BV Group, the Swiss early-stage investor in communications and medical technology, is set to become the latest private equity firm to withdraw from its stock exchange to save costs, after writing down its portfolio by more than half in the first six months of this year.

Last week TFG Venture Capital, the German early-stage high-tech investor, said it would leave Smax, the German stock exchange index for small caps. Both firms view their listings as an expensive luxury and see withdrawal as a way to save unnecessary costs.