Raja, R.S. and Aravinth 2026. Construction Of Optimal Portfolio Using Sharpe’s Single Index Model: An Empirical Study on Nifty 50 Stocks. International Academic Journal of Accounting and Financial Management. 13, 1 (Feb. 2026), 1–12. DOI:https://doi.org/10.71086/IAJAFM/V13I1/IAJAFM1301.