CAPM is an economic model for the assessment of share , securities, and / or asset related to risk level and expected rate of return. CAPM relied on idea that investor claim expected rate of return the so-called as Risk premium, if all investor have the kindness to accept risk level. This research aim to to elaborate rate of return and risk at active share of LQ45 which enlist in BEJ. used by Samplel share which including in LQ45 with period from year 2002 - 2006.For a while for the Index of Price LQ 45 and SBI level also taken by at is same period This research include 3 step, first step namely to elaborate rate of return and risk level at active share of LQ45 which enlist in Bursa Efek Jakarta, please find that high rate of return at share have to ready to account big risk also. Second from this research to elaborate how big diversified by at active share can degrade risk from portofolio, from research got that intake of merged into share portofolio counted 12 with assessment to constant share from year 2002 - 2006, with share proportion level in portofolio pursuant to sequence from smallest risk level up to share owning biggest risk level by paying attentionalso mount return.dan also by paying attention correlation level between share which is one with other negating each other. Whereas third phase in this research namely to elaborate how efficient or optimal portofolio form, with error and trial system. Biggest proportion at compilation of share in portofolio by virtue of smallest risk level by paying attention also its rate of return up to biggest risk level. This research also found also that share owning small risk storey;level not yet of course got big proportion portofolio, because of the share have rate of return which is smaller to be compared to risk level which consist in in it. From research off share sampel in the reality after estimated by risk, by using empirical data 5 is annual. There are 2 emiten having value ? valuable of negativity, and though mean r2 only equal to this 0,83 Matter indicate that all share tend to to make a move unidirectional by fluctuateing market return him ( rm) and 83% from individual share return-return variation can be explained by variation of from Market. After return found by empirical CAPM regression parameter, here in after can be used for the prediction of share return to one year come under colour of estimate. which have been known Thereby in this research, where for the predictioni of share return - merged into share portofolio which consist of LQ45 share by using empirical base data 5 year, having good correlation level. |