FACTBOX-German stocks on Turquoise at 10 pct of Xetra volume

Sept 22 (Reuters) - Volumes in the top three German stocks traded on alternative cash equities platform Turquoise amounted to roughly one-tenth of volumes in the same stocks in Frankfurt stock exchange operator Deutsche Boerse's electronic order-matching system, Xetra, by 1230 GMT on Monday, Turquoise's official launch date. Stock RIC Xetra volume Turquoise volume