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Portfolio Greeks Calculator

Portfolio Greek equals shares plus option Greek times 100 shares per contract times number of contracts.

Expiration scenarios

Solution

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Educational estimate only, not financial advice. Results exclude commissions, taxes, slippage, dividends, assignment risk, margin, and broker-specific rules. Verify before trading options.

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Portfolio Greeks Formula

Net Greeks aggregate shares and option contracts from manual Greek inputs.

Worked Examples

Load these examples to compare common portfolio greeks payoff outcomes.

GREEKS

Add shares and option Greeks

A stock-plus-options portfolio needs net delta and theta checked.

  • Enter the manual prices and assumptions.
  • Review the calculated risk, reward, and break-even metrics.
  • Compare the chart with the highlighted scenario.

Result: the calculator updates the scenario metrics and chart from those inputs.

Real fills, fees, and broker margin rules are not modeled.

How It Works

This calculator aggregates manual share exposure and option Greeks into portfolio-level Greeks.

Example Problem

Enter shares, option Greek values, and signed contract quantity.

  1. Multiply each option Greek by 100 shares and contracts.
  2. Add shares to delta.
  3. Estimate delta/gamma P&L for underlying moves.

Greeks change as price, time, and volatility move.

Key Concepts

Delta estimates directional exposure, gamma estimates delta change, theta estimates time decay, and vega estimates volatility sensitivity.

Applications

  • Checking hedge size.
  • Summing option exposure.
  • Estimating move sensitivity.

Common Mistakes

  • Forgetting the 100-share multiplier.
  • Mixing per-share and per-contract Greeks.
  • Treating Greeks as constant over large moves.

Frequently Asked Questions

What does the Portfolio Greeks Calculator calculate?

It calculates the selected options result from manual inputs, without requiring live stock or option quotes.

Does this calculator need live market data?

No. Enter the prices, premiums, volatility, days, or Greeks yourself. The calculator uses those manual inputs only.

Are commissions, taxes, margin interest, and assignment fees included?

No. The result excludes commissions, fees, taxes, borrow costs, slippage, and broker-specific margin rules.

Why can real trading results differ?

Real option prices can change with implied volatility, liquidity, dividends, early assignment, and execution prices.

Reference:

Standard options payoff, probability, and risk-management formulas.

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