Shareholders of Swiss-German derivatives exchange Eurex have reportedly asked chief executive Rudi Ferscha to prepare a possible exit strategy from the US. It comes a month after he admitted the exchange had lost a battle with the Chicago Board of Trade for US Treasuries.

Ferscha has been asked to present a "clear concept" on the exchange's future in the US, as well as an "elegant exit solution" at a board meeting next month, according to reports in German newspaper Die Welt on Friday.