Group 1 - Ningbo Marine triggered trading disclosure conditions due to price fluctuations, with diverse buying positions observed [1] - The leading buyer, Guotai Junan Securities, purchased 36.48 million yuan, with a 46% probability of the stock rising in the following three days [1] - UBS Securities and Dongfang Caifu Securities also appeared among the top buyers, with respective purchases of 20.73 million yuan and a high activity level [1] Group 2 - The selling side is characterized by a concentration of foreign institutions, with Goldman Sachs and JPMorgan collectively selling 48.05 million yuan [1] - Guotai Junan Securities also led in selling, with a net sell of 37.06 million yuan, indicating a dual-direction operation [1] - Market analysis suggests a divergence in institutional funds regarding Ningbo Marine, with a general short-term rising probability below 50% for major trading units [2]