Wabco Holdings (WBC)
Change in Position: Liquidated position of 3.37 million shares
Buffett had a relatively small position in Wabco Holdings to begin with, but he unloaded it throughout 2017. At the end of 2016, Berkshire Hathaway held 3.37 million shares of WBC, but that position had been completely liquidated by the 2017 third quarter. Wabco, the leading global supplier of commercial vehicle technologies, is the type of old-line, "easy-to-understand" business that Buffett traditionally likes. However, with the small number of shares involved, it appears that Berkshire's interest in the company was just a test position rather than the type of concentrated, long-term position that Buffett favors.