Market Overview - On December 23, the Shanghai Composite Index rose by 0.07%, the Shenzhen Component Index increased by 0.27%, and the ChiNext Index gained 0.41% [2] - A total of 58 stocks appeared on the "Dragon and Tiger List" due to significant trading activity, with the highest net inflow of funds recorded for Yingweike (002837.SZ) at 842 million yuan [2][4] Stock Performance - Yingweike saw a net buying amount of 842 million yuan, accounting for 11.07% of the total trading volume, and closed up by 10% with a turnover rate of 9.03% [2][4] - The stock with the highest net outflow was Aerospace Machinery (600151.SH), which experienced a net selling of 515 million yuan, representing 12.02% of the total trading volume, and closed down by 9.98% with a turnover rate of 17.86% [2][5] Institutional Activity - Institutions were active in 35 stocks on the Dragon and Tiger List, with a total net buying of 526 million yuan, comprising 15 net buyers and 20 net sellers [5][6] - The stock with the highest institutional net buying was Duofuduo (002407.SZ), which closed up by 10.02% and had a turnover rate of 16.22% [6] Northbound Capital - Northbound funds participated in 25 stocks on the Dragon and Tiger List, with a total net buying of 561 million yuan [11] - The stock with the highest net buying from northbound funds was Guojijin (002046.SZ), with a net inflow of 238 million yuan, accounting for 6.18% of the total trading volume [11] Common Trends - Both institutions and northbound funds jointly net bought stocks such as Guojijin, Hainan Haiyao, Hongda Electronics, and others, while they jointly net sold stocks like Junda Shares, Tianji Shares, and others [15][16]

国机精工今日下跌6.33%，全天换手率16.90%，成交额38.47亿元，振幅15.06%。龙虎榜数据显示，机构 净买入2.00亿元，深股通净买入2.38亿元，营业部席位合计净卖出3.58亿元。 深交所公开信息显示，当日该股因日振幅值达15.06%上榜，机构专用席位净买入2.00亿元，深股通净买 入2.38亿元。 证券时报·数据宝统计显示，上榜的前五大买卖营业部合计成交13.18亿元，其中，买入成交额为6.99亿 元，卖出成交额为6.19亿元，合计净买入7952.90万元。 资金流向方面，今日该股主力资金净流出6.23亿元，其中，特大单净流出4.96亿元，大单资金净流出 1.27亿元。近5日主力资金净流出3.47亿元。 融资融券数据显示，该股最新（12月22日）两融余额为11.03亿元，其中，融资余额为11.03亿元，融券 余额为3.05万元。近5日融资余额合计减少7141.83万元，降幅为6.08%，融券余额合计增加337.00元，增 幅1.12%。（数据宝） 国机精工12月23日交易公开信息 | 买/卖 | 会员营业部名称 | | 买入金额（万元） | 卖出金额（万元） | | --- | --- | - ...

格隆汇12月23日｜国机精工(002046.SZ)今日跌6.33%，换手率16.9%，成交额38.47亿元。龙虎榜数据显示，深股通买入3.55亿元，卖出1.18亿元，净买入2.38 亿元；四家机构买入3.43亿元，卖出1.44亿元，净买入2亿元；游资"量化打板"位列卖三席位，净卖出8953万元。(格隆汇) | | 买入金额最大的前5名 | | | | | --- | --- | --- | --- | --- | | 序号 | | 交易营业部名称 | 买入金额(万) | 占总成交比例 | | 1 | 深股通专用 | 686次 44.31% 2 | 35528.80 | 9.23% | | 2 | easimoney.com 机构专用 | 1567次 41.10% | 10152.57 | 2.64% | | 3 | 机构专用 | 1567次 41.10% | 9476.93 | 2.46% | | 4 | 机构专用 | 1567次 41.10% | 7821.90 | 2.03% | | 5 | 机构专用 | 1567次 41.10% | 6865.15 | 1.78% | | 序号 | 交易营业部名称 | ...

Core Viewpoint - The continuous decline in the number of shareholders for several companies indicates a trend of increasing concentration of shares, with 118 companies experiencing a decrease for more than three consecutive periods, and some like Yihau New Materials seeing a drop for 12 periods [1] Group 1: Shareholder Trends - A total of 513 companies reported their latest shareholder numbers as of December 20, with 118 companies showing a continuous decline in shareholder numbers for over three periods [1] - Yihau New Materials has the lowest shareholder count at 14,402, down 37.94% over 12 periods, while Kute Intelligent has 32,185 shareholders, down 20.89% over 11 periods [1] - Other companies with significant declines include Dalian Heavy Industry and Jinshi Technology, with respective decreases of 11.90% and 13.33% [1] Group 2: Market Performance - Among the companies with declining shareholder numbers, 27 saw their stock prices increase, while 91 experienced declines, with notable gainers including Shibu Testing (up 64.58%), Guoji Precision Engineering (up 45.98%), and Xianglu Tungsten (up 30.68%) [2] - 29 companies outperformed the Shanghai Composite Index, with Shibu Testing, Guoji Precision Engineering, and Xianglu Tungsten achieving relative returns of 65.46%, 48.43%, and 30.96% respectively [2] Group 3: Industry Distribution - The industries with the highest concentration of companies experiencing declining shareholder numbers include basic chemicals (17 companies), machinery and equipment (14 companies), and pharmaceutical biology (12 companies) [2] - The main board has 74 companies with declining shareholder numbers, while the ChiNext board has 44 [2] Group 4: Institutional Interest - In the past month, 17 companies with declining shareholder numbers were investigated by institutions, with Guoji Precision Engineering, Baowu Magnesium, and Shenzhen Huqiang receiving the most attention, with 6, 4, and 2 investigations respectively [2] - The companies with the highest number of institutional participants in their investigations include Yahua Group (61 institutions), Igor (46 institutions), and Sanyuan Biological (32 institutions) [2]

