机构今日买入立讯精密等21股，抛售波长光电1.95亿元

Group 1 - On September 23, a total of 40 stocks were identified with institutional activity, with 21 stocks showing net buying and 19 stocks showing net selling [1] - The top three stocks with the highest net buying by institutions were Luxshare Precision, Demingli, and Haibo Sichuang, with net buying amounts of 373 million, 362 million, and 178 million respectively [1] - The top three stocks with the highest net selling by institutions were Wavelength Optoelectronics, Wolong Nuclear Materials, and Yingqu Technology, with net outflow amounts of 195 million, 185 million, and 161 million respectively [1]