For six months, no one really noticed Culper Research’s report. All that changed this week.When Christian Lamarco decided to start his own short-selling firm, he named it in honor of the spies who gathered intelligence for George Washington during the Revolutionary War. He had watched a television show about the Culper ring, which secretly tracked the movements of British forces almost 250 years ago, and he couldn’t help but see the similarities between his shorting and their spycraft. Now he’s caught up in his own story involving national security, the president of the United States and spectacular allegations of modern...