MASON(SZ:002654) Zheng Xing Xing Ye Ri Bao·2025-11-21 09:33Market Overview - The optical and optoelectronic sector experienced a decline of 3.12% on November 21, with Wanrun Technology leading the drop [1] - The Shanghai Composite Index closed at 3834.89, down 2.45%, while the Shenzhen Component Index closed at 12538.07, down 3.41% [1] Stock Performance - Notable gainers included: - Mulinsen (002745) with a closing price of 9.19, up 4.20% and a trading volume of 815,900 shares, totaling 727 million yuan [1] - Aobi Zhongguang (688322) closed at 80.86, up 1.32% with a trading volume of 84,500 shares, totaling 677 million yuan [1] - Significant losers included: - Wanrun Technology (002654) closed at 13.30, down 7.77% with a trading volume of 601,700 shares, totaling 815 million yuan [2] - Dongtian Micro (301183) closed at 89.28, down 6.57% with a trading volume of 63,400 shares, totaling 573 million yuan [2] Capital Flow - The optical and optoelectronic sector saw a net outflow of 2.194 billion yuan from institutional investors, while retail investors contributed a net inflow of 1.512 billion yuan [2] - The sector's overall capital flow indicates a mixed sentiment, with institutional investors withdrawing funds while retail investors increased their positions [2] Individual Stock Capital Flow - Mulinsen (002745) had a net inflow of 74.64 million yuan from institutional investors, but a net outflow of 93.20 million yuan from retail investors [3] - Other stocks like Huichuangda (300909) and Qianzhao Optoelectronics (300102) also showed varied capital flows, with institutional and retail investors reacting differently [3]