Sindi Sri Deviana Manalu, Jonny Siagian, and Ganda T. Hutapea. “The Influence Of Profitability Rasio On Stock Performance With Return Market Control Variabel In The Telecomunication Sub-Sector Listed On The Indonesia Stock Exchange Before, During and After Covid 19 ”. Fundamental Management Journal, Vol. 9, no. 2, Oct. 2024, pp. 1 - 25, doi:10.33541/fjm.v9i2.6288.