Gartman: The real winner from Iran deal talks By: CNBC.com News July 13, 2015 at 18:53 PM EDT As oil slid on speculation of an Iran nuclear deal, Dennis Gartman of "The Gartman Letter" said one group could be a big beneficiary. Read More >> Related Stocks: Nordic American Tanker Shipping Ltd Scorpio Tankers Inc Teekay Tankers Ltd