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Costar vs Shenzhen Longsys Electronics Co. Ltd. A: why the prices moved differently

Weekly · monthly · quarterly news summaries, side by side in time

Costar Group Co Ltd (002189.CS)

Shenzhen Longsys Electronics Co. Ltd. A (301308.CS)

Q3 2026
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Longsys Q3: Record Profits, AI Tech, Buyback, HK Listing; Insider Sale Tempers Gains

  • Explosive H1 2026 Earnings Net profit surged over 71,000% to 10.58 billion yuan on 136% revenue growth, driven by soaring DRAM and NAND memory prices. This massive earnings beat reflects strong demand and pricing power.

    This is the primary fundamental driver of the stock's performance during the period.

  • AI Storage Tech and Buyback Longsys advanced AI storage technology with AMD, cutting DRAM use by 40%, and announced a 400–800 million yuan buyback, signaling management confidence in future prospects.

    These developments highlight innovation and shareholder-friendly actions that support the stock.

  • Approved Hong Kong Listing The company received approval for a Hong Kong listing to raise up to $800 million, with cornerstone investors like Lenovo and Transsion, enhancing capital and strategic partnerships.

    This expands funding sources and validates the company's growth story.

  • Insider Selling and Priced-In Gains Deputy General Manager Zhu Yu sold 598,400 shares for about 203 million yuan in late September, and the stock stalled as gains were already priced in, with memory stocks selling off in mid-July.

    This counterweight explains why the stock didn't rise further despite strong earnings.

August 2026
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Longsys profit explodes on memory boom; Hong Kong listing and insider sale follow

  • First-half profit surges over 700-fold on soaring memory prices Longsys reported first-half net profit of 10.58 billion yuan, up 71,528.66% from a year earlier, with revenue up 136% to 24.1 billion yuan. The jump is driven by soaring memory prices, a real business tailwind that supports the stock's value.

    This is the core fundamental force behind the stock and the basis for everything else this period.

  • Hong Kong listing approved, up to $800 million raise planned Longsys passed the Hong Kong exchange hearing and is selling about 26 million H-shares to raise up to $800 million, potentially $1.06 billion. Cornerstone investors like Lenovo and Transsion are taking 18.89%. The money mostly funds research, strengthening the business, though the shares are priced at a 45% discount to the mainland close.

    The H-share listing is a major new capital event that changes the company's funding and profile.

  • Deputy general manager sells 598,400 shares for about 203 million yuan Deputy General Manager Zhu Yu sold 598,400 A-shares at an average 339.63 yuan each between September 22 and 29, raising about 203 million yuan for personal funding needs. Insider selling can signal that a top executive sees limited further upside, a real counterweight to the strong results.

    This is the main negative development of the period and a genuine counterweight to the bullish earnings news.

Latest
▲2▼1

Longsys profit explodes on memory boom; Hong Kong listing and insider sale follow

  • First-half profit surges over 700-fold on soaring memory prices Longsys reported first-half net profit of 10.58 billion yuan, up 71,528.66% from a year earlier, with revenue up 136% to 24.1 billion yuan. The jump is driven by soaring memory prices, a real business tailwind that supports the stock's value.

    This is the core fundamental force behind the stock and the basis for everything else this period.

  • Hong Kong listing approved, up to $800 million raise planned Longsys passed the Hong Kong exchange hearing and is selling about 26 million H-shares to raise up to $800 million, potentially $1.06 billion. Cornerstone investors like Lenovo and Transsion are taking 18.89%. The money mostly funds research, strengthening the business, though the shares are priced at a 45% discount to the mainland close.

    The H-share listing is a major new capital event that changes the company's funding and profile.

  • Deputy general manager sells 598,400 shares for about 203 million yuan Deputy General Manager Zhu Yu sold 598,400 A-shares at an average 339.63 yuan each between September 22 and 29, raising about 203 million yuan for personal funding needs. Insider selling can signal that a top executive sees limited further upside, a real counterweight to the strong results.

    This is the main negative development of the period and a genuine counterweight to the bullish earnings news.

