研奥股份今日大宗交易折价成交29万股，成交额724.14万元

Group 1 - The core point of the news is that Yan'ao Co., Ltd. executed a block trade of 290,000 shares on January 29, with a transaction value of 7.2414 million yuan, representing 13.22% of the total trading volume for that day [1] - The transaction price was 24.97 yuan, which is an 8.9% discount compared to the market closing price of 27.41 yuan [1] - The block trade involved institutional buyers, with specific details indicating that the shares were traded through Northeast Securities Co., Ltd. [2]