Emmanuella Anandita Kurniadewi, “Stock Performance: Sharpe, Treynor, and Jensen Approach in BUSINESS27 Index 2019-2023”, Bachelor of Applied Thesis, Majoring in Accounting, Polytechnic State of Semarang, under the guidance of Muhammad Rois, S.E., M.Sc., and Winarni, S.E., M.M., January 2025, 89 pages. This research aims to analyze the stock performance of companies in the BUSINESS27 index…