After (initial) falls, London's FTSE 100, Paris's Cac and Frankfurt's Dax (indexes) were up between 1.5% and 2.5%.

Earlier, Asian (stocks) were mixed as (global) trading remains (nervy).

Short-selling involves investors selling (stocks) they do not own at the time, in the expectation they will drop in price, before buying them back and (pocketing) the difference.

Steven Maijoor, the (chairman) of the European Union's financial regulator, the European Securities and Markets Authority (ESMA), said there were no current plans to (expand) a ban on short-selling financial stocks to other (countries), but added such a move could not be (ruled) out.