Property stocks were the worst performers in the ASX 200, ho...

Property stocks were the worst performers in the ASX 200, however most of them went ex-dividend. Mirvac ( $Mirvac Group (MGR.AU)$ ) shares for example fell 11.5c or 5.97% but paid out a 6c dividend – so in reality shareholders were only down 5.5c or about 3%.
Generally when a company goes ex-dividend it will fall by at least the amount that is being paid out. That is because the company’s bank balance and hence it’s worth will also fall by the dividend amount. $S&P/ASX 200 (.XJO.AU)$