Quantitative Factors and Construction Methods - **Factor Name**: Large Buy Order Transaction Amount Ratio **Factor Construction Idea**: This factor captures the buying behavior of large funds by analyzing the proportion of large buy orders in the total transaction amount for a given day [7] **Factor Construction Process**: 1. Utilize tick-by-tick transaction data to reconstruct buy and sell order data based on the bid and ask sequence numbers [7] 2. Filter transactions based on order size to identify large orders [7] 3. Calculate the proportion of large buy order transaction amounts to the total transaction amount for the day [7] **Formula**: $ \text{Large Buy Order Transaction Amount Ratio} = \frac{\text{Large Buy Order Amount}}{\text{Total Transaction Amount}} $ **Factor Evaluation**: This factor effectively reflects the buying behavior of large funds [7] - **Factor Name**: Net Active Buy Transaction Amount Ratio **Factor Construction Idea**: This factor measures the active buying behavior of investors by analyzing the net active buy transaction amount as a proportion of the total transaction amount for a given day [7] **Factor Construction Process**: 1. Use tick-by-tick transaction data to classify each transaction as either active buy or active sell based on the buy/sell indicator [7] 2. Calculate the net active buy transaction amount by subtracting the active sell amount from the active buy amount [7] 3. Compute the proportion of the net active buy transaction amount to the total transaction amount for the day [7] **Formula**: $ \text{Net Active Buy Transaction Amount Ratio} = \frac{\text{Active Buy Amount} - \text{Active Sell Amount}}{\text{Total Transaction Amount}} $ **Factor Evaluation**: This factor provides insights into the active buying tendencies of investors [7] Factor Backtesting Results - **Large Buy Order Transaction Amount Ratio**: - Top 10 stocks with the highest 5-day average values: 1. Guofa Co., Ltd. (600538.SH): 86.5%, 97.9% time-series percentile [9] 2. Jilin Expressway (601518.SH): 86.3%, 82.3% time-series percentile [9] 3. Chongqing Iron & Steel (601005.SH): 85.8%, 83.1% time-series percentile [9] 4. Zijin Bank (601860.SH): 85.6%, 62.6% time-series percentile [9] 5. Jianyuan Trust (600816.SH): 85.5%, 90.5% time-series percentile [9] - **Net Active Buy Transaction Amount Ratio**: - Top 10 stocks with the highest 5-day average values: 1. Fangda Special Steel (600507.SH): 24.8%, 100.0% time-series percentile [10] 2. Liaogang Co., Ltd. (601880.SH): 18.3%, 95.1% time-series percentile [10] 3. Overseas Chinese Town A (000069.SZ): 17.6%, 99.6% time-series percentile [10] 4. Qixia Construction (600533.SH): 14.6%, 99.2% time-series percentile [10] 5. Wanwei High-Tech (600063.SH): 14.3%, 99.6% time-series percentile [10] Additional Results for Indices, Industries, and ETFs - **Indices**: - Large Buy Order Transaction Amount Ratio (5-day average): - Shanghai Composite Index: 74.2%, 25.1% time-series percentile [12] - CSI 300: 73.1%, 10.7% time-series percentile [12] - Net Active Buy Transaction Amount Ratio (5-day average): - Shanghai Composite Index: -4.3%, 95.5% time-series percentile [12] - CSI 300: -4.5%, 100.0% time-series percentile [12] - **Industries**: - Large Buy Order Transaction Amount Ratio (5-day average): - Steel: 80.6%, 46.9% time-series percentile [13] - Construction: 79.5%, 62.6% time-series percentile [13] - Net Active Buy Transaction Amount Ratio (5-day average): - Steel: 4.0%, 40.7% time-series percentile [13] - Construction: 2.4%, 70.8% time-series percentile [13] - **ETFs**: - Large Buy Order Transaction Amount Ratio (5-day average): - ChinaAMC SSE 50 ETF (510050.SH): 89.3%, 74.1% time-series percentile [15] - GF CSI All-Index IT ETF (159939.SZ): 89.2%, 54.3% time-series percentile [15] - Net Active Buy Transaction Amount Ratio (5-day average): - Huaan SSE STAR Chip ETF (588290.SH): 17.3%, 99.6% time-series percentile [16] - Harvest CSI Battery Theme ETF (562880.SH): 13.9%, 92.2% time-series percentile [16]

