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OptionsMath

Early Assignment Risk Calculator

Early assignment risk rises when an in-the-money call's dividend exceeds remaining extrinsic value.

Expiration scenarios

Solution

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Early Assignment Risk Formula

For dividend assignment checks, compare upcoming dividend with call extrinsic value.

Worked Examples

Load these examples to compare common early assignment risk payoff outcomes.

DIVIDEND RISK

Compare dividend with call extrinsic value

An in-the-money covered call has little time value before ex-dividend.

  • 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

Covered calls are most exposed to early assignment around ex-dividend dates when dividend value exceeds call extrinsic value.

Example Problem

Enter stock price, strike, call price, dividend, and days to ex-dividend.

  1. Calculate intrinsic value.
  2. Subtract intrinsic from call price to estimate extrinsic value.
  3. Compare dividend with extrinsic value.
  4. Flag assignment risk.

Assignment decisions also depend on rates, borrow, liquidity, and holder behavior.

Key Concepts

Low extrinsic value and a large dividend increase exercise incentive.

Applications

  • Managing covered calls before ex-dividend.
  • Checking whether to roll.
  • Estimating shares at assignment risk.

Common Mistakes

  • Ignoring ex-dividend dates.
  • Using option price without separating intrinsic and extrinsic.
  • Assuming OTM calls are likely assigned.

Frequently Asked Questions

What does the Early Assignment Risk 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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