Fiat Chrysler Automobiles CEO Sergio Marchionne has increased his stake in the automaker to 1 percent and nearly doubled his voting stake after exercising stock options and cashing in on a share price jump after a plan to spin off Ferrari was unveiled last week.

Marchionne owns 12.1 million shares in FCA, equivalent to a 1 percent stake in the company, up from 0.65 percent he had before. The shares were worth $134 million at Tuesday’s closing price in New York. Marchionne held 6.8 million shares before the transaction.