July 2026
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Longsys Profit Surges on Memory Upcycle, but Stock Stalls

  • Explosive Profit Growth First-half net profit jumped over 71,000% to 10.58 billion yuan on 136% revenue growth, powered by rising DRAM and NAND prices and renewed wafer supply deals.

    This is the core fundamental driver of the stock's performance during the period.

  • AI Storage Innovation with AMD New AI storage technology developed with AMD cuts DRAM use by 40%, potentially boosting demand for Longsys products in AI applications.

    Highlights a technological edge that could drive future growth and investor optimism.

  • Buyback Signals Confidence A proposed 400–800 million yuan buyback, backed by a 720 million yuan bank loan, shows management's belief that shares are undervalued.

    Buybacks often support share prices by reducing supply and signaling insider confidence.

  • Good News Priced In, Stock Stalls Despite a 62,200% profit forecast, shares rose only 10% before gains vanished, and memory stocks sold off in mid-July, suggesting huge earnings are already priced in.

    This counterweight explains why strong fundamentals did not lift the stock further, capping upside.

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Longsys profit explodes on memory boom, buyback and AI storage push

  • First-half profit surges 715x on memory super cycle Longsys reported first-half revenue of 24.1 billion yuan, up 136%, and net profit of 10.58 billion yuan, up 71,528%. Record gross margin and a memory supply shortage through 2027 mean earnings power is far above past levels, the core reason the stock is re-rated.

    The blowout earnings are the fundamental force behind the stock and confirm the memory upcycle is flowing into profit.

  • Buyback up to 800 million yuan, bank loan secured The controlling shareholder proposed repurchasing 400-800 million yuan of shares for equity incentives, and China Construction Bank committed a special loan of up to 720 million yuan. Buybacks shrink supply of shares and signal management sees the stock as undervalued.

    A funded buyback is a direct, concrete support for the share price and shows insider confidence.

  • AI storage products shown at FMS 2026 with AMD Longsys displayed end-to-end AI storage: AIDIMM high-bandwidth memory running 122B-parameter models on 64GB, a 5nm controller SSD at 14.8 GB/s, and mobile UFS tech. This positions it in the fast-growing AI hardware market beyond plain memory chips.

    New AI product lines open future growth beyond commodity memory, supporting the longer-term valuation story.

  • Memory stock rout and priced-in expectations cap gains In mid-July memory names including Longsys fell sharply after Demingli's second limit-down and a drop in US chip stocks, and even a 62,200% profit forecast only lifted shares 10% before gains were erased. Investors had already priced in huge earnings, so good news alone may not move the stock.

    This is the main counterweight: the market already expects extreme growth, so the stock can fall even on strong results.

▲4

Longsys Profit Surges on Memory Boom and AI Storage

  • First-half profit forecast up over 62,000% Longsys expects first-half 2026 net profit of 9.2–11 billion yuan, a year-on-year increase of 62,204%–74,394%, driven by strong downstream demand and a global memory upcycle. This massive profit jump directly boosts investor confidence and the stock price.

    This is the core new event that explains the stock's surge.

  • Renewed wafer supply deals secure production Longsys renewed wafer supply agreements with major global memory manufacturers, ensuring it has enough raw materials amid tight industry capacity. This reduces supply risk and supports future revenue growth, pushing the stock up.

    It shows the company can meet demand and sustain growth.

  • AI storage tech cuts DRAM use by 40% Longsys completed joint optimization with AMD for on-device AI, reducing DRAM usage by about 40%. This innovation makes its products more competitive in the fast-growing edge AI market, adding a technology-driven growth story that lifts the stock.

    It highlights a new competitive edge in AI storage.

  • Memory prices keep rising, Samsung hikes DRAM 20% TrendForce expects DRAM contract prices to rise 13–18% and NAND 10–15% in Q3 2026, and Samsung reportedly plans a 20% DRAM price hike. Higher prices mean more revenue and profit for Longsys, driving the stock higher.

    It confirms the industry pricing tailwind that directly benefits Longsys.