长飞光纤振幅18.55%，机构龙虎榜净买入1.62亿元

Group 1 - Changfei Fiber (601869) experienced a price increase of 4.73% with a trading volume turnover rate of 8.98% and a total transaction value of 1.298 billion [1] - The stock exhibited a volatility amplitude of 18.55%, leading to its listing on the Shanghai Stock Exchange's watchlist for significant price movement [1] - Institutional investors net purchased 162 million, while the Shanghai-Hong Kong Stock Connect saw a net purchase of 36.4018 million, contrasting with a total net sell of 261 million from brokerage seats [1]