Group 1 - The core point of the news is that 28 stocks were listed on the institutional trading leaderboard, with 17 stocks experiencing net buying and 11 stocks facing net selling [1] - The top three stocks with the highest net buying by institutions were Hunan Silver (363 million), Pengding Holdings (229 million), and Sanbian Technology (79.38 million) [1] - Hunan Silver saw a price increase of 9.97% with 4 buyers and 2 sellers, while Pengding Holdings increased by 10.00% with 3 buyers and 4 sellers [2] Group 2 - Pengding Holdings had a net buying of 229 million from 6 institutions, and it plans to invest 4.297 billion in a Thai park to build high-end HDI and SLP capacity for various applications including AI servers and low-orbit satellites [3] - The high-end HDI products of Pengding Holdings have been certified by several well-known AI server manufacturers, creating a comprehensive product matrix covering AI mobile phones, AIPC, and AI glasses [3] - The controlling shareholder of Pengding Holdings, China First Heavy Industries, is a member of the controllable nuclear fusion innovation consortium [3]