Jevan Michael, Shella Koirun Nisa, Serina Muslimah and Jazilatul Wafiroh 2025. PERFORMA SAHAM OPERATOR SELULER DI LQ45: ANALISIS EXPECTED RETURN DAN STANDAR DEVIASI PADA SAHAM TLKM, EXCL, DAN ISAT. IJESM Indonesian Journal of Economics and Strategic Management. 3, 1 (Mar. 2025). DOI:https://doi.org/10.69718/ijesm.v3i1.398.