Core Insights - In 2025, nearly 80% of A-shares (4,230 stocks) experienced annual gains, with the Shanghai Composite Index rising by 18.41% and 2,921 stocks outperforming the market [1][4] - A total of 540 stocks doubled in price, and 10 stocks saw gains exceeding 500%, becoming "wealth creation machines" for investors [1][4] Top Gainers - The top gainer, Shangwei New Materials, surged by 1,820.29%, followed by Tianpu Co., which rose by 1,645.35%. Both companies benefited from restructuring and acquisition activities [2][5] - Shangwei New Materials had 16 trading halts, while Tianpu Co. had 33, indicating strong market interest [2][5] Controversial Stocks - *ST Yushun and *ST Yezhen, both under delisting risk warnings, achieved remarkable gains of 719% and 637%, respectively. This volatility is viewed as speculative behavior by investors [3][6] - *ST Yushun recorded 70 trading halts, the highest in A-shares, while *ST Yezhen had 65 [3][6] Other Notable Performers - The remaining stocks in the top 10, including Shenghong Technology, Feiwo Technology, Filinger, Ding Tai High-Tech, Hengbo Co., and Shunhao Co., saw annual gains between 500% and 600% [3][6] - Shenghong Technology's 586% increase was driven by the expansion of the AI server market, with a 324% rise in net profit for the first three quarters [3][6] - Feiwo Technology, a leader in wind power fasteners, benefited from the booming commercial aerospace and low-altitude economy, achieving a 581% increase [3][6] - Shunhao Co. entered the commercial aerospace sector through a 1.1 billion yuan acquisition, resulting in a 507% stock price increase [3][6] Industry Distribution - The top 10 gainers represented a diverse range of industries, including plastics, automotive parts, optical electronics, household goods, wind power equipment, and packaging [4][7]