机构今日买入天华新能等14股，卖出西藏城投7619万元

Group 1 - On November 21, a total of 28 stocks were identified with institutional activity, with 14 stocks showing net buying and 14 stocks showing net selling [1] - The top three stocks with the highest net buying by institutions were Tianhua Xinneng, Saiwei Electronics, and Yidian Tianxia, with net buying amounts of 288 million, 190 million, and 86.43 million respectively [1] - The top three stocks with the highest net selling by institutions were Tibet Chengtou, Vision China, and Longzhou Co., with net outflow amounts of 76.19 million, 66.92 million, and 60.49 million respectively [1]