Fiat Chrysler Automobiles NV’s plan to raise money by spinning off Ferrari took a step forward with the automaker filing for the unit’s initial public offering on the New York Stock Exchange. Fiat Chrysler, which has said it sees the supercar unit valued at more than $11 billion, plans to complete the separation in early 2016, the Italian-American manufacturer said in a filing with the U.S. Securities and Exchange Commission.