Schnigge, a German brokerage firm which operates a grey market in pre-IPO stocks, is quoting Deutsche Börse shares at €340 to €351 a share for when trading on the €2.8bn ($2.7bn) initial public offering starts on February 5.
This represents an 11% premium to the mid-point of Deutsche Börse's price range of €285 to €335 a share for its IPO, which was officially launched on Monday.