The billionaire family behind H&M is quietly increasing its stake, fueling speculation it could take the fast-fashion retailer private as CEO Daniel Erver's turnaround efforts have so far failed to boost the shares or lift sales significantly ↧ H&M founding family builds stake as turnaround struggles to gain tr... The billionaire family behind H&M is quietly ‌increasing its stake, fuelling speculation it could take the fast-fashion retailer private as CEO Daniel Erver's turnaround efforts have so far failed to boost the shares or lift sales significantly.