Financial Performance - In the first three quarters of 2025, the company achieved operating revenue of 2.296 billion yuan, an increase of 490 million yuan, representing a year-on-year growth of 27% [2] - The total gross profit reached 797 million yuan, up by 130 million yuan, with a year-on-year increase of 20% [2] - Net profit was 245 million yuan, an increase of 32.65 million yuan, reflecting a year-on-year growth of 15.4% [2] - The attributable net profit to shareholders was 206 million yuan, showing slight growth compared to the same period last year, impacted by a reduction in equity from 100% to 67% in the superhard materials business [2] Strategic Planning - The company aims to enhance its bearing products to support China's commercial aerospace development and expand into high-value products like cross-roller bearings for humanoid robots [2][3] - In the superhard materials sector, the focus is on advancing diamond functional applications, optimizing diamond-copper composite materials, and breaking through large-size optical-grade diamond production [2][3] Diamond Heat Dissipation Business - The diamond industry is divided into structural and functional applications, with functional applications including heat sinks and optical window pieces [3] - The diamond heat dissipation sector is expected to see growth due to high heat dissipation demands driven by AI, transitioning diamond from an optional to a necessary material [3] - The company began generating revenue from heat dissipation and optical windows in 2023, with expectations to exceed 10 million yuan in 2025, primarily in non-civilian sectors [3] MPCVD Product Development - The development plan for MPCVD products includes three phases: 1. Cultivating diamond rough products (mature stage) 2. Developing diamond heat sinks, optical window pieces, and acoustic membranes (starting phase) 3. Long-term planning for semiconductor materials to replace silicon [3] - Cost reduction strategies include utilizing low-cost electricity in the Xinjiang Hami industrial park and advancing technology across the entire supply chain [3]

Group 1 - The superhard materials index increased by 2% during intraday trading [1] - Among the constituent stocks, Sifangda rose over 7% [1] - World gained 4.12%, Huifeng Diamond increased by 3.86%, Guoji Precision Engineering rose by 3.30%, and Huanghe Xuanfeng went up by 3.05% [1]

证券日报网讯12月22日，国机精工（002046）在互动平台回答投资者提问时表示，截至2025年12月19 日，公司股东人数为44088户。 ...

2.公司未发现近期公共传媒报道了可能或已经对公司股票交易 价格产生较大影响的未公开重大信息。 证券代码：002046 证券简称：国机精工 公告编号：2025-068 国机精工集团股份有限公司 关于股票交易异常波动的公告 本公司及董事会全体成员保证信息披露的内容真实、准确、 完整，没有虚假记载、误导性陈述或重大遗漏。 一、股票交易异常波动情况介绍 国机精工集团股份有限公司（以下简称"公司"）股票（证券简 称：国机精工，证券代码：002046）于 2025 年 12 月 18 日、12 月 19 日、12月22日连续三个交易日内日收盘价格涨幅偏离值累计超过20%， 根据《深圳证券交易所交易规则》的有关规定，属于股票交易异常波 动情况。 二、公司关注及核实情况的说明 针对公司股票交易异常波动，公司对有关事项进行了核查，有关 情况说明如下： 1.公司前期披露的信息不存在需要更正、补充之处。 3.近期公司经营情况及内外部经营环境未发生重大变化。 4.经核查，公司及控股股东、实际控制人不存在关于公司的应披 露而未披露的重大事项或处于筹划阶段的重大事项。 5.经核查，公司控股股东、实际控制人在公司股票交易异常波动 期间不存 ...

国机精工公告称，公司股票于2025年12月18日、12月19日、12月22日连续三个交易日内日收盘价格涨幅 偏离值累计超过20%，属于异常波动。经核查，公司前期披露信息无更正补充，未发现公共传媒报道未 公开重大信息，经营及内外部环境未变，公司及控股股东、实控人无应披露未披露重大事项，实控人在 此期间无买卖公司股票行为。公司提醒投资者以指定媒体公告为准，理性投资。 ...

证券之星消息，12月22日国企改革板块较上一交易日上涨0.47%，同大股份领涨。当日上证指数报收于 3917.36，上涨0.69%。深证成指报收于13332.73，上涨1.47%。国企改革板块个股涨跌见下表： | 代码 | 名称 | 收盘价 | 涨跌幅 | 成交量(手) | 成交额(元) | | --- | --- | --- | --- | --- | --- | | 300321 | 同大股份 | 52.97 | 19.90% | 11.01万 | 5.73亿 | | 002523 | 大桥起車 | 4.35 | 10.13% | 53.40万 | 2.28亿 | | 000070 | 特发信息 | 12.94 | 10.03% | 94.72万 | 12.14亿 | | 002320 | 海峡股份 | 12.62 | 10.03% | 67.90万 | 8.43亿 | | 000551 | 创元科技 | 12.53 | 10.01% | 68.53万 | 8.42亿 | | 601888 | 中国中免 | 91.09 | 10.00% | 88.75万 | 78.34亿 | | 002046 | 国机精 ...