$Q&M Dental(QC7.SI)Q & M DentalBetween Nov 12 and 18, Quan Min Holdings acquired 7,584,300 shares of Q & M Dental Group (Singapore) Q&M Dental: QC7 +0.84% (Q & M) shares.Quan Min Holdings is an investment holding company incorporated in Singapore and Q & M's ultimate parent company.The shares were acquired at an average price of 59.3 cents per share with a total consideration of S$4,497,276.The acquisitions increased the deemed interest of founder and group CEO, Ng Chin Siau in Q & M from 51.60 per cent to 52.41 per cent.Quan Min Holdings' direct holdings in Q & M also crossed above the 52.0 per cent threshold on Nov 16.The acquisitions followed Q & M reporting on Nov 11 that its 9MFY21 (ended Sep 30) net profit had surged 154 per cent from 9MFY20, to S$