Oct. 28 (Bloomberg) -- Germany's financial-markets regulator is looking into trading of Volkswagen AG shares after Porsche SE's plan to raise its stake in the automaker triggered a fourfold increase in two days.
BaFin is monitoring Volkswagen and hasn't started a formal probe, said spokeswoman Anja Engelland. The gains follow Porsche's Oct. 26 announcement that it plans to increase the stake in Volkswagen to 75 percent. The move forced short-sellers to cover their bets on a decline in the stock.
Volkswagen, Europe's biggest carmaker, is the most shorted stock in Germany's benchmark DAX Index. The so-called short squeeze today pushed the value of Wolfsburg, Germany-based Volkswagen's common shares as high as 296 billion euros ($370 billion), more than Exxon Mobil Corp.'s $343 billion at yesterday's close in New York, according to data compiled by Bloomberg.