Oct 19 (Reuters) - Singapore Exchange Ltd :
* Q1 securities trading and clearing revenue decreased s$8.9 million or 16%
* Expect full year fy2017 operating expenses to be between s$420 million and s$430 million
* "participants reacting and adjusting to implications of brexit on european economy could result in a period of relatively subdued trading volumes"
* "will continue to be disciplined about costs" Source text for Eikon: Further company coverage: