Bank and Stock

🔍 Explanation of the SX FormulaIn this calculator, the variable SX is a computed value representing an adjusted form of investment returns, influenced by the interest rate r and the time period TX. The formula used is: SX = (O3 - O2) / (1 - 0.95 * exp(-r * TX)) This value behaves in an important way: 🧠 As the interest rate r approaches zero, SX approaches the value of S — meaning the impact of interest diminishes and SX converges to the simpler result of S = B - (O × T). However, when the interest rate is higher, the influence of interest increases. This can cause SX to diverge significantly from the base value S, especially when r and TX are large. This divergence is meaningful. If we assume that interest rates and the investment target (e.g., a stock or a project) are in a competitive relationship, then such sensitivity is realistic. High interest rates often lead investors to favor interest-bearing assets over equities or speculative investments, causing price deviations from intrinsic values. In short: 📉 Lower interest → SX ≈ S 📈 Higher interest → SX may diverge from S

① B - O × T = S の計算

B: O: T: O2: r (割引率など): TX (期間): ⑤ 日付: ⑤ 企業名: ⑥ 説明欄（5行程度）:

⑦ 計算結果: