The largest international stock exchanges are continuing to struggle amid slowing trading volumes, with the main markets losing nearly 15% of their market capitalisation last month alone, an index has revealed.

The FTSE Mondo Visione Exchange Index - which tracks the share prices of 18 flagship exchanges around the globe - fell 14.8% last month, compared to the end of last year. This was 66.6% down compared with a year earlier and 72.2% below the index high in December 2007.