Main Capital丨CPO Concept Stocks Receive Significant Buying Surge

The main funds in the communication, electronics, non-ferrous metals, and machinery equipment industries are among the top in net inflows.

On March 25, the three major A-share indices all rose collectively. By the close, the Shanghai Composite Index increased by 1.3%, closing at 3,931.84 points; the Shenzhen Component Index rose by 1.95%, closing at 13,801 points; and the ChiNext Index gained 2.01%, closing at 3,316.97 points.

Almost all industry sectors advanced, with the power, communication equipment, rare earth, communication services, precious metals, hotel and catering, energy metals, tourism scenic spots, and aviation airports sectors leading the gains. Only the photovoltaic equipment sector declined slightly against the trend.

From today’s main fund flow data, the net inflow of main funds in the Shanghai and Shenzhen markets was 15.032 billion yuan throughout the day. Thirteen industry sectors experienced net inflows, with communication, electronics, non-ferrous metals, and machinery equipment sectors receiving 7.075 billion yuan, 6.362 billion yuan, 5.672 billion yuan, and 1.466 billion yuan respectively. The agriculture, forestry, animal husbandry, fishery, building materials, computer, and household appliances sectors each saw net inflows exceeding 500 million yuan.

Among the 18 sectors with net outflows, utilities led with a net outflow of 1.78 billion yuan; coal, non-bank financials, and basic chemicals each experienced net outflows exceeding 600 million yuan.

Multiple CPO Concept Stocks Attract Main Funds

Looking at individual stocks, 48 stocks saw net inflows from main funds exceeding 200 million yuan, with 10 stocks exceeding 500 million yuan.

Lixun Precision, Zhongji Xuchuang, and Tianfu Communication ranked top in net inflows, all being related to the CPO (Chiplet Package Optics) concept.

On the news front, the Shenzhen Municipal Bureau of Industry and Information Technology recently issued the “Action Plan for Accelerating the High-Quality Development of the Artificial Intelligence Server Industry Chain (2026–2028).” It emphasizes promoting optical modules from 800G to 1.6T/3.2T generations, supporting mass production projects of 800G and above optical modules. Additionally, it focuses on developing high-speed, low-power silicon photonic modules, CPO/LPO/NPO packaging optical modules, and breaking through core technologies such as high-end thin-film lithium niobate and high-end indium phosphide for large-scale applications. The plan also aims to advance all-optical switching technology and industrialization, enhancing independent R&D capabilities for core materials, optical chips, and optical devices.

Lixun Precision led with a net inflow of 3.005 billion yuan. According to the daily trading list, the top brokerage firm executed transactions totaling 4.503 billion yuan throughout the day, with a net purchase of 1.069 billion yuan. Specifically, institutional investors net sold 311 million yuan; meanwhile, Guotai Haitong Securities Shanghai Pudong New Area Haiyang West Road branch, Guotai Haitong Securities Nanjing Taiping South Road branch, and Guotai Haitong Securities Zhanjiang Marriott branch bought 803 million yuan, 409 million yuan, and 298 million yuan respectively.

According to data from Data Treasure, 25 stocks experienced net outflows from main funds exceeding 200 million yuan, with leading outflows from Zhongli Group, Ying Tang Zhikong, Jinkai New Energy, Shunhao Shares, GCL System Integration, Hanlan Shares, and BYD.

Stocks with Main Funds Entering at the Close

Data from Data Treasure shows that the net inflow of main funds in the Shanghai and Shenzhen markets at the close was 697 million yuan. The power equipment, non-ferrous metals, and defense military industry sectors each saw net inflows exceeding 200 million yuan; computer, agriculture, forestry, animal husbandry, fishery, machinery, and biomedicine sectors each had net inflows exceeding 100 million yuan.

In individual stocks, Pingtan Development, Jinlang Technology, and N Hongming saw significant net inflows from main funds, each exceeding 100 million yuan.

N Hongming is a newly listed stock today, with an increase of 84.68%. The company mainly engages in the research, production, and sales of new electronic components based on resistor-capacitor devices, dedicated to providing high-performance, high-reliability electronic components to customers.

On the downside, at the close, main funds withdrew from Shunhao Shares, Yunnan Energy Investment, BYD, Ying Tang Zhikong, and Xinyi Sheng, each exceeding 100 million yuan.

Disclaimer: Data Treasure’s information does not constitute investment advice. The stock market involves risks; please invest cautiously.

Proofreader: Lv Jiubiao