DIA retailer is most shorted stock

DIA has become a frustrating play for short sellers. The Spanish supermarket chain’s shares are up 12% this year, outperforming peers.

That’s unwelcome news for the firms that have collectively sold short a quarter of DIA’s shares, according to IHS Markit, worth about €820m at the current price.

Among them is Marshall Wace, which also bet against Carillion, the UK building contracting company that plunged 71% last week.