📊 SINDEX

All calculations use standard financial formulas with annualization:

• Returns: r_t = ln(P_t / P_{t-1}) - Log returns (continuously compounded)
• Correlation: ρ = Cov(r_a, r_b) / (σ_a × σ_b) - Pearson correlation coefficient
• Beta (β): β = Cov(stock, market) / Var(market) - Systematic risk vs MASI index
• Alpha (α): α = (E[r_s] - r_f) - β × (E[r_m] - r_f) - Jensen's alpha (annualized, Rf=3.5%)
• Volatility: σ_annual = σ_daily × √252 - Annualized standard deviation
• R-squared: R² = (Correlation)² - Explained variance by market model

Important: All calculations performed locally. Demonstration data is from Dec 2025 - Jan 2026. For real investment decisions, consult a financial advisor.