Despite a strong second quarter for CSX Corp., the company’s stock is plummeting after a bombshell revelation from new CEO Hunter Harrison during the Wednesday morning earnings call.

Harrison, whose arrival at CSX led the stock to hitting an all-time high, told analysts during a conference call that his tenure with the company would be short, and that he sees his role as an interim leader to get the company to solid footing before he exits.

“I’m a short-timer here,” said Harrison. “I’m the interim…