔2024〕270 号）批准，公司共计向特定对象发行人民币普通股（A 股）股票 16,339.87 万股，扣除各项发行费用后实际募集资金净额为人民币 49,367.92 万元。 上述募集资金已全部到位，信永中和会计师事务所(特殊普通合伙)对上述募集资金的到位情况 进行了审验，并于 2024 ...

Group 1 - Kangnibei Group plans to transfer up to 5,065,900 shares, representing no more than 2% of the total share capital, to its controlling shareholder, Zhejiang Pharmaceutical Group, through a block trade [1] - Guiguan Network elected Dai Qingsong as the chairman of the fifth board of directors, who will also act as the general manager [2] - Huayin Technology's shareholders plan to transfer a total of 10,725,600 shares, accounting for 3.93% of the total share capital [3] Group 2 - Wireless Media's subsidiary won a bid for an AI-enabled media platform project with a contract amount of 4.8895 million yuan [4] - Chaosheng Electronics plans to invest 1.008 billion yuan in a high-performance HDI circuit board expansion and upgrade project, aiming to increase production capacity by 240,000 square meters annually [5] - Yingfeng Co., Ltd. disclosed a plan to raise no more than 522 million yuan through a private placement for various projects [6] Group 3 - Yongtai Technology's executives plan to collectively increase their holdings by no less than 5 million yuan without a price range [7] - Guangdong Construction's subsidiary's wind power project has successfully connected its first unit to the grid, contributing to a total installed capacity of 5,094.52 MW [8] - *ST Jiaotou was selected as the first candidate for a sewage treatment plant project with an estimated contract value of 128 million yuan [9] Group 4 - Sanhua Intelligent Control expects a net profit of 3.874 billion to 4.649 billion yuan for 2025, representing a year-on-year increase of 25% to 50% [10] - Aolian Electronics is planning a change in control, leading to a temporary suspension of its stock [11] - ST Zhengtong will resume trading on December 24 after lifting risk warnings and changing its stock name [12] Group 5 - China Nonferrous Metal Industry's subsidiary acquired a 99.9004% stake in Raura Company for 106 million USD, which includes a zinc polymetallic mine in Peru [13] - Xusheng Group's actual controller will change to the Guangzhou Municipal Government, with stock resuming trading [14] - Hualian Holdings plans to acquire 100% of Argentum Lithium S.A. for approximately 1.75 billion USD [15] Group 6 - Yichang Technology is planning a change in control, leading to a temporary suspension of its stock [16] - Runyang Technology's controlling shareholder intends to transfer 5% of the company's shares at a price of 30.08 yuan per share [17] - Hongqi Chain's shareholder, Yonghui Supermarket, plans to reduce its holdings by up to 3% [18][19] Group 7 - Jiaojian Co., Ltd.'s actual controller is under criminal investigation, but the company's control has not changed [20][29] - Tianji Technology is facing a lawsuit for alleged collusion in bidding [21] - Yuehai Feed's controlling shareholder plans to reduce its holdings by up to 3% [22][23] Group 8 - Bojie Co., Ltd. plans to distribute a cash dividend of 0.94 yuan per 10 shares for the 2025 interim period [24] - Dongjiang Environmental plans to invest up to 12 million yuan in a capital increase for a technology company [25] - Taiankang's product received a drug registration certificate for a combination treatment for benign prostatic hyperplasia [26] Group 9 - Lingyun Optical plans to invest up to 5 million USD in a cornerstone investment for an IPO [27] - Canar Co., Ltd. intends to acquire 70% of Jiangxi Fenglin for 21 million yuan [28] - Enjie Co., Ltd.'s subsidiary received a government subsidy of 20 million yuan, accounting for 3.6% of the latest audited net profit [34] Group 10 - China Nuclear Construction plans to introduce investors for a total capital increase of 5 billion yuan, maintaining control over its subsidiaries [35] - Xinzhu Co., Ltd. signed a framework cooperation agreement for an integrated energy project in Tibet [36] - Beibo Co., Ltd. plans to establish a holding subsidiary focused on high-temperature industrial equipment [37] Group 11 - Emei Mountain A plans to establish a wholly-owned subsidiary for tea industry integration with an investment of 10 million yuan [38] - Tianpu Co., Ltd. confirmed the results of a tender offer, with a total of 201 shares accepted [39] - *ST Dongtong's stock will be delisted, entering a 15-day delisting period [40] Group 12 - Zhuoran Co., Ltd.'s subsidiary signed a significant order worth 4.033 billion yuan for a project, representing 142.09% of the company's expected revenue for 2024 [41]

Core Viewpoint - The company, Beibo Co., Ltd. (002613), announced plans to establish a joint venture, focusing on the manufacturing of high-temperature industrial equipment for the ceramics and other industrial sectors, indicating a strategic expansion beyond the construction industry [1] Group 1: Joint Venture Details - The new subsidiary, Luoyang Beibo High-Temperature Electric Kiln Intelligent Equipment Co., Ltd., will concentrate on the research, production, and technical support of electric kilns, electric furnaces, electric drying ovens, and electric melting furnaces [1] - The registered capital of the new company is set at 10 million yuan, with Beibo contributing 7.5 million yuan, representing 75% of the capital, while the employee stock ownership platform will contribute 2.5 million yuan, accounting for 25% [1]

Core Viewpoint - The company aims to seize market opportunities in the green transformation and intelligent upgrade of the industrial equipment manufacturing sector by establishing a new subsidiary focused on high-temperature electric kiln technology for the ceramics and industrial equipment manufacturing fields [1] Group 1: Company Strategy - The company plans to jointly invest with the employee stock ownership platform to establish a controlling subsidiary named Luoyang North Glass High-Temperature Electric Kiln Intelligent Equipment Co., Ltd [1] - The new subsidiary will focus on the research, production, and technical support services for high-temperature industrial kilns, electric furnaces, electric ovens, and electric melting furnaces [1] Group 2: Financial Details - The registered capital of the new company is set at 10 million yuan, with the company contributing 7.5 million yuan (75% of the capital) and the employee stock ownership platform contributing 2.5 million yuan (25% of the capital) [1]

Core Viewpoint - The company aims to seize market opportunities in the green transformation and intelligent upgrade of the industrial equipment manufacturing sector by establishing a new subsidiary focused on high-temperature electric kiln technology [1] Group 1: Company Strategy - The company plans to jointly invest with the employee stock ownership platform to establish a new subsidiary named Luoyang North Glass High-Temperature Electric Kiln Intelligent Equipment Co., Ltd [1] - The new subsidiary will focus on the research, production, and technical support services of high-temperature industrial kilns, electric furnaces, electric ovens, and electric melting furnaces for industries outside the construction sector, particularly ceramics [1] Group 2: Financial Details - The registered capital of the new company is set at 10 million yuan, with the company contributing 7.5 million yuan, accounting for 75% of the registered capital, while the employee stock ownership platform will contribute 2.5 million yuan, representing 25% of the registered capital [1]