Over 1.36 million shares locked in sell orders, semiconductor leader hits daily limit down with single price! Brain-computer interface accelerates into reality, multiple concept stocks have plunged into "deep holes"

The brain-computer interface industry is officially entering the “fast track” from “planning blueprints” to “implementation.”

San’an Optoelectronics Hits Limit Down

On the morning of March 23, the A-share market experienced a heavy decline, with the Shanghai Composite Index falling below the 3,900-point mark, dropping 2.5% in early trading. Nearly 5,000 stocks declined, with themes such as seed industry, pork, chicken, aquatic products, and vitamins leading the declines.

By midday, Mingde Bio, Tiandi Online, Chifeng Gold, San’an Optoelectronics, and Tianshun Shares hit the limit down. Among them, San’an Optoelectronics (600703) opened with a limit-down, with over 1.36 million orders on the sell side.

On the evening of March 22, San’an Optoelectronics announced that on March 21, 2026, it received notice from Fujian San’an Group Co., Ltd. that the company had recently received a notification from the National Supervision Commission regarding the actual controller, Lin Xiucheng, being detained and under investigation. Since July 10, 2017, Lin Xiucheng has not held any position in the company. Currently, the company’s production and operations are normal.

San’an Optoelectronics is a leading enterprise in China’s compound semiconductor field, mainly engaged in LED epitaxial chips, RF front-end, power electronics, and optical technology integrated circuits.

The company’s earnings forecast shows an expected net loss of 200 million to 300 million yuan in 2025. During the reporting period, the proportion of high-end LED products further increased, and revenue and profitability of the integrated circuit business improved year-on-year, but filters and silicon carbide businesses still significantly drag on profits; government subsidies received decreased year-on-year; R&D expenses increased; and sales of precious metal waste at provisional prices, adjusted according to the Shanghai Gold Exchange, led to reduced investment income.

Accelerating into Reality: Brain-Computer Interfaces

According to the National Healthcare Security Administration on March 22, the world’s first invasive brain-computer interface medical device was officially approved for market on March 13. On March 15, the administration proactively coordinated and provided services to assign a medical insurance code for this product, successfully bridging the critical gap from approval to clinical application, marking that the brain-computer interface industry is moving from “blueprint planning” into the “fast lane” of implementation.

This year, brain-computer interfaces were included in the government work report. The “14th Five-Year Plan” explicitly emphasizes forward-looking layout of future industries, with brain-computer interfaces as a new economic growth point to be prioritized. Under favorable policies, the technology is accelerating out of the laboratory.

Based on technical approaches, brain-computer interfaces are mainly divided into invasive and non-invasive types. Invasive interfaces involve surgically implanting electrodes into the brain to directly record neural activity; non-invasive interfaces collect brain signals via scalp electrodes without surgery.

Whether invasive or non-invasive, brain-computer interfaces have demonstrated clear application value in rehabilitation for movement disorders, diagnosis and treatment of neurological and mental illnesses, hearing rehabilitation, and other health fields, with broad prospects.

On March 22, the China Development Forum 2026 Annual Conference opened. Han Bicheng, founder and CEO of Strong Brain Technology, said in an interview that breakthroughs in brain-computer interfaces are expected soon in four major areas: helping elderly regain walking ability, solving blindness for visually impaired groups, enabling early intervention for Alzheimer’s disease, and addressing insomnia from a neural perspective. In the longer term, the potential of brain-computer interfaces far exceeds medical and rehabilitation applications.

According to McKinsey, the potential global market size for brain-computer interface medical applications could reach $40 billion by 2030 and $145 billion by 2040. China’s China Academy of Information and Communications Technology estimates that the industry could grow to between 10 billion and 14 billion yuan by 2030.

Overall Decline of Concept Stocks

Currently, nearly 30 stocks related to brain-computer interface are listed in the A-share market. According to data from Securities Times and Data Treasure, as of March 20, the total market value of these concept stocks was 505.17 billion yuan. Since the beginning of the year, these stocks have experienced a significant decline, with an average retracement of 26.44% compared to their peak prices earlier this year. Higer Communications, Prite, Xiangyu Medical, Hanwei Technology, and Botuo Biotech saw the largest declines.

Higer Communications declined by 44.03%. The company is working on non-invasive brain-computer interface technology, aiming to realize civilian and specialized applications in perception control and related scenarios. It expects a net loss of 700 million to 790 million yuan in 2025.

Prite declined by 41.43%. Its LCP film products are suitable for flexible electrodes in brain-computer interfaces. The company is actively engaging with overseas clients for verification.

Xiangyu Medical declined by 40.23%. With its self-developed and comprehensive rehabilitation equipment system, the company can quickly integrate “brain-computer interface technology + proprietary rehabilitation devices” to provide comprehensive solutions powered by brain-computer interfaces. Its products are already in over 600 top-tier hospitals.

Since the start of the year, 12 brain-computer interface concept stocks have received institutional research. Among them, five stocks—Xiangyu Medical, Aipeng Medical, EntoTech, Botuo Biotech, and Sanqi Interactive Entertainment—have been surveyed by over 100 institutions each.

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

Proofreading: Gao Yuan