Financial insiders are buying their own stock at the slowest pace in nearly 23 years—a ‘negative data point’ just as bank earnings kick off

As Wall Street’s biggest banks prepare for Q3 earnings starting next week, in one sense things have never looked better. Trading desks have been setting records. Blockbuster public offerings like SpaceX in June have also given bankers plenty reason to celebrate. But are the people who know the business best starting to have doubts about how long the run can last? A new report from VerityData showed that the number of financial executives buying shares of their own companies…