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Intrinsic and Time Value: An Option-Chain Worksheet

For educational purposes only; not investment advice.

Direct answer

Section titled “Direct answer”

An option premium can be recorded as:

premium = intrinsic value + time value

For underlying price S and strike K:

Call intrinsic value = max(S - K, 0)

Put intrinsic value = max(K - S, 0)

Time value = option price - intrinsic value

Intrinsic value measures favorable immediate-exercise economics, not trade profit. Time value, also called extrinsic value, is the remaining premium for possible future outcomes before expiration. At expiration no time remains, so contract value is determined by the applicable settlement value and contract terms.

Use synchronized, executable inputs

Section titled “Use synchronized, executable inputs”

A useful worksheet records the underlying quote and option quote at the same time. Calculate separate results using the bid, midpoint, ask, or actual fill, and label the chosen price. A stale last trade mixed with a live stock price can create apparent negative time value. A midpoint is descriptive unless it can actually be executed.

For a standard equity option with multiplier 100:

contract component = per-share component × 100

Do not assume every adjusted contract delivers 100 ordinary shares. Splits, special dividends, mergers, and other corporate actions can change the deliverable; use OCC contract information and the brokerage confirmation.

Time value reflects remaining time, implied volatility, distance from strike, rates, expected distributions, exercise style, borrow conditions, and supply and demand. Theta is a model sensitivity, not a fixed daily debit. Time value can rise after one day passes if another input changes enough.

For an American-style option, exercising before expiration generally discards remaining time value. A holder should compare an executable sale with exercise economics and consider dividends, financing, borrow, taxes, account constraints, and deadlines. Being in the money alone does not prove early exercise is optimal.

Quote-side worksheet

Section titled “Quote-side worksheet”

Assume stock is quoted at $103.00 and a $100 call is quoted $5.10 bid / $5.30 ask.

Intrinsic value = max($103 - $100, 0) = $3.00

Valuation basis Option price Intrinsic Time value Contract time value
Bid $5.10 $3.00 $2.10 $210
Midpoint $5.20 $3.00 $2.20 $220
Ask $5.30 $3.00 $2.30 $230

A buyer entering at $5.30 pays $530, of which $300 is current intrinsic value and $230 is time value. Immediate exercise captures $300 of exercise economics but gives up the option; it does not recover the $530 cost. If a sale at the $5.10 bid is available, selling produces $510 before costs and preserves the quoted time value.

Now suppose the screen shows an old last trade of $2.90 while stock has just moved to $103.00. The calculation produces -$0.10 time value. That is a data-timestamp warning, not proof of an executable arbitrage. Recheck live bid and ask, market status, contract symbol, deliverable, and price condition.

At expiration with settlement at $106, the call value is $6.00 × 100 = $600. A buyer who paid $530 has $70 gross profit; a buyer who paid $700 has $100 gross loss. The same intrinsic value can correspond to different trade results.

Risks and review checks

Section titled “Risks and review checks”
  • Timestamp risk: mismatched stock and option prices make the residual unreliable.
  • Execution risk: bid, ask, midpoint, last trade, and model value are not interchangeable.
  • Profit confusion: intrinsic value does not include the premium paid or received.
  • Early-exercise risk: exercise can surrender time value and create stock, cash, dividend, or borrow consequences.
  • Event repricing: an IV decline can reduce time value even when the directional view is right.
  • Nonlinear decay: dividing time value by days remaining does not predict tomorrow’s change.
  • Contract-adjustment risk: a nonstandard deliverable changes exercise economics and contract totals.
  • Settlement risk: official settlement procedures may differ from the last displayed underlying price.
  • Assignment risk: a short American-style option can be assigned before expiration.

Common misconceptions

Section titled “Common misconceptions”
  • “An ITM option is profitable.” Profit also depends on entry premium, exit price, multiplier, and costs.
  • “An OTM option has no value.” It has zero intrinsic value but may have time value before expiration.
  • “Time value falls by the same amount each day.” Price inputs and sensitivities change continuously.
  • “The midpoint is cash I can receive.” It may not be executable.
  • “Exercising captures the full market premium.” Exercise generally captures intrinsic economics and abandons remaining time value.
  • “Negative displayed time value is free money.” First investigate stale, crossed, closed, or adjusted markets.
  • “All equity-option contracts equal 100 shares.” Adjusted contracts can have different deliverables.
Section titled “Related topics”

Authoritative sources

Section titled “Authoritative sources”