Analysis of Longsoon Technologies (688486) Strong Limit-Up: Driven by High Earnings Growth and Multi-Domain Positive Factors

Longsoon Technologies (688486) is a STAR Market enterprise focusing on high-definition video signal processing and high-speed signal transmission chips [0]. Today’s limit-up is due to multiple factors:

1. High Earnings Growth
   : Net profit increased by 66.20% in the first three quarters of 2025, with a gross margin of 57.78% [0];
2. Favorable Policies
   : Semiconductor localization is accelerating, and the sector has risen 40.63% this year [0];
3. Segmented Demand
   : 11 chips passed automotive-grade certification, and automotive business is being batch-imported; 4K/8K chips meet AR/VR demand [0];
4. R&D Breakthroughs
   : R&D investment increased by 22.87%, with 26 new intellectual property rights added [0];
5. Capital Impetus
   : Northbound funds net bought 42.3873 million yuan [1][2], main funds net bought 138 million yuan [4], and the late-trading rally may be related to the Semiconductor Conference [8].

• Multi-Track Synergy
  : Covers high-growth sectors such as high-definition video, automotive, AR/VR [0][6];
• Localization Opportunities
  : Technological breakthroughs help increase market share [0][7];
• Institutional Recognition
  : Inflows of northbound and main funds reflect long-term potential [1][4].

: Broad space for automotive SerDes and ARVR [7]; sustained favorable policies [0]; leading technology [0].
: Industry cycle fluctuations; intensified competition; short-term correction risk [3].

Longsoon Technologies’ strong performance is the result of multiple overlapping factors, with solid long-term positioning. Pay attention to the Semiconductor Conference [8] and business progress, and be aware of short-term fluctuations.