欧科亿今日大宗交易折价成交10万股，成交额510万元

Group 1 - The core point of the article highlights that Okoyi conducted a block trade of 100,000 shares on February 12, with a transaction value of 5.1 million yuan, accounting for 1.36% of the total trading volume for that day [1][2] - The transaction price was set at 51 yuan per share, which represents a discount of 5.99% compared to the market closing price of 54.25 yuan [1][2] Group 2 - The stock code for Okoyi is 688308, and the transaction was executed by a brokerage firm identified as "Yao Dan Xu Guan Li Ji Di" [2]