June 23 (Reuters) - ASX Ltd ASX.AX
* Says not raising margin requirements ahead of Brexit vote
* Says reminds investors margins could be raised if necessary during course of Friday trading Source text for Eikon: Further company coverage: ASX.AX
June 23 (Reuters) - ASX Ltd ASX.AX
* Says not raising margin requirements ahead of Brexit vote
* Says reminds investors margins could be raised if necessary during course of Friday trading Source text for Eikon: Further company coverage: ASX.AX