Group 1 - The core viewpoint of the article highlights the significant stock price increase of Liaoport Co., Ltd. (02880), which rose over 10%, specifically by 13.33% to HKD 1.02, with a trading volume of HKD 89.1758 million [1] - Liaoport recently announced that Dalian Port has cumulatively increased its holdings of the company's A-shares by 149 million shares, accounting for 0.63% of the total share capital, with an investment amount of RMB 252 million, completing the buyback plan [1] - For the first half of 2025, Liaoport reported impressive financial results, achieving operating revenue of RMB 5.693 billion, a year-on-year increase of 5.93%, and a net profit attributable to shareholders of RMB 956 million, a substantial year-on-year growth of 110.78%, with basic earnings per share of RMB 0.040027 [1] Group 2 - The significant growth in Liaoport's half-year performance is attributed to increased revenues from oil products and container business, higher investment income from joint ventures, and the recovery of long-term receivables leading to a reversal of credit impairment losses [1]

Core Viewpoint - Liaoport Co., Ltd. (601880) has seen a significant stock price increase of over 10%, with a current rise of 13.33% to HKD 1.02, and a trading volume of HKD 89.1758 million, following the announcement of a share buyback and strong half-year financial results [1] Group 1: Share Buyback - Dalian Port has cumulatively increased its holdings in Liaoport's A-shares by 149 million shares, representing 0.63% of the company's total share capital, with a total investment of RMB 252 million, as of September 9, 2025 [1] Group 2: Financial Performance - For the first half of 2025, Liaoport reported a revenue of RMB 5.693 billion, reflecting a year-on-year growth of 5.93% [1] - The net profit attributable to shareholders reached RMB 956 million, marking a substantial year-on-year increase of 110.78% [1] - The basic earnings per share stood at RMB 0.040027, driven by increased revenues from oil and container businesses, higher investment income from joint ventures, and recovery of long-term receivables that reversed credit impairment losses [1]

Group 1 - Dalian is positioned at a latitude that is ideal for the growth of crops and marine life, with a significant marine area and coastline, making it a key city for marine economic development in China [1] - The city has a strong foundation in traditional marine industries such as fishing, shipbuilding, and marine chemicals, but faces challenges in economic scale and innovation compared to advanced regions [2][3] - Dalian's marine economy is projected to reach a total output value of over 450 billion yuan in 2024, indicating a significant step forward in its development [2] Group 2 - Dalian has established itself as a leader in marine aquaculture, with the highest production of sea cucumbers, scallops, and kelp in the country, contributing to its reputation as a "blue granary" [4][3] - The city is focusing on sustainable practices in marine farming, utilizing artificial reefs and seaweed restoration to enhance the ecological environment for aquaculture [4][3] - Dalian's marine biological industry is expanding, with successful trials in cultivating new species such as sea urchins, indicating a diversification of its marine resources [4] Group 3 - Dalian's shipbuilding industry is undergoing transformation, with significant mergers and acquisitions aimed at enhancing competitiveness and diversifying operations [6][7] - The development of domestically produced key components, such as large marine crankshafts, is breaking the reliance on imports and positioning Dalian as a significant player in the global shipbuilding market [7] - The city is leading in the production of advanced marine engines, including methanol dual-fuel engines, which are crucial for the transition to cleaner energy in shipping [8][9] Group 4 - Dalian is actively promoting marine technology innovation, with initiatives to develop high-tech marine industries and enhance the integration of technology in traditional sectors [10][12] - The establishment of the Yinggeshi Science City is a strategic move to foster marine science and technology, supporting the development of marine biomedicine and other high-tech industries [17][36] - The city is focusing on the integration of research, industry, and education to drive innovation in marine technology, with a significant number of research institutions and universities located in Dalian [17] Group 5 - Dalian is committed to ecological protection and sustainable development, implementing measures to restore marine ecosystems and improve water quality [18][23] - The city has taken strong actions against illegal marine activities that threaten ecological balance, demonstrating a commitment to preserving its marine environment [19][20] - Dalian's efforts in ecological restoration are complemented by a growing awareness among citizens about the importance of environmental protection [20][21] Group 6 - The tourism sector in Dalian is experiencing rapid growth, with a focus on enhancing the marine tourism experience and diversifying offerings beyond traditional sightseeing [24][25] - The city is leveraging its natural beauty and cultural heritage to attract tourists, with significant increases in visitor numbers and tourism revenue [24] - Dalian is exploring new tourism models that emphasize experiential and emotional value, aiming to transform the visitor experience from passive observation to active engagement [25]

