Portfolio Greeks Calculator
Calculate portfolio-level Greeks across all your positions. See total delta, gamma, theta, and vega exposure to understand aggregate risk and make better hedging decisions.
What is Portfolio Greeks Calculator?
Portfolio Greeks Calculator is a tool that aggregates the Greeks (delta, gamma, theta, vega, rho) across multiple option positions to show your portfolio's total risk exposure and sensitivities.
Portfolio Greek analysis is crucial for managing complex multi-leg strategies and understanding how your entire book will react to price moves, time decay, and volatility changes.
How the Portfolio Greeks Calculator Works
Portfolio Greeks sum every position's Greeks into one net exposure: Portfolio Delta = sum of (position delta × contracts × 100) across every position, and the same summation applies to Gamma, Theta and Vega. The totals show your account's real directional, convexity, time-decay and volatility exposure — not just each trade's exposure in isolation.
Example: several positions that each look roughly delta-neutral on their own — a handful of iron condors, say — can still sum to a portfolio delta most traders wouldn't expect once differing strikes and skew are added up. A book that looks balanced position-by-position can hide a real directional bias that only the aggregated total reveals.
A common rule of thumb caps portfolio delta at roughly 10% of account value in delta exposure — a $50,000 account might limit net delta to about ±500 ($50,000 / 100), rebalancing as positions age and their deltas drift.
Frequently Asked Questions
Why calculate portfolio Greeks?
Portfolio Greeks reveal your aggregate risk exposure across every position. Individual trades can look balanced while the portfolio as a whole is not — a set of "neutral" iron condors can still add up to real net delta, gamma, or theta exposure. Portfolio Greeks help you adjust hedges, manage risk limits, understand what is driving P&L, and catch overexposure before it becomes a problem.
What is a good portfolio delta?
It depends on your strategy and market outlook. Delta-neutral traders keep net delta within about 1% of account value; directional traders may run much larger delta on purpose. A common rule of thumb caps net delta at roughly 10% of account value — a $50,000 account limiting delta exposure to about ±500 ($50,000 / 100). Rebalance as positions age, since every Greek drifts with price and time.
Related Options Strategies
Options Greeks Guide
Master individual Greeks before portfolio analysis.
Hedge Ratio Calculator
Use total delta to calculate hedges.
Iron Condor Strategy
Monitor portfolio Greeks when running multiple condors.
Understanding related strategies helps you choose the best approach for your market outlook and risk tolerance. Each strategy has unique characteristics that make it suitable for different market conditions.