Shares in fallen German fintech giant Wirecard jumped 138% during Monday trade, in what appears to be the latest irrational market pump for stock that could soon be worthless.

But despite more than doubling in one day, Wirecard stock is still down 96% in June, having collapsed almost entirely since auditors discovered its $2.1 billion financial ‘black hole.’

The company said on Saturday it would continue operations as the scandal plays out.