Core Viewpoint - Liaoport Co., Ltd. has shown a positive stock performance with a year-to-date increase of 3.17% and significant growth in revenue and net profit for the first half of 2025, indicating strong operational performance and investor interest [1][2]. Company Overview - Liaoport Co., Ltd. is located in Dalian Free Trade Zone, established on November 16, 2005, and listed on December 6, 2010. The company specializes in various port-related logistics services, including oil products, container, automobile, bulk cargo, and passenger roll-on/roll-off services [1]. - The main revenue composition of the company is 96.37% from services, 3.06% from other sources, and 0.57% from goods [1]. Financial Performance - For the first half of 2025, Liaoport achieved a revenue of 5.693 billion yuan, representing a year-on-year growth of 5.93%. The net profit attributable to shareholders was 956 million yuan, showing a remarkable increase of 110.78% [2]. - Cumulatively, the company has distributed 5.342 billion yuan in dividends since its A-share listing, with 1.439 billion yuan distributed over the past three years [3]. Stock Market Activity - As of September 12, Liaoport's stock price increased by 2.33%, reaching 1.76 yuan per share, with a trading volume of 229 million yuan and a turnover rate of 0.72%. The total market capitalization stands at 41.486 billion yuan [1]. - The stock has seen a 6.02% increase over the past five trading days, a 9.32% increase over the past 20 days, and a 21.72% increase over the past 60 days [1]. Shareholder Information - As of June 30, 2025, Liaoport had 224,300 shareholders, a decrease of 2.21% from the previous period. The average circulating shares per person remained at 0 [2]. - Among the top ten circulating shareholders, the Southern CSI 500 ETF holds 111 million shares, an increase of 14.946 million shares compared to the previous period [3].

Core Viewpoint - Liaoning Port Co., Ltd. shows mixed performance in financing activities, with a slight increase in stock price but a net outflow in financing, indicating potential investor caution [1][2]. Financing Activities - On September 11, Liaoning Port's stock price increased by 0.58%, with a trading volume of 171 million yuan [1]. - The financing buy-in amount for the day was 18.32 million yuan, while the financing repayment was 23.94 million yuan, resulting in a net financing outflow of 5.62 million yuan [1]. - As of September 11, the total financing and securities lending balance was 224 million yuan, with the current financing balance at 218 million yuan, accounting for 0.69% of the circulating market value, which is below the 10% percentile level over the past year [1]. Securities Lending - On the same day, 46,200 shares were repaid in securities lending, while 1.60 million shares were sold, amounting to 2.76 million yuan based on the closing price [1]. - The remaining securities lending volume was 3.59 million shares, with a balance of 6.17 million yuan, exceeding the 90% percentile level over the past year, indicating a high level of short selling [1]. Company Overview - Liaoning Port Co., Ltd. was established on November 16, 2005, and listed on December 6, 2010, with its main business involving various types of port logistics services [2]. - The company's revenue composition is primarily from services (96.37%), with minor contributions from other sources [2]. - For the first half of 2025, the company reported a revenue of 5.693 billion yuan, a year-on-year increase of 5.93%, and a net profit attributable to shareholders of 956 million yuan, reflecting a significant year-on-year growth of 110.78% [2]. Dividend Distribution - Since its A-share listing, Liaoning Port has distributed a total of 5.342 billion yuan in dividends, with 1.439 billion yuan distributed over the past three years [3]. Institutional Holdings - As of June 30, 2025, the top ten circulating shareholders included the Southern CSI 500 ETF, which held 111 million shares, an increase of 14.946 million shares compared to the previous period [3].

