Aug 22 (Reuters) - Sydney Airport Holdings Pty Ltd SYD.AX :
* FULL YEAR 2018 DISTRIBUTION GUIDANCE REAFFIRMED AT 37.5 CENTS PER STAPLED SECURITY
* REAFFIRMED CAPEX GUIDANCE OF UP TO $1.3-$1.5 BILLION FOR 2018-2021 PERIOD
* REAFFIRMED CAPEX GUIDANCE WITH ABOUT $360-$400 MILLION EXPECTED TO BE INVESTED FOR FY 2018