Fiat today exercised an option to raise its stake in Chrysler by 3.3 percent.

The move is part of CEO Sergio Marchionne’s step-by-step purchases intended to lead to full control of Chrysler and the creation of a merged company that would be able to compete better with industry leaders Toyota, General Motors and Volkswagen.

Fiat has been exercising options since mid-2012 to buy holdings of about 3.3 percent from the VEBA, a medical-benefits trust for the U.S. carmaker’s retirees.

Including today’s purchase, Fiat has exercised three of its six-monthly options, increasing its stake to 68.49 percent.

Fiat has said it wants full […]