Delphi Automotive ( DLPH) Company Profile: Delphi is the world's largest supplier of auto parts. After a Chapter 11 bankruptcy filing, Delphi went public again in November. Tepper's Investment: Appaloosa initiated a new position in Delphi during the quarter, buying 229,000 shares. The stake carried a market value of $4.9 million as of Dec. 31. Overall, the position represents less than 1% of Tepper's disclosed portfolio. Share Price Performance: Since the IPO, Delphi shares are up 36%, likely making the pick a winner for Tepper. The stock is up 35% since Dec. 31.