Bulletin – September 2016 Equation (1)

r ^ i = r f + β i [ E( r m ) r f ] MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGabmOCayaajaWaaSbaaSqaaiaadMgaaeqaaOGaeyypa0JaamOCamaaBaaaleaacaWGMbaabeaakiabgUcaRiabek7aInaaBaaaleaacaWGPbaabeaakmaadmaabaGaamyramaabmaabaGaamOCamaaBaaaleaacaWGTbaabeaaaOGaayjkaiaawMcaaiabgkHiTiaadkhadaWgaaWcbaGaamOzaaqabaaakiaawUfacaGLDbaaaaa@484D@