格隆汇9月9日丨辽港股份(601880.SH)公布，截至2025年9月9日，大连港通过集中竞价方式累计增持公 司A股股票1.49亿股，占公司当前总股本的比例为0.63%，增持金额为2.52亿元（不含交易费），已超过 本次增持计划金额区间的下限，本次增持计划实施完毕。 ...

植德律师事务 北京植德律师事务所 关于 营口港务集团有限公司之一致行动人 大连港集团有限公司 增持辽宁港口股份有限公司股份的 法律意见书 植德京(证)字[2025]0042 号 二〇二五年九月 2. 本所及经办律师根据《律师事务所从事证券法律业务管理办法》《律师 事务所证券法律业务执业规则(试行)》等规定及本法律意见书出具目以前已经 发生或者存在的事实,严格履行了法定职责,遵循了勤勉尽责和诚实信用原则, 进行了充分的核查验证,保证本法律意见书认定的事实真实、准确、完整,所发 表的结论性意见合法、准确,不存在虚假记载、误导性陈述或者重大遗漏,并愿 意承担相应的法律责任。 北京市东城区东直门南大街 1 号来福士中心办公楼 12 层 邮编: 100007 12thFloor,RafflesCityBeijingOfficeTower,No.1DongzhimenSouthStreet, DongchengDistrict,Beijing100007P.R.C 电话(Tel) : 010-56500900 传真(Fax) : 010-56500999 www.meritsandtree.com 关于营口港务集团有限公 ...

香港交易及結算所有限公司及香港聯合交易所有限公司對本公告的內 容 概 不 負 責，對 其 準 確 性 或 完 整 性 亦 不 發 表 任 何 聲 明，並 明 確 表 示，概 不對因本公告全部或任何部分內容而產生或因依賴該等內容而引致的 任 何 損 失 承 擔 任 何 責 任。 本公告乃依據香港聯合交易所有限公司證券上市規則第13.10B條 作 出。 承董事會命 遼寧港口股份有限公司 王慧穎 公司秘書 獨 立 非 執 行 董 事： 劉 春 彥、程 超 英 及 陳 維 曦 中國遼寧省大連市 二零二五年九月十日 於 本 公 告 日 期，董 事 會 成 員 是： 執 行 董 事： 李國鋒及魏明暉 非 執 行 董 事： 王 柱、黃 鎮 洲 及 楊 兵 * （ 於 中 華 人 民 共 和 國 註 冊 成 立 之 外 商 投 資 股 份 有 限 公 司 ） （股票代碼：2880） 海外監管公告 * 本公司根據修改前的香港公司條例第XI部（即 已 於 二 零 一 四 年 三 月 三 日 生 效 之 公 司 條 例 第 十 六 部）登 記 為 非 香 港 公 司，英 文 名 稱 為「Liaoning Port Co., Ltd ...

格隆汇9月9日丨辽港股份(601880.SH)公布，截至2025年9月9日，大连港通过集中竞价方式累计增持公 司A股股票1.49亿股，占公司当前总股本的比例为0.63%，增持金额为2.52亿元（不含交易费），已超过 本次增持计划金额区间的下限，本次增持计划实施完毕。 ...