What happens after a CEO visits the White House? For the most part, we just don’t know: U.S. presidents, Trump included, have kept their visitor logs private. President Obama, however, broke with long-standing tradition and made his public. While there’s plenty of debate around whether or not transparency around these logs has a broad impact, one thing is for certain: more than half a decade (2009-2015) of the comings and goings of S&P 1500 corporate executives, totaling more than 2,000 meetings in all, is a pretty useful data set. And it’s exactly the one University of Illinois and NBER researchers Jeffrey R. Brown and Jiekun Huang used in conjunction with other financial data to pose an intriguing question in their working paper: do companies see a stock bump after an executive has an Oval Office meeting?