Options Pricing Calculator

Stop guessing what an option is worth.This professional Excel template prices any call or put option on any stock in the Yahoo Finance universe - instantly. Just enter the ticker symbol, current price, and contract details. The spreadsheet does the rest.Two industry-standard models. One spreadsheet. Zero VBA required.What's Inside — 4 Fully Linked SheetsSheet 1: Market Data & Inputs Enter your Yahoo Finance ticker, stock price, volatility, dividend yield, risk-free rate, strike, and expiration date. Every other cell in the workbook updates automatically. Blue cells are inputs. Black cells are formulas. Days-to-expiration and time-to-expiry calculate themselves.Sheet 2: European Options (Black-Scholes) The closed-form analytical solution with full transparency - every intermediate value is exposed: d₁, d₂, N(d₁), N(d₂), discount factors, and dividend adjustments. Call and put prices with intrinsic vs. time value decomposition. Automatic put-call parity verification. Complete Greeks table: Delta, Gamma, Theta, Vega, and Rho for both calls and puts, with plain-English interpretations.Sheet 3: American Options (Binomial CRR) The Cox-Ross-Rubinstein discrete-time lattice model with early exercise analysis. See every CRR parameter (Δt, u, d, p, discount factor), the early exercise premium quantified in both dollars and percentage, a convergence table showing accuracy from 10 to 500 steps, and dynamic exercise recommendations that tell you when early exercise makes sense - and when it doesn't.Sheet 4: Summary & Exercise Strategy The decision-making sheet. Side-by-side European vs. American price comparison. Breakeven analysis for calls and puts (exact price + required stock move). A 9-scenario P&L table spanning ±20% moves. Greeks at a glance. And five dynamic justification narratives that adapt to your specific inputs - covering volatility impact, time value, moneyness, European vs. American trade-offs, and an overall assessment. These narratives change automatically as you update inputs.Key Features Works with ANY stock on Yahoo Finance - AAPL, TSLA, MSFT, GOOG, or any ticker Two models: Black-Scholes (European) and Binomial CRR (American) Full option Greeks: Delta, Gamma, Theta, Vega, Rho Put-call parity verification built in Early exercise premium quantified (American vs. European difference) Breakeven analysis with exact prices and required moves 9-scenario P&L table (±20% stock moves at expiry) Dynamic narrative justifications that adapt to your inputs Implied volatility override option 129 interconnected formulas - all transparent, no VBA, no macros Professional color-coded formatting (blue = inputs, black = formulas) Works in Excel, Google Sheets, and LibreOffice Who This Is For Retail traders pricing options before entering a trade Finance students learning Black-Scholes and binomial models Portfolio managers needing quick option valuations CFA/FRM candidates studying derivatives pricing Anyone who wants to understand why an option costs what it costs What You Get 1× Excel file (.xlsx) - 4 sheets, 129 formulas, zero errors Pre-loaded with AAPL as a working example Immediate download, works right away No macros. No VBA. No plugins. Just pure Excel formulas you can audit and trust.

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