Australian shares closed lower on Thursday in a session of mixed fortunes for blue chips on one of the busiest days of annual earnings results so far this month.

The S&P/ASX 200 dropped 14.9 points to close at 7112.8 points, marking a 0.2 per cent decline, while the broader S&P All Ordinaries shed 23.4 points to close with 7257.7 points, 0.3 per cent less than the prior session.