Tarina, Helena Disia Nadia, Roy Sembel, and Juaniva Sidharta. 2021. “ORMATION OF OPTIMAL STOCK PORTFOLIO USING SINGLE INDEX MODEL CUT-OFF RATE METHODE, MARKOWITZ MODEL, AND CAPITAL ASSET PRICING MODEL IN 11 INDUSTRIAL SECTORS LISTED ON THE INDONESIA STOCK EXCHANGE 2016-2020””. Fundamental Management Journal 6 (2p), 51 - 65. https://doi.org/10.33541/fjm.v6i2p.3415.