Macquarie Group hits over 6-month low on ex-dividend trade

** Australia's Macquarie Group MQG slips 2.62% to A$195.32, hitting their lowest since early May

** Stock is the biggest laggard on the financials subindex XFJ, dragging it 0.5% lower

** Country's biggest investment bank trades ex-dividend

** Company declared an interim dividend of A$2.80 per share, higher than the A$2.60 declared last year

** Stock has lost 11.9%, so far this year