3-Day Surge of 60%, New Historic High! Who's Pumping "China's Leading Mobile Storage Stock" Longsys Electronics?

On March 18, Langke Technology (300042.SZ) continued its strong performance, hitting two consecutive daily limit-ups over three days, and ultimately closing at 61.08 yuan per share, setting a new high since its listing. Its total market capitalization reached 12.2 billion yuan.

According to Wind data, from March 16 to 18, Langke Technology’s stock price increased by a total of 60.74% over three trading days.

Langke Technology mainly operates in SSD solid-state drives, DRAM memory modules, embedded storage, mobile storage, and other storage products, as well as consumer electronics such as wearable devices and computer peripherals. Storage products are primarily used for data storage and system memory buffering, with downstream applications spanning mobile phones, tablets, computers, dashcams, cameras, drones, automotive electronics, smart home devices, and wearables.

Its official website states that Langke Technology was successfully listed on the ChiNext Board of the A-share market in January 2010, known as “China’s No. 1 Mobile Storage Stock.”

In recent news, the National Development and Reform Commission’s Price Monitoring Center stated, “Currently, storage chips are in an upward cycle. Driven by the continuous growth in AI server computing power demand this year, the global storage chip market remains in a supply shortage, and prices are expected to continue rising. The increase in storage chip prices is gradually passing through to consumer electronic end products.”

Additionally, according to Cailian Press, SK Group Chairman Choi Tae-won recently said at NVIDIA GTC that due to systemic bottlenecks in chip production, the global memory chip shortage could persist until 2030, with prices for DRAM, NAND, HBM, and other storage chips continuing to rise, potentially for an extended period.

Affected by this news, the storage chip concept sector rebounded strongly this week, with related storage stocks experiencing an upward trend.

Zhang Xiaorong, Director of the Deep Technology Research Institute, told Times Finance that the positive market response reflects optimism about the long-term demand for storage, technological upgrades, and the process of domestic substitution, which are all expected to warrant a growth premium. Major international manufacturers are shifting capacity toward high-end HBM products, leading to tight industry supply and significant price increases. Although A-share companies do not produce the most advanced wafers, the market share has been ceded by international giants, creating supply-demand tension. These companies benefit significantly through inventory revaluation, product price hikes, and increased packaging and testing services in the industry chain.

Regarding the sharp rise in stock price, Langke Technology announced after the market close on March 17 that there were no errors or omissions in previously disclosed information. The company’s recent operational conditions and internal and external environment have not changed significantly; no major undisclosed information that could impact the stock trading price has been reported by public media.

On January 21, Langke Technology disclosed its 2025 annual performance forecast, expecting net profit attributable to shareholders of 21 million to 31 million yuan, turning profitable from a loss year-over-year.

In response, Langke Technology stated in its earnings forecast that “as global AI server markets increase demand for storage products, storage chip manufacturers are shifting capacity toward high-performance server storage, causing supply-demand imbalance. Since Q2 2025, storage prices have surged significantly. The company has made timely inventory preparations based on market conditions. As storage prices rise, sales revenue and gross profit margin are gradually increasing, and operational performance is improving.”

Notably, on January 21, Langke Technology also announced the termination of a patent licensing agreement. The announcement states that, after written confirmation with KTCUA and KDIL, the original licensing agreement, along with subsequent supplementary agreements, patent transfer, and succession agreements, will expire and terminate on January 21, 2026. This expiration will not impact the company’s 2025 performance but is expected to reduce future patent operation income.

On January 28, Langke Technology stated on its investor relations platform that “in 2024, the company’s patent operation business revenue was 5.0613 million yuan, accounting for about 0.61% of total revenue; in the first half of 2025, patent operation revenue was 2.6139 million yuan, accounting for about 0.55%. The company values the historic opportunity in the storage industry and will continue to focus on its core storage business, emphasizing R&D investment, expanding multiple channels, and improving industry layout.”

Furthermore, Langke Technology’s continued strength is also driven by strong capital support.

Wind data shows that by the close on March 18, Langke Technology had appeared on the龙虎榜 (Top List) three times over the past three trading days. The most active trading departments were institutions, Shenzhen Stock Connect, and Huaxin Securities Shaoxing Shengli East Road Securities, with 3, 3, and 2 appearances respectively.

On March 16, amid a general decline in the A-share market, some storage chip concept stocks rose against the trend. Langke Technology hit the daily limit-up (“20cm”) and topped the龙虎榜; the listed trading departments bought a net total of 58.81 million yuan that day, with institutions net buying 48 million yuan.

On March 17, Langke Technology continued to rise by 11.62%, with a daily turnover rate of 27.99%. Data from the龙虎榜 shows that from March 16 to 17, the listed departments had a combined net purchase of 203 million yuan.

Specifically, institutions net bought 231 million yuan; Shenzhen Stock Connect bought 360 million yuan and sold 383 million yuan; Huaxin Securities Shaoxing Shengli East Road Securities bought 3.533 million yuan and sold 3.934 million yuan, demonstrating quick in-and-out trading.

Image source: Wind

On March 18, Langke Technology again hit the daily limit-up (“20cm”), with a turnover rate of 25.49%. The龙虎榜 shows that the listed departments net sold 204 million yuan that day. Specifically, institutions net sold 173 million yuan; Shenzhen Stock Connect and Kaiyuan Securities Xi’an Taihua Road Securities bought 166 million yuan and 7.0746 million yuan respectively; Shenzhen Stock Connect and Kaiyuan Securities Xi’an Taihua Road Securities sold 267 million yuan and 54,400 yuan respectively.

Image source: Wind

Regarding Langke Technology’s recent stock price movements and first-quarter earnings forecast, Times Finance sent interview questions to Langke Technology on March 18. As of press time, no response has been received.