Unmasking the Men Behind Zero Hedge, Wall Street's Renegade Blog

Colin Lokey, also known as "Tyler Durden," is breaking the first rule of Fight Club: You do not talk about Fight Club. He’s also breaking the second rule of Fight Club. (See the first rule.)

After more than a year writing for the financial website Zero Hedge under the nom de doom of the cult classic’s anarchic hero, Lokey’s going public. In doing so, he’s answering a question that has bedeviled Wall Street since the site sprang up seven years ago: Just who is Tyler Durden, anyway?

The answer, it turns out, is three people. Following an acrimonious departure this month,...