Manap A, Yusnindar Y, Buana LSA, Pane S, Agung MR. Financial Performance of Investment Companies Using the Treynor-Black Method: An Analysis of Risk-Adjusted Returns and Portfolio Optimization. RIGGS [Internet]. 2025 May 4 [cited 2026 May 25];4(2):83-90. Available from: https://journal.ilmudata.co.id/index.php/RIGGS/article/view/457