特朗普6月超千笔证券交易，买入伯克希尔等
Donald Trump makes over 1,000 securities trades in June, buys Berkshire Hathaway, Visa, Mastercard, and Cintas
Trump's extensive trading activity highlights potential conflicts of interest and raises questions about transparency and market influence.
更进一步：量化金融体系
看懂新闻只是起点——沿量化金融路径，把它变成能交付的工程能力