Tepper's net-selling activity in AI stocks may have to do with more than just simple profit-taking.Wall Street runs on information, and investors rarely have to look too far for market-moving data. Everything from President Donald Trump's ever-changing tariff and trade policy to earnings season provides clues to investors about the current and future health of corporate America and the U.S. economy.But one of the most-telling of all data releases occurred roughly two weeks ago, on May 15. This was the deadl ...