Physically Settled Options: Shares, Strike Cash, and Account Risk
For educational purposes only; not investment advice.
Direct answer
Section titled “Direct answer”A physically settled option transfers the contract’s deliverable against the strike-price payment when exercised and assigned. For a standard U.S. equity option, the deliverable is ordinarily 100 shares per contract, but corporate-action adjustments can produce a different share count, cash component, multiple securities, or another package.
Physical settlement is separate from the opening premium. Premium is paid or received when the option trades; strike cash and shares move when exercise and assignment are processed. A profitable option position can therefore create a stock position or cash requirement much larger than its premium.
Map the four directions
Section titled “Map the four directions”Let K be strike, M the deliverable share count, and N the number of contracts. For a simple standard equity contract, M = 100:
strike cash = K × M × N
| Position after exercise or assignment | Deliverable movement | Strike cash movement |
|---|---|---|
| Long Call exercises | Receive M × N shares |
Pay strike cash |
| Short Call is assigned | Deliver M × N shares |
Receive strike cash |
| Long Put exercises | Deliver M × N shares |
Receive strike cash |
| Short Put is assigned | Receive M × N shares |
Pay strike cash |
The holder decides whether to exercise within applicable rules and deadlines; a writer cannot choose whether a valid exercise is allocated as an assignment. OCC processes exercise and assignment through clearing members, and brokers apply their procedures to customer accounts. An order to close removes future exposure only after it fills and after any prior assignment is accounted for.
American-style contracts may be exercised before expiration. At expiration, exercise-by-exception and contrary-instruction procedures can apply, but brokers can impose earlier customer cutoffs and risk controls. A displayed in-the-money amount is not an operational instruction. Verify the exact product, broker process, and account entries.
Settlement does not necessarily appear everywhere at one instant. Exercise instruction, OCC processing, broker allocation, security delivery, cash posting, buying-power change, and statement display can occur on a timeline governed by current rules and agreements. Do not trade resulting shares until the account position is confirmed.
Three contracts create a $13,500 delivery
Section titled “Three contracts create a $13,500 delivery”Consider three standard $45 options, so M = 100 and N = 3:
strike cash = $45 × 100 × 3 = $13,500
- Exercising three long Calls pays
$13,500and receives 300 shares. - Assignment on three short Puts also pays
$13,500and receives 300 shares. - Exercising three long Puts delivers 300 shares and receives
$13,500. - Assignment on three short Calls delivers 300 shares and receives
$13,500.
If a short-Call account owns no shares, delivery can create a short 300-share position, subject to broker permission and borrow availability. If a long-Put holder owns only 100 shares, exercising all three Puts can sell those 100 and create another 200 shares short. A broker may reject an instruction or liquidate based on account rules, but the most favorable response is not guaranteed.
Suppose the stock is $38 when three $45 short Puts are assigned. The 300 shares have a market value of $11,400, versus $13,500 paid at strike, an immediate difference of −$2,100 before premium, fees, and subsequent movement. Premium received belongs in total P/L, but it does not reduce the contractual $13,500 strike payment.
Before holding through exercise or expiration
Section titled “Before holding through exercise or expiration”- Verify symbol, Call/Put, side, quantity, strike, multiplier, exact deliverable, exercise style, and physical versus cash settlement.
- Read current OCC product information and any adjustment memo; never assume every contract delivers 100 ordinary shares.
- Calculate gross shares and strike cash for every leg before calculating the final net position.
- Separate opening and closing premium, strike cash, stock market value, fees, and financing in the ledger.
- Confirm exercise, do-not-exercise, order, and broker liquidation cutoffs; public deadlines may not be customer deadlines.
- Check buying power, settled cash, concentration limits, short-stock permission, and borrow availability under each single-leg outcome.
- Track remaining extrinsic value and dividend economics before voluntarily exercising; selling the option can preserve value that exercise discards.
- Treat every spread leg as a separate contract. Assignment of a short leg does not automatically exercise or sell a long leg.
- Stress a price move after the option’s final trade and before the resulting stock can be managed.
- Verify closing-order fills and cancellation status; an open order does not eliminate assignment risk.
- Reconcile exercise, assignment, shares, cash, tax lots, fees, and residual option positions after processing.
- Contact the broker before deadlines when account capacity or an instruction is uncertain.
Common misconceptions
Section titled “Common misconceptions”“The broker automatically converts every spread to its net payoff.” Each leg has a separate exercise or assignment path and can create gross delivery and funding needs.
“Premium received pays the assignment purchase automatically.” Premium affects economics, but the account must still support the full contractual strike cash.
“Physical settlement always means exactly 100 shares.” Standard equity contracts ordinarily use 100 shares; adjusted contracts can have different deliverables.