ETF transparency could be better

'Pressure growing for greater transparency' reads a headline in the Financial Times (7 Feb 2011). What is particularly worrying - among some other aspects - is that ETFs are not bound by trading rules that apply to single shares. Neither completed trades nor bid-offer prices have to be reported and investors are to a certain amount kept at a disadvantage vis-a-vis the market makers. As a consequence extra care has to be taken when dealing in ETFs.