Sufar, Saiful Bahri - 2000
-market conditions.Test of the APT entails the detennination on the number of factors, estimating thesensitivities or risks of stocks to …-periods. APCA on any sample of stocks cou1l produce a first factor that is common amongstocks, while other factors are more sample … toproduce a significant risk premium. The sensitivities of the stocks to the factors werefound to differ across sub-periods, but …