Abstract: The study investigates the dynamic relations between macroeconomics behaviour and all share price index (ASPI) performance in post war economy of Sri Lanka for the period 2009-2016, using monthly series of the corresponding variables. The study considers Average Weighted Prime Lending Rate (AWPR) and Average Weighted Deposit Rate (AWDR), money supply as measure for country’s interest rates which supervise the behaviour of money market, Colombo Consumer price index as measure of inflation and exchange rates as the measure of external sector in economy of Sri Lanka.